Miami County, IN — Planting Guide
Top priorities for Miami County, Indiana gardeners in July
If you only do a handful of things in the garden this July, make it these. They're sequenced around your zone's frost timing.
-
Sow peppers, begonias, and eggplant in trays indoors
Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.
-
Harvest basil, carrots, and cucumber as they ripen
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
August prep starts now
- First harvests: basil, cucumber, and green beans
- Fall sowing: carrots, kale, and lettuce
Miami County is in USDA Zone 6a. The average last spring frost is April 24 and the first fall frost is October 17, giving you a growing season of approximately 176 days.
At an elevation of 786 ft, Miami County receives approximately 33.8 in of rainfall annually. Summer highs average 83°F with winter lows around 12°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 31 days year to year — ranging from April 9 in warm years to May 10 in cold years. The growing season is trending shorter by about 1.35 days per decade. Miami County scores 65/100 (Good) on the Microclimate Index.
🌡️ Zone
6a (-10°F to -5°F min)
❄️ Last Frost
April 24
🍂 First Frost
October 17
📅 Growing Season
176 days
⛰️ Elevation
786 ft
🌧️ Annual Rainfall
33.8 in
Monthly Watering Calendar for Miami County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
The practical takeaway: In humid climates, watering is usually about timing (morning, not evening, to prevent disease) more than volume. In dry climates, it's about depth (water deep, less often) more than frequency. Miami County's 34" annual tells you which side you're on.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.4 in | 8 days | — | None |
| Feb | 1.7 in | 6 days | — | None |
| Mar | 2.5 in | 8 days | — | None |
| Apr | 3.2 in | 8 days | 1.1 in | Moderate |
| May | 3.7 in | 12 days | 0.6 in | Moderate |
| Jun | 3.7 in | 9 days | 0.6 in | Moderate |
| Jul | 3.7 in | 9 days | 0.6 in | Moderate |
| Aug | 3.7 in | 7 days | 0.6 in | Moderate |
| Sep | 3.4 in | 8 days | 0.9 in | Moderate |
| Oct | 2.4 in | 8 days | 1.9 in | High |
| Nov | 2.6 in | 7 days | — | None |
| Dec | 1.8 in | 8 days | — | None |
Annual total: 33.8 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.
Miami County Soil Profile
Soil Type
Silt Loam
Soil pH
6-7.3
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) | May 10 | Oct 28 | 171 days |
| Cautious | Apr 28 | Oct 22 | 177 days |
| Average year | Apr 24 | Oct 17 | 176 days |
| Optimistic | Apr 16 | Oct 13 | 180 days |
| Aggressive (risky) | Apr 9 | Oct 4 | 178 days |
Not very — frost dates can vary by ±31 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 1.4 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Miami County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Miami 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 Miami County's climate and soil.
County Extension Office
Miami County Purdue University Extension Extension Office
Phone: 765-494-8491
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 Miami County
Finding local nurseries & garden centers in Miami County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Miami 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 Miami County IN" or "garden center Miami 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 Miami County IN" or check your extension office and local parks department. Facebook groups like "Miami County Gardeners" or "Indiana 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 Miami County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Quick context: Photoperiod-sensitive crops will fail spectacularly if planted at the wrong latitude. Sweet onions in Michigan? Tiny. Spanish onions in Florida? Tiny. Match variety to Miami County's daylight pattern and you'll see the difference.
Longest Day
14.9 hours
Summer solstice daylight
Shortest Day
9.1 hours
Winter solstice daylight
Peak Sun Hours
9.4 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 | 9.4 hr | 3.8 hr | Short day |
| February | 10.4 hr | 4.8 hr | Short day |
| March | 11.7 hr | 5.9 hr | Short day |
| April | 13.1 hr | 6.7 hr | Neutral |
| May | 14.3 hr | 8.5 hr | Long day |
| June | 14.9 hr | 9 hr | Long day |
| July | 14.6 hr | 9.4 hr | Long day |
| August | 13.6 hr | 8.1 hr | Neutral |
| September | 12.3 hr | 7 hr | Neutral |
| October | 10.9 hr | 5.9 hr | Short day |
| November | 9.7 hr | 3.7 hr | Short day |
| December | 9.1 hr | 3.4 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Miami County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
For new gardeners: Lettuce germinates at 35°F. Beans want 60°F. Tomatoes 65°F+. Soil temp, not air temp, is what plants feel. Miami County's monthly curve tells you when each crop actually has the conditions to take off.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jun through Sep.
Best Month to Compost
Jun
Microbial activity peaks when soil is warm.
Active Composting
6 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 | 23°F | 33°F | ❄️ Dormant | ~36 weeks |
| Feb | 26°F | 30°F | ❄️ Dormant | ~36 weeks |
| Mar | 33°F | 34°F | ❄️ Dormant | ~36 weeks |
| Apr | 45°F | 43°F | 🐢 Slow | ~24 weeks |
| May | 58°F | 56°F | ♻️ Active | ~14 weeks |
| Jun | 68°F | 64°F | 🔥 Peak | ~8 weeks |
| Jul | 77°F | 72°F | 🔥 Peak | ~8 weeks |
| Aug | 79°F | 72°F | 🔥 Peak | ~8 weeks |
| Sep | 73°F | 70°F | 🔥 Peak | ~8 weeks |
| Oct | 56°F | 61°F | ♻️ Active | ~14 weeks |
| Nov | 45°F | 49°F | 🐢 Slow | ~24 weeks |
| Dec | 30°F | 39°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 Miami County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
What this means for you: Pest score isn't pass/fail. It's a planning input. Higher scores mean: more compost (resilient plants), wider spacing (air circulation), resistant varieties (built-in defense), and inspection (catch issues at egg stage).
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 5 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | May, Jun, Jul, Aug |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash bugs | Moderate | Jun, Jul, Aug |
| Tomato hornworms | Low | Jul, Aug |
| Cabbage loopers | Low | May, Jun, Jul, Aug |
Organic pest management tips
- Maintain healthy soil with regular compost additions to build natural pest resistance
- Practice crop rotation annually to break pest cycles
- Encourage beneficial insects with flowering herbs like dill, fennel, and yarrow
Cover Crops for Miami County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
The practical takeaway: Cover crops are the experienced gardener's secret weapon. Miami 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 26 | Aug 22 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Apr 27 | Aug 15 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 26 | Aug 22 | ✓ 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 21 | Sep 26 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 22 | Apr 10 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Aug 30 | Apr 3 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 5 | Apr 3 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 6 | Apr 10 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 12 | Apr 3 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 25 | Apr 3 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Miami County
Quick context: Wind affects three things gardeners forget: how fast soil dries (more wind = more watering), whether pollinators can work (calm beats gusty), and whether your trellised crops stay upright. Miami County sees 9.8 mph on average — a forgiving baseline.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 12 mph Summer: 10 mph
Fall: 11 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
7.3/10
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 (130 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Miami 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: A 1,000 sq ft roof captures about 600 gallons from a single 1" rainfall. Miami County gets 34" of rain a year — a couple of well-placed rain barrels can cover most summer watering. In dry climates the math's even better: every captured gallon is one you don't buy.
Annual Collection
16,845 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
May, Jun, Jul, 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 33.8 inches of rain per year
- A 1,000 sq ft roof can collect roughly 16,845 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 Miami County
Soil Type
Silt Loam
Soil pH 6–7.3 · 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
176-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
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 Miami County
107 vegetables that grow well in Zone 6a with planting dates for Miami County.
Show all 107 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Amaranth | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Arugula | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jul 31 | 30–50 |
| Asparagus | — | — | May 8 | — | — | 730–1095 |
| Beets | — | Apr 10 | — | Aug 8 | Jun 5 – Jul 3 | 50–70 |
| Belgian Endive | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Aug 14 – Oct 9 | 110–150 |
| Bitter Melon | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 21 | 60–90 |
| Black Beans | — | May 1 | — | — | Jul 31 – Sep 18 | 90–120 |
| Bok Choy | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 10 | 40–60 |
| Broccoli | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 26 – Aug 7 | 60–90 |
| Broccoli Rabe | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 10 | 40–60 |
| Brussels Sprouts | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 24 – Sep 18 | 90–130 |
| Butternut Squash | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 11 | 85–110 |
| Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 26 – Aug 21 | 60–100 |
| Calabash | Feb 27 | May 1 | May 8 | — | Jul 31 – Sep 25 | 80–120 |
| Carrots | — | Apr 10 | — | Aug 8 | Jun 12 – Jul 17 | 60–80 |
| Cauliflower | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 21 | 55–100 |
| Celeriac | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Aug 7 – Sep 11 | 100–120 |
| Celery | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 17 – Sep 11 | 80–120 |
| Celtuce | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 26 – Aug 7 | 60–90 |
| Chard | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 7 | 50–60 |
| Chickpeas | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 17 – Aug 28 | 80–110 |
| Chicory | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 26 – Aug 7 | 60–85 |
| Chinese Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Jul 17 | 50–70 |
| Christmas Lima Beans | Feb 27 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Collard Greens | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 21 | 55–75 |
| Corn | — | May 1 | — | — | Jul 3 – Aug 28 | 60–100 |
| Cowpeas | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Cress | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 8 – May 29 | 14–21 |
| Crookneck Squash | Mar 20 | May 1 | May 8 | — | Jun 26 – Jul 24 | 45–60 |
| Crosne | — | Apr 10 | — | Aug 8 | Sep 11 – Oct 23 | 150–200 |
| Cucumber | Mar 20 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–70 |
| Daikon | — | Apr 10 | — | Aug 8 | Jun 5 – Jul 3 | 50–70 |
| Delicata Squash | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Edamame | — | May 1 | — | — | Jul 17 – Aug 28 | 75–100 |
| Eggplant | Feb 13 | May 1 | May 8 | — | Jul 17 – Sep 18 | 65–85 |
| Endive | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 12 – Jul 17 | 45–65 |
| Escarole | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Jul 17 | 50–70 |
| Fava Beans | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 10 – Aug 21 | 75–100 |
| Fennel | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 21 | 60–90 |
| Garlic | — | — | — | Sep 5 | Dec 5 – Mar 20 | 90–240 |
| Green Beans | — | May 1 | — | — | Jun 26 – Aug 21 | 50–65 |
| Horseradish | — | — | May 8 | — | Sep 11 – Nov 20 | 120–180 |
| Hot Peppers | Feb 13 | May 1 | May 8 | — | Jul 17 – Oct 23 | 70–120 |
| Hubbard Squash | Mar 20 | May 1 | May 8 | — | Aug 21 – Sep 25 | 100–120 |
| Kabocha | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 4 | 85–100 |
| Kai Lan | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 12 – Jul 10 | 45–60 |
| Kale | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 14 | 50–70 |
| Kidney Beans | — | May 1 | — | — | Jul 31 – Sep 4 | 85–110 |
| Kohlrabi | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 12 – Jul 17 | 45–65 |
| Komatsuna | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jul 3 | 35–50 |
| Leeks | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 24 – Oct 9 | 90–150 |
| Lentils | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 17 – Aug 28 | 80–110 |
| Lettuce | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Aug 7 | 30–60 |
| Lima Beans | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Loofah | Feb 27 | May 1 | May 8 | — | Aug 21 – Oct 23 | 100–150 |
| Luffa | Feb 27 | May 1 | May 8 | — | Aug 7 – Oct 23 | 90–150 |
| Mache | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 10 | 40–60 |
| Melon | Mar 20 | May 1 | May 8 | — | Jul 17 – Sep 4 | 70–100 |
| Microgreens | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 1 – May 29 | 7–21 |
| Mitsuba | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jun 12 – Aug 7 | 50–70 |
| Mizuna | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jun 26 | 30–45 |
| Mustard Greens | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jul 31 | 30–50 |
| Napa Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Jul 24 | 55–75 |
| New Zealand Spinach | Feb 27 | May 1 | May 8 | — | Jul 3 – Jul 31 | 55–70 |
| Okra | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–65 |
| Onion | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 24 – Sep 11 | 90–120 |
| Pac Choi | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 3 | 40–55 |
| Parsnip | — | Apr 10 | — | Aug 8 | Jul 24 – Sep 4 | 100–130 |
| Patty Pan Squash | Mar 20 | May 1 | May 8 | — | Jun 26 – Jul 24 | 45–60 |
| Peas | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 14 | 55–70 |
| Peppers | Feb 13 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–90 |
| Pole Beans | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 55–70 |
| Potatoes | Feb 27 | May 1 | May 8 | — | Jul 17 – Sep 25 | 70–120 |
| Pumpkin | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 25 | 85–120 |
| Purslane | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 10 | 40–60 |
| Radicchio | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 26 – Jul 31 | 60–80 |
| Radish | — | Apr 10 | — | Aug 8 | May 8 – May 29 | 22–35 |
| Rhubarb | — | — | May 15 | — | — | 365–730 |
| Romanesco | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 10 – Aug 21 | 75–100 |
| Rutabaga | — | Apr 10 | — | Aug 8 | Jul 3 – Aug 7 | 80–100 |
| Salsify | — | Apr 10 | — | Aug 8 | Jul 24 – Sep 4 | 100–130 |
| Savoy Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 3 – Aug 28 | 70–110 |
| Scallions | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Jul 17 | 50–70 |
| Scarlet Runner Beans | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 14 | 60–80 |
| Shallot | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jul 24 – Sep 11 | 90–120 |
| Shiso | Mar 6 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–70 |
| Snap Peas | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 55–70 |
| Snow Peas | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 19 – Aug 14 | 50–65 |
| Soybeans | — | May 1 | — | — | Jul 24 – Sep 18 | 80–120 |
| Spaghetti Squash | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 4 | 85–100 |
| Spinach | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jul 31 | 35–50 |
| Squash (Summer) | Mar 20 | May 1 | May 8 | — | Jun 26 – Aug 28 | 45–65 |
| Squash (Winter) | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 25 | 80–120 |
| Sunchoke | — | — | May 8 | — | Aug 28 – Oct 23 | 110–150 |
| Sweet Corn | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Sweet Potatoes | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Tatsoi | Mar 20 | Apr 10 | Apr 24 | Aug 8 | May 29 – Jul 3 | 35–50 |
| Tomatillo | Feb 27 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–85 |
| Tomatoes | Feb 27 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–85 |
| Turnip | — | Apr 10 | — | Aug 8 | May 22 – Jun 26 | 40–60 |
| Watercress | Mar 20 | Apr 10 | Apr 24 | Aug 8 | Jun 5 – Jul 10 | 40–60 |
| Watermelon | Mar 20 | May 1 | May 8 | — | Jul 17 – Sep 4 | 70–100 |
| Wax Beans | — | May 1 | — | — | Jun 26 – Aug 21 | 50–65 |
| Winter Melon | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Yard Long Beans | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 14 | 55–80 |
| Zucchini | Mar 20 | May 1 | May 8 | — | Jun 26 – Aug 21 | 45–60 |
🍓 Fruits to Grow in Miami County
27 fruits that grow well in Zone 6a with planting dates for Miami County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 15 | — | Aug 14 – Nov 27 | 90–180 |
| Aronia | — | — | May 15 | — | — | 730–1095 |
| Blackberries | — | — | May 15 | — | — | 365–730 |
| Blueberries | — | — | May 15 | — | — | 730–1095 |
| Boysenberries | — | — | May 15 | — | — | 365–730 |
| Cantaloupe | — | — | May 15 | — | Jul 24 – Aug 28 | 70–90 |
| Che Fruit | — | — | May 15 | — | — | 1095–1825 |
| Cranberries | — | — | May 15 | — | — | 730–1095 |
| Currants | — | — | May 15 | — | — | 730–1095 |
| Elderberries | — | — | May 15 | — | — | 730–1095 |
| Goji Berries | — | — | May 15 | — | — | 730–1095 |
| Gooseberries | — | — | May 15 | — | — | 730–1095 |
| Grapes | — | — | May 15 | — | — | 730–1095 |
| Ground Cherry | — | — | May 15 | — | Jul 24 – Sep 18 | 65–80 |
| Hardy Kiwi | — | — | May 15 | — | — | 1095–1825 |
| Haskaps | — | — | May 15 | — | — | 730–1095 |
| Honeydew | — | — | May 15 | — | Aug 7 – Sep 18 | 80–110 |
| Jostaberry | — | — | May 15 | — | — | 730–1095 |
| Lingonberries | — | — | May 15 | — | — | 730–1095 |
| Medlar | — | — | May 15 | — | — | 1095–1825 |
| Mulberries | — | — | May 15 | — | — | 730–1825 |
| Pawpaw | — | — | May 15 | — | — | 1095–2555 |
| Persimmon | — | — | May 15 | — | — | 1095–2555 |
| Quince | — | — | May 15 | — | — | 1095–1825 |
| Raspberries | — | — | May 15 | — | — | 365–730 |
| Serviceberries | — | — | May 15 | — | — | 730–1095 |
| Strawberries | — | — | May 15 | — | Aug 14 – Nov 27 | 90–365 |
🌿 Herbs to Grow in Miami County
35 herbs that grow well in Zone 6a with planting dates for Miami County.
Show all 35 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 20 | Apr 10 | Apr 17 | Aug 8 | — | 365–730 |
| Anise | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jul 17 – Oct 2 | 90–120 |
| Basil | Mar 6 | May 1 | May 8 | — | Jul 3 – Sep 4 | 50–75 |
| Bee Balm | — | — | May 1 | — | Jul 31 – Oct 16 | 90–120 |
| Borage | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jun 12 – Jul 31 | 50–60 |
| Caraway | Mar 20 | Apr 10 | Apr 17 | Aug 8 | — | 365–450 |
| Catnip | — | — | May 1 | — | Jul 3 – Sep 4 | 60–80 |
| Chamomile | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jun 19 – Aug 28 | 60–90 |
| Chervil | Mar 20 | Apr 10 | Apr 17 | Aug 8 | May 29 – Jul 31 | 40–60 |
| Chives | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Cilantro | Mar 20 | Apr 10 | Apr 17 | Aug 8 | May 29 – Jul 31 | 40–60 |
| Comfrey | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Cumin | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jul 31 – Oct 2 | 100–120 |
| Dill | Mar 20 | Apr 10 | Apr 17 | Aug 8 | May 29 – Jul 31 | 40–60 |
| Epazote | Mar 6 | May 1 | May 8 | — | Jun 26 – Aug 21 | 45–60 |
| Fennel (herb) | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jun 19 – Aug 28 | 60–90 |
| Feverfew | — | — | May 1 | — | Jul 31 – Oct 16 | 90–120 |
| Garlic Chives | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Horehound | — | — | May 1 | — | Jul 17 – Sep 11 | 75–90 |
| Hyssop | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Lemon Balm | — | — | May 1 | — | Jul 3 – Aug 21 | 60–70 |
| Lemon Thyme | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Lovage | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Marjoram | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Mint | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Oregano | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Parsley | Mar 20 | Apr 10 | Apr 17 | Aug 8 | Jun 19 – Aug 21 | 60–80 |
| Rue | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Sage | — | — | May 1 | — | Jul 17 – Sep 11 | 75–90 |
| Savory | — | — | May 1 | — | Jun 26 – Aug 21 | 50–70 |
| Sorrel | Mar 20 | Apr 10 | Apr 17 | Aug 8 | May 29 – Jul 31 | 40–60 |
| Tarragon | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Thai Basil | Mar 6 | May 1 | May 8 | — | Jul 3 – Sep 4 | 50–75 |
| Thyme | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Valerian | — | — | May 1 | — | Sep 4 – Nov 13 | 120–180 |
🌸 Flowers to Grow in Miami County
53 flowers that grow well in Zone 6a with planting dates for Miami County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 6 | Apr 24 | Apr 24 | — | Jun 19 – Sep 25 | 60–75 |
| Alliums | — | — | — | Sep 5 | Oct 3 – Oct 31 | 28–42 |
| Anemones | Mar 27 | — | Apr 24 | — | May 29 – Jun 26 | 90–120 |
| Astilbe | Feb 20 | — | May 1 | — | Jul 10 – Sep 18 | 70–100 |
| Bachelor's Button | Mar 13 | Mar 27 | Apr 24 | Sep 5 | Jun 26 – Sep 11 | 60–90 |
| Begonias | Feb 13 | — | May 1 | — | Jul 10 – Oct 9 | 70–90 |
| Black-eyed Susan | Feb 20 | Apr 24 | May 1 | — | Jul 17 – Oct 30 | 60–80 |
| Bleeding Hearts | Feb 20 | — | May 1 | — | Jun 26 – Jul 31 | 60–90 |
| Calendula | Mar 13 | Mar 27 | Apr 24 | — | Jun 12 – Sep 11 | 50–70 |
| California Poppy | — | Mar 27 | — | — | Jun 5 – Jul 17 | 60–90 |
| Celosia | Mar 20 | May 1 | May 1 | — | Jul 3 – Oct 16 | 60–90 |
| Columbine | Feb 20 | May 8 | May 8 | — | Jul 3 – Aug 7 | 70–100 |
| Coreopsis | Feb 20 | May 1 | May 1 | — | Jul 10 – Oct 30 | 60–80 |
| Cosmos | Mar 27 | Apr 24 | Apr 24 | — | Jul 3 – Oct 9 | 60–90 |
| Crocus | — | — | — | Sep 5 | Jul 25 – Aug 15 | 10–20 |
| Daffodils | — | — | — | Sep 5 | Aug 1 – Aug 22 | 20–40 |
| Dahlias | Mar 27 | May 1 | May 1 | — | Jul 17 – Oct 30 | 70–120 |
| Daylily | Feb 20 | — | May 1 | — | Jul 17 – Oct 30 | 60–90 |
| Dianthus | Feb 27 | Mar 27 | Apr 10 | — | May 29 – Aug 28 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 20 | May 8 | May 8 | — | Jul 31 – Nov 6 | 70–90 |
| Foxglove | Feb 20 | May 1 | May 1 | — | Jun 26 – Jul 31 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 6 | May 1 | May 1 | — | Jul 10 – Nov 13 | 70–100 |
| Geraniums | Feb 13 | — | May 1 | — | Jul 10 – Oct 9 | 70–100 |
| Gladiolus | — | Apr 24 | Apr 24 | — | Jul 10 – Oct 23 | 70–100 |
| Hostas | Feb 13 | — | May 1 | — | Jul 17 – Oct 30 | 60–90 |
| Hyacinths | — | — | — | Sep 5 | Aug 22 – Sep 12 | 14–28 |
| Hydrangeas | Feb 13 | — | May 1 | — | Jul 10 – Oct 16 | 90–150 |
| Impatiens | Feb 27 | — | May 1 | — | Jul 10 – Oct 16 | 60–75 |
| Irises | — | Division | May 1 | — | Jun 26 – Jul 24 | 60–100 |
| Larkspur | — | Mar 27 | — | — | Jun 5 – Jul 31 | 60–90 |
| Lavender | Feb 13 | — | May 8 | — | Jul 17 – Sep 11 | 90–120 |
| Lilies | — | Division | May 1 | — | Jul 10 – Oct 16 | 70–120 |
| Lobelia | Feb 20 | — | Apr 10 | — | Jun 5 – Aug 28 | 70–80 |
| Lupine | Feb 20 | May 1 | May 1 | — | Jun 26 – Jul 31 | 75–100 |
| Marigolds | Mar 13 | May 1 | May 1 | — | Jun 26 – Sep 25 | 50–70 |
| Nasturtium | Mar 27 | May 1 | May 1 | — | Jun 26 – Oct 16 | 55–65 |
| Pansy | Feb 13 | — | Apr 24 | Aug 22 | Jun 19 – Aug 21 | 70–90 |
| Peonies | — | Division | May 1 | — | Jul 3 – Aug 7 | 90–120 |
| Petunia | Feb 27 | — | May 1 | — | Jul 10 – Oct 16 | 70–90 |
| Phlox | Feb 20 | May 1 | May 1 | — | Jul 10 – Oct 2 | 80–110 |
| Portulaca | Mar 20 | May 1 | May 1 | — | Jun 19 – Oct 2 | 50–70 |
| Ranunculus | Mar 13 | — | Apr 24 | — | Jun 5 – Jul 3 | 90–120 |
| Roses | Feb 13 | — | May 1 | — | Jul 10 – Oct 30 | 90–180 |
| Salvia | Feb 20 | — | May 1 | — | Jul 10 – Oct 16 | 70–90 |
| Sedum (Stonecrop) | Feb 20 | — | May 1 | — | Aug 21 – Nov 6 | 60–90 |
| Snapdragon | Feb 13 | Apr 3 | Apr 24 | — | Jul 3 – Sep 11 | 70–100 |
| Sunflower | Apr 3 | May 1 | May 1 | — | Jul 24 – Oct 16 | 70–100 |
| Sweet Alyssum | Mar 6 | Apr 3 | Apr 24 | — | Jun 5 – Aug 14 | 45–60 |
| Sweet Pea | Mar 13 | Mar 20 | Apr 24 | — | Jul 10 – Sep 18 | 65–85 |
| Tulips | — | — | — | Sep 5 | Aug 15 – Sep 12 | 15–30 |
| Vinca (Annual) | Feb 13 | — | May 1 | — | Jul 10 – Oct 16 | 70–90 |
| Yarrow | Feb 20 | Apr 24 | May 1 | — | Jul 10 – Oct 30 | 60–90 |
| Zinnia | Mar 27 | May 1 | May 1 | — | Jul 10 – Oct 16 | 60–70 |
Monthly Planting Guide for Miami County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Miami County.
Frequently Asked Questions
What planting zone is Miami County, IN?
Miami County is in USDA Hardiness Zone 6a. 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 Miami County, IN?
Based on 31 years of NOAA weather station data, the median last spring frost in Miami County falls around April 24. In 8 out of 10 years, last frost lands between April 9 and May 10 — a 31-day window of variability. Use May 10 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Miami County, IN?
The median first fall frost in Miami County arrives around October 17. In cold years it can arrive as early as October 4; in mild years as late as October 28. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Miami County?
Miami County has a frost-free growing season of approximately 176 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 1.35 days per decade.
What is the soil like in Miami County for gardening?
Miami County has predominantly Silt Loam soil with a pH range of 6–7.3 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Miami County?
Miami County has commercial agriculture that includes Corn, Soybeans, Hay, Wheat, Hogs. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Miami County a good location for home gardening?
Miami County scores 65/100 (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 Miami County Garden Planner — Free
A 22-page printable planner built for Miami County (Zone 6a). 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