St. Francois County, MO — Planting Guide
June to-do list for St. Francois County, Missouri
Here's what deserves your attention in St. Francois County, Missouri this month. Everything below is tailored to Zone 6b and timed around your local frost dates.
-
Indoor seed-starting week for basil, peppers, and pole beans
Label every cell. You will absolutely forget which is which otherwise.
-
It's harvest week for basil, carrots, and cucumber
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
July will be here before you know it — start on
- First harvests: basil, carrots, and cucumber
St. Francois County is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 21, giving you a growing season of approximately 188 days.
At an elevation of 808 ft, St. Francois County receives approximately 41 in of rainfall annually. Summer highs average 91°F with winter lows around 23°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 30 days year to year — ranging from March 30 in warm years to April 29 in cold years. St. Francois County scores 67/100 (Good) on the Microclimate Index.
🌡️ Zone
6b (-5°F to 0°F min)
❄️ Last Frost
April 16
🍂 First Frost
October 21
📅 Growing Season
188 days
⛰️ Elevation
808 ft
🌧️ Annual Rainfall
41 in
Monthly Watering Calendar for St. Francois County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why it matters: A drip irrigation system pays for itself in 1-2 seasons in any climate. St. Francois County's 41" annual rainfall determines whether you'll run it weekly (dry zones) or maybe just during summer dry spells (wet zones).
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.5 in | 8 days | — | None |
| Feb | 1.8 in | 7 days | — | None |
| Mar | 2.7 in | 9 days | 1.6 in | High |
| Apr | 4.3 in | 9 days | — | Low |
| May | 5.4 in | 11 days | — | Low |
| Jun | 5 in | 10 days | — | Low |
| Jul | 4.2 in | 9 days | 0.1 in | Low |
| Aug | 4.6 in | 9 days | — | Low |
| Sep | 3.1 in | 7 days | 1.2 in | Moderate |
| Oct | 3.6 in | 8 days | 0.7 in | Moderate |
| Nov | 2.9 in | 9 days | — | None |
| Dec | 2 in | 8 days | — | None |
Annual total: 41.1 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
St. Francois County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-7
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Apr 29 | Nov 5 | 190 days |
| Cautious | Apr 22 | Oct 28 | 189 days |
| Average year | Apr 16 | Oct 21 | 188 days |
| Optimistic | Apr 8 | Oct 13 | 188 days |
| Aggressive (risky) | Mar 30 | Oct 4 | 188 days |
Not very — frost dates can vary by ±30 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Gardening Difficulty Score
St. Francois County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in St. Francois County
Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to St. Francois County's climate and soil.
County Extension Office
St. Francois County University of Missouri Extension Extension Office
Phone: 573-882-7554
Visit Extension Office Website →
Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.
Master Gardener Program
Free gardening help from trained volunteers
Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.
Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.
Soil Testing
Available through your extension office
Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.
Services Available in St. Francois County
Finding local nurseries & garden centers in St. Francois County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to St. Francois County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.
How to Find Them
Search for "nurseries near St. Francois County MO" or "garden center St. Francois County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.
Community gardens & gardening groups
Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden St. Francois County MO" or check your extension office and local parks department. Facebook groups like "St. Francois County Gardeners" or "Missouri Gardening" are also excellent for local advice and plant swaps.
What to Plant After Your Harvest
After your first crops finish, use the remaining frost-free days to grow a second round.
Show 6 more succession options
Sunlight & Day Length in St. Francois County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
For new gardeners: Onion varieties are sold by "short-day," "intermediate-day," and "long-day." St. Francois County's latitude determines which to buy — and getting it wrong is the difference between baseball-sized bulbs and marbles.
Longest Day
14.6 hours
Summer solstice daylight
Shortest Day
9.4 hours
Winter solstice daylight
Peak Sun Hours
9.6 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.7 hr | 3.7 hr | Short day |
| February | 10.6 hr | 4.8 hr | Short day |
| March | 11.7 hr | 5.6 hr | Short day |
| April | 13 hr | 6.8 hr | Neutral |
| May | 14 hr | 8 hr | Long day |
| June | 14.6 hr | 9.3 hr | Long day |
| July | 14.4 hr | 9.6 hr | Long day |
| August | 13.5 hr | 8.1 hr | Neutral |
| September | 12.2 hr | 7.4 hr | Neutral |
| October | 11 hr | 5.8 hr | Short day |
| November | 9.9 hr | 3.9 hr | Short day |
| December | 9.4 hr | 3.6 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in St. Francois County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why it matters: Soil heats slower than air in spring and cools slower in fall. That's why "warm" April air doesn't mean "plant tomatoes" — soil still trails by weeks. St. Francois County's monthly soil curve makes the lag visible.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from May through Oct.
Best Month to Compost
May
Microbial activity peaks when soil is warm.
Active Composting
7 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 30°F | 40°F | ❄️ Dormant | ~36 weeks |
| Feb | 32°F | 38°F | ❄️ Dormant | ~36 weeks |
| Mar | 39°F | 44°F | ❄️ Dormant | ~36 weeks |
| Apr | 53°F | 50°F | ♻️ Active | ~14 weeks |
| May | 65°F | 61°F | 🔥 Peak | ~8 weeks |
| Jun | 74°F | 69°F | 🔥 Peak | ~8 weeks |
| Jul | 81°F | 77°F | 🔥 Peak | ~8 weeks |
| Aug | 84°F | 79°F | 🔥 Peak | ~8 weeks |
| Sep | 74°F | 74°F | 🔥 Peak | ~8 weeks |
| Oct | 65°F | 67°F | 🔥 Peak | ~8 weeks |
| Nov | 50°F | 57°F | 🐢 Slow | ~24 weeks |
| Dec | 36°F | 46°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in St. Francois County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
What this means for you: Pest pressure is a function of climate, not effort. St. Francois County's baseline tells you how much vigilance is normal. A bad pest year in low-pressure region = a normal year in high-pressure region.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Moderate — watch for mildew and blight during wet periods.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Moderate | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
Organic pest management tips
- Use row covers on susceptible crops during peak pest months
- Apply neem oil preventatively every 7-14 days during active pest season
- Interplant with strong-scented herbs (basil, marigold) to confuse pests
- Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
- Practice crop rotation — never plant the same family in the same spot within 3 years
Cover Crops for St. Francois County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Why this matters: Cover crops are the experienced gardener's secret weapon. St. Francois County's climate determines which species thrive: clover and vetch in mild winters, cereal rye and Austrian peas in cold ones.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 17 | Aug 12 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Apr 26 | Aug 26 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 16 | Aug 12 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | May 3 | Oct 7 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 12 | Mar 26 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 10 | Mar 26 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 2 | Apr 2 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 2 | Apr 2 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 24 | Mar 26 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 16 | Mar 26 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 12 | Mar 26 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in St. Francois County
Why this matters: Wind dries soil, knocks over young transplants, and disrupts pollination for bees and butterflies. St. Francois County averages 9.6 mph — above 10 mph means windbreaks (shrubs, fences, taller crops to windward), staked tomatoes from day one, and an extra round of watering during dry windy spells. Lower wind = lower water bills and fewer broken stems.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 11 mph Summer: 10 mph
Fall: 10 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.9/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (261 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in St. Francois County
How much water you can collect, when to collect it, and what size system you need for your garden.
What this means for you: Rainwater scales linearly with roof area. A 2,000 sq ft roof in St. Francois County captures ~1,200 gallons per 1" of rain — given 41" annual rainfall, that's thousands of gallons a year if you have storage to hold it.
Annual Collection
20,484 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 1,500 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Apr, May, Jun, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jan, Feb, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 41.1 inches of rain per year
- A 1,000 sq ft roof can collect roughly 20,484 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Jan, Feb, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in St. Francois County
Soil Type
Silt Loam
Soil pH 5.3–7 · Somewhat Poorly Drained drainage
Good candidate for raised beds to maximise drainage and extend the season.
Watering Needs
Drought stress: 5.5/10
Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.
Season Tips
188-day frost-free season
Plenty of time for warm-season crops. Start heat-lovers indoors 6–8 weeks before last frost to maximise your harvest window.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in St. Francois County
107 vegetables that grow well in Zone 6b with planting dates for St. Francois County.
Show all 107 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 12 | Apr 23 | Apr 30 | — | Jul 23 – Aug 27 | 80–100 |
| Amaranth | Feb 19 | Apr 23 | Apr 30 | — | Jul 30 – Sep 17 | 90–120 |
| Arugula | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jul 23 | 30–50 |
| Asparagus | — | — | Apr 30 | — | — | 730–1095 |
| Beets | — | Apr 2 | — | Aug 12 | May 28 – Jun 25 | 50–70 |
| Belgian Endive | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Aug 6 – Oct 1 | 110–150 |
| Bitter Melon | Feb 19 | Apr 23 | Apr 30 | — | Jul 2 – Aug 13 | 60–90 |
| Black Beans | — | Apr 23 | — | — | Jul 23 – Sep 10 | 90–120 |
| Bok Choy | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jul 2 | 40–60 |
| Broccoli | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 18 – Jul 30 | 60–90 |
| Broccoli Rabe | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jul 2 | 40–60 |
| Brussels Sprouts | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 16 – Sep 10 | 90–130 |
| Butternut Squash | Mar 12 | Apr 23 | Apr 30 | — | Jul 30 – Sep 3 | 85–110 |
| Cabbage | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 18 – Aug 13 | 60–100 |
| Calabash | Feb 19 | Apr 23 | Apr 30 | — | Jul 23 – Sep 17 | 80–120 |
| Carrots | — | Apr 2 | — | Aug 12 | Jun 4 – Jul 9 | 60–80 |
| Cauliflower | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Aug 13 | 55–100 |
| Celeriac | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 30 – Sep 3 | 100–120 |
| Celery | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 9 – Sep 3 | 80–120 |
| Celtuce | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 18 – Jul 30 | 60–90 |
| Chard | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Jul 30 | 50–60 |
| Chickpeas | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 9 – Aug 20 | 80–110 |
| Chicory | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 18 – Jul 30 | 60–85 |
| Chinese Cabbage | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Jul 9 | 50–70 |
| Christmas Lima Beans | Feb 19 | Apr 23 | Apr 30 | — | Jul 23 – Aug 27 | 80–100 |
| Collard Greens | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Aug 13 | 55–75 |
| Corn | — | Apr 23 | — | — | Jun 25 – Aug 20 | 60–100 |
| Cowpeas | — | Apr 23 | — | — | Jun 25 – Aug 6 | 60–90 |
| Cress | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Apr 30 – May 21 | 14–21 |
| Crookneck Squash | Mar 12 | Apr 23 | Apr 30 | — | Jun 18 – Jul 16 | 45–60 |
| Crosne | — | Apr 2 | — | Aug 12 | Sep 3 – Oct 15 | 150–200 |
| Cucumber | Mar 12 | Apr 23 | Apr 30 | — | Jun 25 – Aug 20 | 50–70 |
| Daikon | — | Apr 2 | — | Aug 12 | May 28 – Jun 25 | 50–70 |
| Delicata Squash | Mar 12 | Apr 23 | Apr 30 | — | Jul 23 – Aug 27 | 80–100 |
| Edamame | — | Apr 23 | — | — | Jul 9 – Aug 20 | 75–100 |
| Eggplant | Feb 5 | Apr 23 | Apr 30 | — | Jul 9 – Sep 10 | 65–85 |
| Endive | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 4 – Jul 9 | 45–65 |
| Escarole | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Jul 9 | 50–70 |
| Fava Beans | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 2 – Aug 13 | 75–100 |
| Fennel | Feb 19 | Apr 23 | Apr 30 | — | Jul 2 – Aug 13 | 60–90 |
| Garlic | — | — | — | Sep 9 | Dec 9 – Mar 24 | 90–240 |
| Green Beans | — | Apr 23 | — | — | Jun 18 – Aug 13 | 50–65 |
| Horseradish | — | — | Apr 30 | — | Sep 3 – Nov 12 | 120–180 |
| Hot Peppers | Feb 5 | Apr 23 | Apr 30 | — | Jul 9 – Oct 15 | 70–120 |
| Hubbard Squash | Mar 12 | Apr 23 | Apr 30 | — | Aug 13 – Sep 17 | 100–120 |
| Kabocha | Mar 12 | Apr 23 | Apr 30 | — | Jul 30 – Aug 27 | 85–100 |
| Kai Lan | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 4 – Jul 2 | 45–60 |
| Kale | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Aug 6 | 50–70 |
| Kidney Beans | — | Apr 23 | — | — | Jul 23 – Aug 27 | 85–110 |
| Kohlrabi | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 4 – Jul 9 | 45–65 |
| Komatsuna | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jun 25 | 35–50 |
| Leeks | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 16 – Oct 1 | 90–150 |
| Lentils | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 9 – Aug 20 | 80–110 |
| Lettuce | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jul 30 | 30–60 |
| Lima Beans | — | Apr 23 | — | — | Jun 25 – Aug 6 | 60–90 |
| Loofah | Feb 19 | Apr 23 | Apr 30 | — | Aug 13 – Oct 15 | 100–150 |
| Luffa | Feb 19 | Apr 23 | Apr 30 | — | Jul 30 – Oct 15 | 90–150 |
| Mache | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jul 2 | 40–60 |
| Melon | Mar 12 | Apr 23 | Apr 30 | — | Jul 9 – Aug 27 | 70–100 |
| Microgreens | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Apr 23 – May 21 | 7–21 |
| Mitsuba | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jun 4 – Jul 30 | 50–70 |
| Mizuna | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jun 18 | 30–45 |
| Mustard Greens | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jul 23 | 30–50 |
| Napa Cabbage | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Jul 16 | 55–75 |
| New Zealand Spinach | Feb 19 | Apr 23 | Apr 30 | — | Jun 25 – Jul 23 | 55–70 |
| Okra | Feb 19 | Apr 23 | Apr 30 | — | Jun 25 – Aug 20 | 50–65 |
| Onion | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 16 – Sep 3 | 90–120 |
| Pac Choi | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jun 25 | 40–55 |
| Parsnip | — | Apr 2 | — | Aug 12 | Jul 16 – Aug 27 | 100–130 |
| Patty Pan Squash | Mar 12 | Apr 23 | Apr 30 | — | Jun 18 – Jul 16 | 45–60 |
| Peas | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Aug 6 | 55–70 |
| Peppers | Feb 5 | Apr 23 | Apr 30 | — | Jul 2 – Sep 10 | 60–90 |
| Pole Beans | Feb 19 | Apr 23 | Apr 30 | — | Jun 25 – Aug 20 | 55–70 |
| Potatoes | Feb 19 | Apr 23 | Apr 30 | — | Jul 9 – Sep 17 | 70–120 |
| Pumpkin | Mar 12 | Apr 23 | Apr 30 | — | Jul 30 – Sep 17 | 85–120 |
| Purslane | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jul 2 | 40–60 |
| Radicchio | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 18 – Jul 23 | 60–80 |
| Radish | — | Apr 2 | — | Aug 12 | Apr 30 – May 21 | 22–35 |
| Rhubarb | — | — | May 7 | — | — | 365–730 |
| Romanesco | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 2 – Aug 13 | 75–100 |
| Rutabaga | — | Apr 2 | — | Aug 12 | Jun 25 – Jul 30 | 80–100 |
| Salsify | — | Apr 2 | — | Aug 12 | Jul 16 – Aug 27 | 100–130 |
| Savoy Cabbage | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 25 – Aug 20 | 70–110 |
| Scallions | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Jul 9 | 50–70 |
| Scarlet Runner Beans | Feb 19 | Apr 23 | Apr 30 | — | Jul 2 – Aug 6 | 60–80 |
| Shallot | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jul 16 – Sep 3 | 90–120 |
| Shiso | Feb 26 | Apr 23 | Apr 30 | — | Jun 25 – Aug 20 | 50–70 |
| Snap Peas | Feb 19 | Apr 23 | Apr 30 | — | Jun 25 – Aug 20 | 55–70 |
| Snow Peas | Mar 12 | Apr 2 | Apr 16 | Aug 12 | Jun 11 – Aug 6 | 50–65 |
| Soybeans | — | Apr 23 | — | — | Jul 16 – Sep 10 | 80–120 |
| Spaghetti Squash | Mar 12 | Apr 23 | Apr 30 | — | Jul 30 – Aug 27 | 85–100 |
| Spinach | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jul 23 | 35–50 |
| Squash (Summer) | Mar 12 | Apr 23 | Apr 30 | — | Jun 18 – Aug 20 | 45–65 |
| Squash (Winter) | Mar 12 | Apr 23 | Apr 30 | — | Jul 23 – Sep 17 | 80–120 |
| Sunchoke | — | — | Apr 30 | — | Aug 20 – Oct 15 | 110–150 |
| Sweet Corn | — | Apr 23 | — | — | Jun 25 – Aug 6 | 60–90 |
| Sweet Potatoes | Feb 19 | Apr 23 | Apr 30 | — | Jul 30 – Sep 17 | 90–120 |
| Tatsoi | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 21 – Jun 25 | 35–50 |
| Tomatillo | Feb 19 | Apr 23 | Apr 30 | — | Jul 2 – Sep 10 | 60–85 |
| Tomatoes | Feb 19 | Apr 23 | Apr 30 | — | Jul 2 – Sep 10 | 60–85 |
| Turnip | — | Apr 2 | — | Aug 12 | May 14 – Jun 18 | 40–60 |
| Watercress | Mar 12 | Apr 2 | Apr 16 | Aug 12 | May 28 – Jul 2 | 40–60 |
| Watermelon | Mar 12 | Apr 23 | Apr 30 | — | Jul 9 – Aug 27 | 70–100 |
| Wax Beans | — | Apr 23 | — | — | Jun 18 – Aug 13 | 50–65 |
| Winter Melon | Feb 19 | Apr 23 | Apr 30 | — | Jul 30 – Sep 17 | 90–120 |
| Yard Long Beans | Feb 19 | Apr 23 | Apr 30 | — | Jun 25 – Aug 6 | 55–80 |
| Zucchini | Mar 12 | Apr 23 | Apr 30 | — | Jun 18 – Aug 13 | 45–60 |
🍓 Fruits to Grow in St. Francois County
27 fruits that grow well in Zone 6b with planting dates for St. Francois County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 7 | — | Aug 6 – Nov 19 | 90–180 |
| Aronia | — | — | May 7 | — | — | 730–1095 |
| Blackberries | — | — | May 7 | — | — | 365–730 |
| Blueberries | — | — | May 7 | — | — | 730–1095 |
| Boysenberries | — | — | May 7 | — | — | 365–730 |
| Cantaloupe | — | — | May 7 | — | Jul 16 – Aug 20 | 70–90 |
| Che Fruit | — | — | May 7 | — | — | 1095–1825 |
| Cranberries | — | — | May 7 | — | — | 730–1095 |
| Currants | — | — | May 7 | — | — | 730–1095 |
| Elderberries | — | — | May 7 | — | — | 730–1095 |
| Goji Berries | — | — | May 7 | — | — | 730–1095 |
| Gooseberries | — | — | May 7 | — | — | 730–1095 |
| Grapes | — | — | May 7 | — | — | 730–1095 |
| Ground Cherry | — | — | May 7 | — | Jul 16 – Sep 10 | 65–80 |
| Hardy Kiwi | — | — | May 7 | — | — | 1095–1825 |
| Haskaps | — | — | May 7 | — | — | 730–1095 |
| Honeydew | — | — | May 7 | — | Jul 30 – Sep 10 | 80–110 |
| Jostaberry | — | — | May 7 | — | — | 730–1095 |
| Lingonberries | — | — | May 7 | — | — | 730–1095 |
| Medlar | — | — | May 7 | — | — | 1095–1825 |
| Mulberries | — | — | May 7 | — | — | 730–1825 |
| Pawpaw | — | — | May 7 | — | — | 1095–2555 |
| Persimmon | — | — | May 7 | — | — | 1095–2555 |
| Quince | — | — | May 7 | — | — | 1095–1825 |
| Raspberries | — | — | May 7 | — | — | 365–730 |
| Serviceberries | — | — | May 7 | — | — | 730–1095 |
| Strawberries | — | — | May 7 | — | Aug 6 – Nov 19 | 90–365 |
🌿 Herbs to Grow in St. Francois County
35 herbs that grow well in Zone 6b with planting dates for St. Francois County.
Show all 35 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 12 | Apr 2 | Apr 9 | Aug 12 | — | 365–730 |
| Anise | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jul 9 – Sep 24 | 90–120 |
| Basil | Feb 26 | Apr 23 | Apr 30 | — | Jun 25 – Aug 27 | 50–75 |
| Bee Balm | — | — | Apr 23 | — | Jul 23 – Oct 8 | 90–120 |
| Borage | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jun 4 – Jul 23 | 50–60 |
| Caraway | Mar 12 | Apr 2 | Apr 9 | Aug 12 | — | 365–450 |
| Catnip | — | — | Apr 23 | — | Jun 25 – Aug 27 | 60–80 |
| Chamomile | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jun 11 – Aug 20 | 60–90 |
| Chervil | Mar 12 | Apr 2 | Apr 9 | Aug 12 | May 21 – Jul 23 | 40–60 |
| Chives | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Cilantro | Mar 12 | Apr 2 | Apr 9 | Aug 12 | May 21 – Jul 23 | 40–60 |
| Comfrey | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Cumin | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jul 23 – Sep 24 | 100–120 |
| Dill | Mar 12 | Apr 2 | Apr 9 | Aug 12 | May 21 – Jul 23 | 40–60 |
| Epazote | Feb 26 | Apr 23 | Apr 30 | — | Jun 18 – Aug 13 | 45–60 |
| Fennel (herb) | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jun 11 – Aug 20 | 60–90 |
| Feverfew | — | — | Apr 23 | — | Jul 23 – Oct 8 | 90–120 |
| Garlic Chives | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Horehound | — | — | Apr 23 | — | Jul 9 – Sep 3 | 75–90 |
| Hyssop | — | — | Apr 23 | — | Jul 2 – Sep 3 | 70–90 |
| Lemon Balm | — | — | Apr 23 | — | Jun 25 – Aug 13 | 60–70 |
| Lemon Thyme | — | — | Apr 23 | — | Jul 2 – Sep 3 | 70–90 |
| Lovage | — | — | Apr 23 | — | Jul 2 – Sep 3 | 70–90 |
| Marjoram | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Mint | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Oregano | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Parsley | Mar 12 | Apr 2 | Apr 9 | Aug 12 | Jun 11 – Aug 13 | 60–80 |
| Rue | — | — | Apr 23 | — | Jul 2 – Sep 3 | 70–90 |
| Sage | — | — | Apr 23 | — | Jul 9 – Sep 3 | 75–90 |
| Savory | — | — | Apr 23 | — | Jun 18 – Aug 13 | 50–70 |
| Sorrel | Mar 12 | Apr 2 | Apr 9 | Aug 12 | May 21 – Jul 23 | 40–60 |
| Tarragon | — | — | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Thai Basil | Feb 26 | Apr 23 | Apr 30 | — | Jun 25 – Aug 27 | 50–75 |
| Thyme | — | — | Apr 23 | — | Jul 2 – Sep 3 | 70–90 |
| Valerian | — | — | Apr 23 | — | Aug 27 – Nov 5 | 120–180 |
🌸 Flowers to Grow in St. Francois County
53 flowers that grow well in Zone 6b with planting dates for St. Francois County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 26 | Apr 16 | Apr 16 | — | Jun 11 – Sep 24 | 60–75 |
| Alliums | — | — | — | Sep 9 | Oct 7 – Nov 4 | 28–42 |
| Anemones | Mar 19 | — | Apr 16 | — | May 14 – Jun 11 | 90–120 |
| Astilbe | Feb 12 | — | Apr 23 | — | Jul 2 – Sep 10 | 70–100 |
| Bachelor's Button | Mar 5 | Mar 19 | Apr 16 | Sep 9 | Jun 18 – Sep 10 | 60–90 |
| Begonias | Feb 5 | — | Apr 23 | — | Jul 2 – Oct 8 | 70–90 |
| Black-eyed Susan | Feb 12 | Apr 16 | Apr 23 | — | Jul 9 – Oct 29 | 60–80 |
| Bleeding Hearts | Feb 12 | — | Apr 23 | — | Jun 18 – Jul 23 | 60–90 |
| Calendula | Mar 5 | Mar 19 | Apr 16 | — | Jun 4 – Sep 10 | 50–70 |
| California Poppy | — | Mar 19 | — | — | May 28 – Jul 23 | 60–90 |
| Celosia | Mar 12 | Apr 23 | Apr 23 | — | Jun 25 – Oct 15 | 60–90 |
| Columbine | Feb 12 | Apr 23 | Apr 23 | — | Jun 18 – Jul 23 | 70–100 |
| Coreopsis | Feb 12 | Apr 16 | Apr 23 | — | Jul 2 – Oct 29 | 60–80 |
| Cosmos | Mar 19 | Apr 16 | Apr 16 | — | Jun 25 – Oct 8 | 60–90 |
| Crocus | — | — | — | Sep 9 | Jul 29 – Aug 19 | 10–20 |
| Daffodils | — | — | — | Sep 9 | Aug 5 – Aug 26 | 20–40 |
| Dahlias | Mar 19 | Apr 23 | Apr 23 | — | Jul 9 – Oct 29 | 70–120 |
| Daylily | Feb 12 | — | Apr 23 | — | Jul 9 – Oct 29 | 60–90 |
| Dianthus | Feb 19 | Mar 19 | Mar 26 | — | May 14 – Aug 13 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 12 | Apr 23 | Apr 23 | — | Jul 9 – Oct 29 | 70–90 |
| Foxglove | Feb 12 | Apr 23 | Apr 23 | — | Jun 18 – Jul 23 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 26 | Apr 23 | Apr 23 | — | Jul 2 – Nov 5 | 70–100 |
| Geraniums | Feb 5 | — | Apr 23 | — | Jul 2 – Oct 8 | 70–100 |
| Gladiolus | — | Apr 16 | Apr 16 | — | Jul 2 – Oct 22 | 70–100 |
| Hostas | Feb 5 | — | Apr 23 | — | Jul 9 – Oct 29 | 60–90 |
| Hyacinths | — | — | — | Sep 9 | Aug 26 – Sep 16 | 14–28 |
| Hydrangeas | Feb 5 | — | Apr 23 | — | Jul 2 – Oct 15 | 90–150 |
| Impatiens | Feb 19 | — | Apr 23 | — | Jul 2 – Oct 15 | 60–75 |
| Irises | — | Division | Apr 23 | — | Jun 18 – Jul 16 | 60–100 |
| Larkspur | — | Mar 19 | — | — | May 28 – Jul 23 | 60–90 |
| Lavender | Feb 5 | — | Apr 30 | — | Jul 9 – Sep 3 | 90–120 |
| Lilies | — | Division | Apr 23 | — | Jul 2 – Oct 8 | 70–120 |
| Lobelia | Feb 12 | — | Apr 2 | — | May 28 – Aug 20 | 70–80 |
| Lupine | Feb 12 | Apr 23 | Apr 23 | — | Jun 18 – Jul 23 | 75–100 |
| Marigolds | Mar 5 | Apr 16 | Apr 16 | — | Jun 11 – Sep 17 | 50–70 |
| Nasturtium | Mar 19 | Apr 16 | Apr 16 | — | Jun 11 – Oct 8 | 55–65 |
| Pansy | Feb 5 | — | Apr 16 | Aug 26 | Jun 11 – Aug 20 | 70–90 |
| Peonies | — | Division | Apr 23 | — | Jun 25 – Jul 30 | 90–120 |
| Petunia | Feb 19 | — | Apr 23 | — | Jul 2 – Oct 15 | 70–90 |
| Phlox | Feb 12 | Apr 23 | Apr 23 | — | Jul 2 – Sep 24 | 80–110 |
| Portulaca | Mar 12 | Apr 23 | Apr 23 | — | Jun 11 – Oct 1 | 50–70 |
| Ranunculus | Mar 5 | — | Apr 16 | — | May 21 – Jun 18 | 90–120 |
| Roses | Feb 5 | — | Apr 23 | — | Jul 2 – Oct 29 | 90–180 |
| Salvia | Feb 12 | — | Apr 16 | — | Jun 25 – Oct 8 | 70–90 |
| Sedum (Stonecrop) | Feb 12 | — | Apr 23 | — | Aug 13 – Nov 5 | 60–90 |
| Snapdragon | Feb 5 | Mar 26 | Apr 16 | — | Jun 25 – Sep 10 | 70–100 |
| Sunflower | Mar 26 | Apr 16 | Apr 16 | — | Jul 9 – Oct 8 | 70–100 |
| Sweet Alyssum | Mar 5 | Mar 26 | Apr 16 | — | May 28 – Aug 13 | 45–60 |
| Sweet Pea | Mar 5 | Mar 12 | Apr 16 | — | Jul 2 – Sep 10 | 65–85 |
| Tulips | — | — | — | Sep 16 | Aug 26 – Sep 23 | 15–30 |
| Vinca (Annual) | Feb 5 | — | Apr 23 | — | Jul 2 – Oct 15 | 70–90 |
| Yarrow | Feb 12 | Apr 16 | Apr 23 | — | Jul 2 – Oct 29 | 60–90 |
| Zinnia | Mar 19 | Apr 16 | Apr 16 | — | Jun 25 – Oct 1 | 60–70 |
Monthly Planting Guide for St. Francois County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in St. Francois County.
Frequently Asked Questions
What planting zone is St. Francois County, MO?
St. Francois County is in USDA Hardiness Zone 6b. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in St. Francois County, MO?
Based on 31 years of NOAA weather station data, the median last spring frost in St. Francois County falls around April 16. In 8 out of 10 years, last frost lands between March 30 and April 29 — a 30-day window of variability. Use April 29 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in St. Francois County, MO?
The median first fall frost in St. Francois County arrives around October 21. In cold years it can arrive as early as October 4; in mild years as late as November 5. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in St. Francois County?
St. Francois County has a frost-free growing season of approximately 188 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing.
What is the soil like in St. Francois County for gardening?
St. Francois County has predominantly Silt Loam soil with a pH range of 5.3–7 and Somewhat Poorly Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in St. Francois County?
St. Francois County has commercial agriculture that includes Soybeans, Corn, Cattle, Hay. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is St. Francois County a good location for home gardening?
St. Francois County scores 67/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Your St. Francois County Garden Planner — Free
A 22-page printable planner built for St. Francois County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log