Linn County, KS — Planting Guide
June to-do list for Linn County, Kansas
Here's what deserves your attention in Linn County, Kansas this month. Everything below is tailored to Zone 6b and timed around your local frost dates.
-
Indoor seed-starting week for peppers, pole beans, and tomatoes
A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.
-
Bring in the basil, carrots, and cucumber
If you can't use it all right away, check the food-preservation section of your planner.
Before July arrives, get these ready
- First harvests: basil, carrots, and cucumber
Linn County is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 25, giving you a growing season of approximately 199 days.
At an elevation of 434 ft, Linn County receives approximately 33 in of rainfall annually. Summer highs average 86°F with winter lows around 20°F. The predominant soil type is Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 27 days year to year — ranging from March 26 in warm years to April 22 in cold years. The growing season is trending shorter by about 1.56 days per decade. Linn County scores 64/100 (Good) on the Microclimate Index.
🌡️ Zone
6b (-5°F to 0°F min)
❄️ Last Frost
April 9
🍂 First Frost
October 25
📅 Growing Season
199 days
⛰️ Elevation
434 ft
🌧️ Annual Rainfall
33 in
Monthly Watering Calendar for Linn 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: Mulch reduces watering needs 30-50% by cutting evaporation. Linn County's 33" annual rainfall might be enough for vegetables in some months and not in others — a 2-3" mulch layer evens the swing.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 0.9 in | 3 days | — | None |
| Feb | 1.2 in | 4 days | — | None |
| Mar | 1.8 in | 5 days | 2.5 in | High |
| Apr | 3.5 in | 8 days | 0.8 in | Moderate |
| May | 5.4 in | 8 days | — | Low |
| Jun | 4.6 in | 9 days | — | Low |
| Jul | 4.2 in | 9 days | 0.1 in | Low |
| Aug | 4.5 in | 7 days | — | Low |
| Sep | 2.6 in | 5 days | 1.7 in | High |
| Oct | 2.3 in | 4 days | 2 in | High |
| Nov | 1.1 in | 3 days | — | None |
| Dec | 0.9 in | 3 days | — | None |
Annual total: 33 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.
Linn County Soil Profile
Soil Type
Loam
Soil pH
6.6-7.2
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 22 | Nov 5 | 197 days |
| Cautious | Apr 15 | Oct 27 | 195 days |
| Average year | Apr 9 | Oct 25 | 199 days |
| Optimistic | Apr 4 | Oct 17 | 196 days |
| Aggressive (risky) | Mar 26 | Oct 9 | 197 days |
Not very — frost dates can vary by ±27 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Yes — growing seasons are getting shorter here (about 1.6 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Linn County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Linn 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 Linn County's climate and soil.
County Extension Office
Linn County Kansas State University Extension Extension Office
Phone: 785-532-5820
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 Linn County
Finding local nurseries & garden centers in Linn County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Linn 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 Linn County KS" or "garden center Linn 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 Linn County KS" or check your extension office and local parks department. Facebook groups like "Linn County Gardeners" or "Kansas 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 Linn County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
For new gardeners: Lettuce and cilantro "bolt" (go to seed) when days lengthen. Knowing your day-length curve helps you time spring plantings to harvest before the bolting trigger hits. Linn County's daylight ranges shape the planting calendar.
Longest Day
14.6 hours
Summer solstice daylight
Shortest Day
9.4 hours
Winter solstice daylight
Peak Sun Hours
10.4 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 | 9.6 hr | 5.4 hr | Short day |
| February | 10.6 hr | 5.9 hr | Short day |
| March | 11.7 hr | 7.2 hr | Short day |
| April | 13 hr | 8 hr | Neutral |
| May | 14.1 hr | 8.4 hr | Long day |
| June | 14.6 hr | 9.7 hr | Long day |
| July | 14.4 hr | 10.4 hr | Long day |
| August | 13.5 hr | 9.5 hr | Neutral |
| September | 12.2 hr | 8.6 hr | Neutral |
| October | 11 hr | 6.9 hr | Short day |
| November | 9.9 hr | 5.5 hr | Short day |
| December | 9.4 hr | 5.2 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Linn County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
The practical takeaway: Watching soil temperature (not air) is the single biggest upgrade most new gardeners can make. Linn County's typical curve helps you plan — but a $5 soil thermometer in the bed beats any average.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from May through Oct.
Best Month to Compost
Jun
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 | 32°F | 38°F | ❄️ Dormant | ~36 weeks |
| Feb | 33°F | 38°F | ❄️ Dormant | ~36 weeks |
| Mar | 38°F | 42°F | ❄️ Dormant | ~36 weeks |
| Apr | 52°F | 51°F | ♻️ Active | ~14 weeks |
| May | 65°F | 59°F | ♻️ Active | ~14 weeks |
| Jun | 72°F | 69°F | 🔥 Peak | ~8 weeks |
| Jul | 81°F | 77°F | 🔥 Peak | ~8 weeks |
| Aug | 85°F | 80°F | 🔥 Peak | ~8 weeks |
| Sep | 74°F | 73°F | 🔥 Peak | ~8 weeks |
| Oct | 65°F | 66°F | ♻️ Active | ~14 weeks |
| Nov | 49°F | 54°F | 🐢 Slow | ~24 weeks |
| Dec | 39°F | 45°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 Linn County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why it matters: Pollinators are the good bugs. Pest pressure is the bad bugs. Linn County's climate makes both more abundant in warm humid regions, and rarer in cold dry ones — plan habitat to encourage the good while managing the bad.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Moderate | May, Jun, Jul |
| Stink bugs | Moderate | 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 Linn 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 protect microbial life through winter and summer. Bare soil bakes; covered soil stays cooler, moister, and biologically active. The difference shows up in next year's crops.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 15 | Aug 30 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Apr 19 | Aug 23 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 9 | Aug 16 | ✓ 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 | Apr 25 | Sep 27 | — | 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 27 | Mar 19 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 18 | Mar 26 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 8 | Mar 19 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 2 | Mar 26 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 19 | Mar 26 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 22 | Mar 26 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 27 | Mar 26 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Linn County
The practical takeaway: Why care about wind? Above about 10 mph, evaporation jumps and pollinators struggle to land on flowers. Linn County's 11.3 mph average means you can plant tall crops without much support, but it doesn't mean ignore wind — a 20+ mph storm still snaps unstaked tomatoes.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 16 mph Summer: 11 mph
Fall: 14 mph Winter: 15 mph
Prevailing wind: S. Windy area — plant a windbreak hedge on the S side of your garden.
Windbreak Benefit
8.6/10
Strongly recommended — a windbreak (fence, hedge, or row of tall crops like corn or sunflowers) will significantly improve garden yields.
Frost Pocket Risk
Low
Relatively flat terrain (188 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Linn County
How much water you can collect, when to collect it, and what size system you need for your garden.
For new gardeners: Rainwater scales linearly with roof area. A 2,000 sq ft roof in Linn County captures ~1,200 gallons per 1" of rain — given 33" annual rainfall, that's thousands of gallons a year if you have storage to hold it.
Annual Collection
16,447 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 2,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
May, Jun, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jan, 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 33.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 16,447 gallons annually
- Rainwater harvesting is fully legal in your state
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Linn County
Soil Type
Loam
Soil pH 6.6–7.2 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
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
199-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 Linn County
107 vegetables that grow well in Zone 6b with planting dates for Linn County.
Show all 107 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 5 | Apr 16 | Apr 23 | — | Jul 16 – Aug 20 | 80–100 |
| Amaranth | Feb 12 | Apr 16 | Apr 23 | — | Jul 23 – Sep 10 | 90–120 |
| Arugula | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jul 16 | 30–50 |
| Asparagus | — | — | Apr 23 | — | — | 730–1095 |
| Beets | — | Mar 26 | — | Aug 16 | May 21 – Jun 18 | 50–70 |
| Belgian Endive | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 30 – Sep 24 | 110–150 |
| Bitter Melon | Feb 12 | Apr 16 | Apr 23 | — | Jun 25 – Aug 6 | 60–90 |
| Black Beans | — | Apr 16 | — | — | Jul 16 – Sep 3 | 90–120 |
| Bok Choy | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 25 | 40–60 |
| Broccoli | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 11 – Jul 23 | 60–90 |
| Broccoli Rabe | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 25 | 40–60 |
| Brussels Sprouts | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 9 – Sep 3 | 90–130 |
| Butternut Squash | Mar 5 | Apr 16 | Apr 23 | — | Jul 23 – Aug 27 | 85–110 |
| Cabbage | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 11 – Aug 6 | 60–100 |
| Calabash | Feb 12 | Apr 16 | Apr 23 | — | Jul 16 – Sep 10 | 80–120 |
| Carrots | — | Mar 26 | — | Aug 16 | May 28 – Jul 2 | 60–80 |
| Cauliflower | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Aug 6 | 55–100 |
| Celeriac | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 23 – Aug 27 | 100–120 |
| Celery | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 2 – Aug 27 | 80–120 |
| Celtuce | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 11 – Jul 23 | 60–90 |
| Chard | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 23 | 50–60 |
| Chickpeas | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 2 – Aug 13 | 80–110 |
| Chicory | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 11 – Jul 23 | 60–85 |
| Chinese Cabbage | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 2 | 50–70 |
| Christmas Lima Beans | Feb 12 | Apr 16 | Apr 23 | — | Jul 16 – Aug 20 | 80–100 |
| Collard Greens | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Aug 6 | 55–75 |
| Corn | — | Apr 16 | — | — | Jun 18 – Aug 13 | 60–100 |
| Cowpeas | — | Apr 16 | — | — | Jun 18 – Jul 30 | 60–90 |
| Cress | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Apr 23 – May 14 | 14–21 |
| Crookneck Squash | Mar 5 | Apr 16 | Apr 23 | — | Jun 11 – Jul 9 | 45–60 |
| Crosne | — | Mar 26 | — | Aug 16 | Aug 27 – Oct 8 | 150–200 |
| Cucumber | Mar 5 | Apr 16 | Apr 23 | — | Jun 18 – Aug 13 | 50–70 |
| Daikon | — | Mar 26 | — | Aug 16 | May 21 – Jun 18 | 50–70 |
| Delicata Squash | Mar 5 | Apr 16 | Apr 23 | — | Jul 16 – Aug 20 | 80–100 |
| Edamame | — | Apr 16 | — | — | Jul 2 – Aug 13 | 75–100 |
| Eggplant | Jan 29 | Apr 16 | Apr 23 | — | Jul 2 – Sep 3 | 65–85 |
| Endive | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 28 – Jul 2 | 45–65 |
| Escarole | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 2 | 50–70 |
| Fava Beans | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 25 – Aug 6 | 75–100 |
| Fennel | Feb 12 | Apr 16 | Apr 23 | — | Jun 25 – Aug 6 | 60–90 |
| Garlic | — | — | — | Sep 13 | Dec 13 – Mar 28 | 90–240 |
| Green Beans | — | Apr 16 | — | — | Jun 11 – Aug 6 | 50–65 |
| Horseradish | — | — | Apr 23 | — | Aug 27 – Nov 5 | 120–180 |
| Hot Peppers | Jan 29 | Apr 16 | Apr 23 | — | Jul 2 – Oct 8 | 70–120 |
| Hubbard Squash | Mar 5 | Apr 16 | Apr 23 | — | Aug 6 – Sep 10 | 100–120 |
| Kabocha | Mar 5 | Apr 16 | Apr 23 | — | Jul 23 – Aug 20 | 85–100 |
| Kai Lan | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 28 – Jun 25 | 45–60 |
| Kale | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 30 | 50–70 |
| Kidney Beans | — | Apr 16 | — | — | Jul 16 – Aug 20 | 85–110 |
| Kohlrabi | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 28 – Jul 2 | 45–65 |
| Komatsuna | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jun 18 | 35–50 |
| Leeks | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 9 – Sep 24 | 90–150 |
| Lentils | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 2 – Aug 13 | 80–110 |
| Lettuce | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jul 23 | 30–60 |
| Lima Beans | — | Apr 16 | — | — | Jun 18 – Jul 30 | 60–90 |
| Loofah | Feb 12 | Apr 16 | Apr 23 | — | Aug 6 – Oct 8 | 100–150 |
| Luffa | Feb 12 | Apr 16 | Apr 23 | — | Jul 23 – Oct 8 | 90–150 |
| Mache | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 25 | 40–60 |
| Melon | Mar 5 | Apr 16 | Apr 23 | — | Jul 2 – Aug 20 | 70–100 |
| Microgreens | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Apr 16 – May 14 | 7–21 |
| Mitsuba | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 28 – Jul 23 | 50–70 |
| Mizuna | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jun 11 | 30–45 |
| Mustard Greens | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jul 16 | 30–50 |
| Napa Cabbage | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 9 | 55–75 |
| New Zealand Spinach | Feb 12 | Apr 16 | Apr 23 | — | Jun 18 – Jul 16 | 55–70 |
| Okra | Feb 12 | Apr 16 | Apr 23 | — | Jun 18 – Aug 13 | 50–65 |
| Onion | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 9 – Aug 27 | 90–120 |
| Pac Choi | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 18 | 40–55 |
| Parsnip | — | Mar 26 | — | Aug 16 | Jul 9 – Aug 20 | 100–130 |
| Patty Pan Squash | Mar 5 | Apr 16 | Apr 23 | — | Jun 11 – Jul 9 | 45–60 |
| Peas | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 30 | 55–70 |
| Peppers | Jan 29 | Apr 16 | Apr 23 | — | Jun 25 – Sep 3 | 60–90 |
| Pole Beans | Feb 12 | Apr 16 | Apr 23 | — | Jun 18 – Aug 13 | 55–70 |
| Potatoes | Feb 12 | Apr 16 | Apr 23 | — | Jul 2 – Sep 10 | 70–120 |
| Pumpkin | Mar 5 | Apr 16 | Apr 23 | — | Jul 23 – Sep 10 | 85–120 |
| Purslane | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 25 | 40–60 |
| Radicchio | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 11 – Jul 16 | 60–80 |
| Radish | — | Mar 26 | — | Aug 16 | Apr 23 – May 14 | 22–35 |
| Rhubarb | — | — | Apr 30 | — | — | 365–730 |
| Romanesco | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 25 – Aug 6 | 75–100 |
| Rutabaga | — | Mar 26 | — | Aug 16 | Jun 18 – Jul 23 | 80–100 |
| Salsify | — | Mar 26 | — | Aug 16 | Jul 9 – Aug 20 | 100–130 |
| Savoy Cabbage | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 18 – Aug 13 | 70–110 |
| Scallions | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 2 | 50–70 |
| Scarlet Runner Beans | Feb 12 | Apr 16 | Apr 23 | — | Jun 25 – Jul 30 | 60–80 |
| Shallot | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jul 9 – Aug 27 | 90–120 |
| Shiso | Feb 19 | Apr 16 | Apr 23 | — | Jun 18 – Aug 13 | 50–70 |
| Snap Peas | Feb 12 | Apr 16 | Apr 23 | — | Jun 18 – Aug 13 | 55–70 |
| Snow Peas | Mar 5 | Mar 26 | Apr 9 | Aug 16 | Jun 4 – Jul 30 | 50–65 |
| Soybeans | — | Apr 16 | — | — | Jul 9 – Sep 3 | 80–120 |
| Spaghetti Squash | Mar 5 | Apr 16 | Apr 23 | — | Jul 23 – Aug 20 | 85–100 |
| Spinach | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jul 16 | 35–50 |
| Squash (Summer) | Mar 5 | Apr 16 | Apr 23 | — | Jun 11 – Aug 13 | 45–65 |
| Squash (Winter) | Mar 5 | Apr 16 | Apr 23 | — | Jul 16 – Sep 10 | 80–120 |
| Sunchoke | — | — | Apr 23 | — | Aug 13 – Oct 8 | 110–150 |
| Sweet Corn | — | Apr 16 | — | — | Jun 18 – Jul 30 | 60–90 |
| Sweet Potatoes | Feb 12 | Apr 16 | Apr 23 | — | Jul 23 – Sep 10 | 90–120 |
| Tatsoi | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 14 – Jun 18 | 35–50 |
| Tomatillo | Feb 12 | Apr 16 | Apr 23 | — | Jun 25 – Sep 3 | 60–85 |
| Tomatoes | Feb 12 | Apr 16 | Apr 23 | — | Jun 25 – Sep 3 | 60–85 |
| Turnip | — | Mar 26 | — | Aug 16 | May 7 – Jun 11 | 40–60 |
| Watercress | Mar 5 | Mar 26 | Apr 9 | Aug 16 | May 21 – Jun 25 | 40–60 |
| Watermelon | Mar 5 | Apr 16 | Apr 23 | — | Jul 2 – Aug 20 | 70–100 |
| Wax Beans | — | Apr 16 | — | — | Jun 11 – Aug 6 | 50–65 |
| Winter Melon | Feb 12 | Apr 16 | Apr 23 | — | Jul 23 – Sep 10 | 90–120 |
| Yard Long Beans | Feb 12 | Apr 16 | Apr 23 | — | Jun 18 – Jul 30 | 55–80 |
| Zucchini | Mar 5 | Apr 16 | Apr 23 | — | Jun 11 – Aug 6 | 45–60 |
🍓 Fruits to Grow in Linn County
27 fruits that grow well in Zone 6b with planting dates for Linn County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 30 | — | Jul 30 – Nov 12 | 90–180 |
| Aronia | — | — | Apr 30 | — | — | 730–1095 |
| Blackberries | — | — | Apr 30 | — | — | 365–730 |
| Blueberries | — | — | Apr 30 | — | — | 730–1095 |
| Boysenberries | — | — | Apr 30 | — | — | 365–730 |
| Cantaloupe | — | — | Apr 30 | — | Jul 9 – Aug 13 | 70–90 |
| Che Fruit | — | — | Apr 30 | — | — | 1095–1825 |
| Cranberries | — | — | Apr 30 | — | — | 730–1095 |
| Currants | — | — | Apr 30 | — | — | 730–1095 |
| Elderberries | — | — | Apr 30 | — | — | 730–1095 |
| Goji Berries | — | — | Apr 30 | — | — | 730–1095 |
| Gooseberries | — | — | Apr 30 | — | — | 730–1095 |
| Grapes | — | — | Apr 30 | — | — | 730–1095 |
| Ground Cherry | — | — | Apr 30 | — | Jul 9 – Sep 3 | 65–80 |
| Hardy Kiwi | — | — | Apr 30 | — | — | 1095–1825 |
| Haskaps | — | — | Apr 30 | — | — | 730–1095 |
| Honeydew | — | — | Apr 30 | — | Jul 23 – Sep 3 | 80–110 |
| Jostaberry | — | — | Apr 30 | — | — | 730–1095 |
| Lingonberries | — | — | Apr 30 | — | — | 730–1095 |
| Medlar | — | — | Apr 30 | — | — | 1095–1825 |
| Mulberries | — | — | Apr 30 | — | — | 730–1825 |
| Pawpaw | — | — | Apr 30 | — | — | 1095–2555 |
| Persimmon | — | — | Apr 30 | — | — | 1095–2555 |
| Quince | — | — | Apr 30 | — | — | 1095–1825 |
| Raspberries | — | — | Apr 30 | — | — | 365–730 |
| Serviceberries | — | — | Apr 30 | — | — | 730–1095 |
| Strawberries | — | — | Apr 30 | — | Jul 30 – Nov 12 | 90–365 |
🌿 Herbs to Grow in Linn County
35 herbs that grow well in Zone 6b with planting dates for Linn County.
Show all 35 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 5 | Mar 26 | Apr 2 | Aug 16 | — | 365–730 |
| Anise | Mar 5 | Mar 26 | Apr 2 | Aug 16 | Jul 2 – Sep 17 | 90–120 |
| Basil | Feb 19 | Apr 16 | Apr 23 | — | Jun 18 – Aug 20 | 50–75 |
| Bee Balm | — | — | Apr 16 | — | Jul 16 – Oct 1 | 90–120 |
| Borage | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 28 – Jul 16 | 50–60 |
| Caraway | Mar 5 | Mar 26 | Apr 2 | Aug 16 | — | 365–450 |
| Catnip | — | — | Apr 16 | — | Jun 18 – Aug 20 | 60–80 |
| Chamomile | Mar 5 | Mar 26 | Apr 2 | Aug 16 | Jun 4 – Aug 13 | 60–90 |
| Chervil | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 14 – Jul 16 | 40–60 |
| Chives | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Cilantro | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 14 – Jul 16 | 40–60 |
| Comfrey | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Cumin | Mar 5 | Mar 26 | Apr 2 | Aug 16 | Jul 16 – Sep 17 | 100–120 |
| Dill | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 14 – Jul 16 | 40–60 |
| Epazote | Feb 19 | Apr 16 | Apr 23 | — | Jun 11 – Aug 6 | 45–60 |
| Fennel (herb) | Mar 5 | Mar 26 | Apr 2 | Aug 16 | Jun 4 – Aug 13 | 60–90 |
| Feverfew | — | — | Apr 16 | — | Jul 16 – Oct 1 | 90–120 |
| Garlic Chives | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Horehound | — | — | Apr 16 | — | Jul 2 – Aug 27 | 75–90 |
| Hyssop | — | — | Apr 16 | — | Jun 25 – Aug 27 | 70–90 |
| Lemon Balm | — | — | Apr 16 | — | Jun 18 – Aug 6 | 60–70 |
| Lemon Thyme | — | — | Apr 16 | — | Jun 25 – Aug 27 | 70–90 |
| Lovage | — | — | Apr 16 | — | Jun 25 – Aug 27 | 70–90 |
| Marjoram | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Mint | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Oregano | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Parsley | Mar 5 | Mar 26 | Apr 2 | Aug 16 | Jun 4 – Aug 6 | 60–80 |
| Rue | — | — | Apr 16 | — | Jun 25 – Aug 27 | 70–90 |
| Sage | — | — | Apr 16 | — | Jul 2 – Aug 27 | 75–90 |
| Savory | — | — | Apr 16 | — | Jun 11 – Aug 6 | 50–70 |
| Sorrel | Mar 5 | Mar 26 | Apr 2 | Aug 16 | May 14 – Jul 16 | 40–60 |
| Tarragon | — | — | Apr 16 | — | Jun 18 – Aug 27 | 60–90 |
| Thai Basil | Feb 19 | Apr 16 | Apr 23 | — | Jun 18 – Aug 20 | 50–75 |
| Thyme | — | — | Apr 16 | — | Jun 25 – Aug 27 | 70–90 |
| Valerian | — | — | Apr 16 | — | Aug 20 – Oct 29 | 120–180 |
🌸 Flowers to Grow in Linn County
53 flowers that grow well in Zone 6b with planting dates for Linn County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 19 | Apr 9 | Apr 9 | — | Jun 4 – Sep 17 | 60–75 |
| Alliums | — | — | — | Sep 13 | Oct 11 – Nov 8 | 28–42 |
| Anemones | Mar 12 | — | Apr 9 | — | May 7 – Jun 4 | 90–120 |
| Astilbe | Feb 5 | — | Apr 16 | — | Jun 25 – Sep 3 | 70–100 |
| Bachelor's Button | Feb 26 | Mar 12 | Apr 9 | Sep 13 | Jun 11 – Sep 3 | 60–90 |
| Begonias | Jan 29 | — | Apr 16 | — | Jun 25 – Oct 1 | 70–90 |
| Black-eyed Susan | Feb 5 | Apr 9 | Apr 16 | — | Jul 2 – Oct 22 | 60–80 |
| Bleeding Hearts | Feb 5 | — | Apr 16 | — | Jun 11 – Jul 16 | 60–90 |
| Calendula | Feb 26 | Mar 12 | Apr 9 | — | May 28 – Sep 3 | 50–70 |
| California Poppy | — | Mar 12 | — | — | May 21 – Jul 16 | 60–90 |
| Celosia | Mar 5 | Apr 16 | Apr 16 | — | Jun 18 – Oct 8 | 60–90 |
| Columbine | Feb 5 | Apr 16 | Apr 16 | — | Jun 11 – Jul 16 | 70–100 |
| Coreopsis | Feb 5 | Apr 9 | Apr 16 | — | Jun 25 – Oct 22 | 60–80 |
| Cosmos | Mar 12 | Apr 9 | Apr 9 | — | Jun 18 – Oct 1 | 60–90 |
| Crocus | — | — | — | Sep 13 | Aug 2 – Aug 23 | 10–20 |
| Daffodils | — | — | — | Sep 13 | Aug 9 – Aug 30 | 20–40 |
| Dahlias | Mar 12 | Apr 16 | Apr 16 | — | Jul 2 – Oct 22 | 70–120 |
| Daylily | Feb 5 | — | Apr 16 | — | Jul 2 – Oct 22 | 60–90 |
| Dianthus | Feb 12 | Mar 12 | Mar 19 | — | May 7 – Aug 6 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 5 | Apr 16 | Apr 16 | — | Jul 2 – Oct 22 | 70–90 |
| Foxglove | Feb 5 | Apr 16 | Apr 16 | — | Jun 11 – Jul 16 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 19 | Apr 16 | Apr 16 | — | Jun 25 – Oct 29 | 70–100 |
| Geraniums | Jan 29 | — | Apr 16 | — | Jun 25 – Oct 1 | 70–100 |
| Gladiolus | — | Apr 9 | Apr 9 | — | Jun 25 – Oct 15 | 70–100 |
| Hostas | Jan 29 | — | Apr 16 | — | Jul 2 – Oct 22 | 60–90 |
| Hyacinths | — | — | — | Sep 13 | Aug 30 – Sep 20 | 14–28 |
| Hydrangeas | Jan 29 | — | Apr 16 | — | Jun 25 – Oct 8 | 90–150 |
| Impatiens | Feb 12 | — | Apr 16 | — | Jun 25 – Oct 8 | 60–75 |
| Irises | — | Division | Apr 16 | — | Jun 11 – Jul 9 | 60–100 |
| Larkspur | — | Mar 12 | — | — | May 21 – Jul 16 | 60–90 |
| Lavender | Jan 29 | — | Apr 23 | — | Jul 2 – Aug 27 | 90–120 |
| Lilies | — | Division | Apr 16 | — | Jun 25 – Oct 1 | 70–120 |
| Lobelia | Feb 5 | — | Mar 26 | — | May 21 – Aug 13 | 70–80 |
| Lupine | Feb 5 | Apr 16 | Apr 16 | — | Jun 11 – Jul 16 | 75–100 |
| Marigolds | Feb 26 | Apr 9 | Apr 9 | — | Jun 4 – Sep 10 | 50–70 |
| Nasturtium | Mar 12 | Apr 9 | Apr 9 | — | Jun 4 – Oct 1 | 55–65 |
| Pansy | Jan 29 | — | Apr 9 | Aug 30 | Jun 4 – Aug 13 | 70–90 |
| Peonies | — | Division | Apr 16 | — | Jun 18 – Jul 23 | 90–120 |
| Petunia | Feb 12 | — | Apr 16 | — | Jun 25 – Oct 8 | 70–90 |
| Phlox | Feb 5 | Apr 16 | Apr 16 | — | Jun 25 – Sep 17 | 80–110 |
| Portulaca | Mar 5 | Apr 16 | Apr 16 | — | Jun 4 – Sep 24 | 50–70 |
| Ranunculus | Feb 26 | — | Apr 9 | — | May 14 – Jun 11 | 90–120 |
| Roses | Jan 29 | — | Apr 16 | — | Jun 25 – Oct 22 | 90–180 |
| Salvia | Feb 5 | — | Apr 9 | — | Jun 18 – Oct 1 | 70–90 |
| Sedum (Stonecrop) | Feb 5 | — | Apr 16 | — | Aug 6 – Oct 29 | 60–90 |
| Snapdragon | Jan 29 | Mar 19 | Apr 9 | — | Jun 18 – Sep 3 | 70–100 |
| Sunflower | Mar 19 | Apr 9 | Apr 9 | — | Jul 2 – Oct 1 | 70–100 |
| Sweet Alyssum | Feb 26 | Mar 19 | Apr 9 | — | May 21 – Aug 6 | 45–60 |
| Sweet Pea | Feb 26 | Mar 5 | Apr 9 | — | Jun 25 – Sep 3 | 65–85 |
| Tulips | — | — | — | Sep 20 | Aug 30 – Sep 27 | 15–30 |
| Vinca (Annual) | Jan 29 | — | Apr 16 | — | Jun 25 – Oct 8 | 70–90 |
| Yarrow | Feb 5 | Apr 9 | Apr 16 | — | Jun 25 – Oct 22 | 60–90 |
| Zinnia | Mar 12 | Apr 9 | Apr 9 | — | Jun 18 – Sep 24 | 60–70 |
Monthly Planting Guide for Linn County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Linn County.
Frequently Asked Questions
What planting zone is Linn County, KS?
Linn 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 Linn County, KS?
Based on 31 years of NOAA weather station data, the median last spring frost in Linn County falls around April 9. In 8 out of 10 years, last frost lands between March 26 and April 22 — a 27-day window of variability. Use April 22 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Linn County, KS?
The median first fall frost in Linn County arrives around October 25. In cold years it can arrive as early as October 9; 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 Linn County?
Linn County has a frost-free growing season of approximately 199 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending shorter by about 1.56 days per decade.
What is the soil like in Linn County for gardening?
Linn County has predominantly Loam soil with a pH range of 6.6–7.2 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Linn County?
Linn County has commercial agriculture that includes Corn, Wheat, Soybeans, Hay. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Linn County a good location for home gardening?
Linn County scores 64/100 (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 Linn County Garden Planner — Free
A 22-page printable planner built for Linn 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