Chaffee County, CO — Planting Guide
Chaffee County is in USDA Zone 5a. The average last spring frost is June 16 and the first fall frost is September 7, giving you a growing season of approximately 83 days.
At an elevation of 7,788 ft, Chaffee County receives approximately 18.6 in of rainfall annually. Summer highs average 86°F with winter lows around 12°F. The predominant soil type is Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 34 days year to year — ranging from May 22 in warm years to June 26 in cold years. The growing season is trending shorter by about 3.41 days per decade. Chaffee County scores 32/100 (Challenging) on the Microclimate Index.
🌡️ Zone
5a (-20°F to -15°F min)
❄️ Last Frost
June 16
🍂 First Frost
September 7
📅 Growing Season
83 days
⛰️ Elevation
7,788 ft
🌧️ Annual Rainfall
18.6 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.4 in | 6 days | — | None |
| Feb | 1.2 in | 6 days | — | None |
| Mar | 1.4 in | 7 days | — | None |
| Apr | 1.8 in | 8 days | 2.5 in | High |
| May | 2.4 in | 9 days | 1.9 in | High |
| Jun | 1.4 in | 5 days | 2.9 in | High |
| Jul | 1.8 in | 5 days | 2.5 in | High |
| Aug | 1.9 in | 7 days | 2.4 in | High |
| Sep | 1.4 in | 5 days | 2.9 in | High |
| Oct | 1.5 in | 6 days | 2.8 in | High |
| Nov | 1.3 in | 6 days | — | None |
| Dec | 1.1 in | 7 days | — | None |
Annual total: 18.6 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.
Chaffee County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.6
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) | Jun 26 | Sep 27 | 93 days |
| Cautious | Jun 22 | Sep 11 | 81 days |
| Average year | Jun 16 | Sep 7 | 83 days |
| Optimistic | Jun 10 | Aug 30 | 81 days |
| Aggressive (risky) | May 22 | Aug 17 | 87 days |
Not very — frost dates can vary by ±34 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 3.4 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Chaffee County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Chaffee 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 Chaffee County's climate and soil.
County Extension Office
Chaffee County Colorado State University Extension Extension Office
Phone: 970-491-6281
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 Chaffee County
Finding local nurseries & garden centers in Chaffee County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Chaffee 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 Chaffee County CO" or "garden center Chaffee 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 Chaffee County CO" or check your extension office and local parks department. Facebook groups like "Chaffee County Gardeners" or "Colorado 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.
Sunlight & Day Length
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
14.7 hours
Summer solstice daylight
Shortest Day
9.3 hours
Winter solstice daylight
Peak Sun Hours
10.6 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 | 9.6 hr | 5.4 hr | Short day |
| February | 10.5 hr | 5.8 hr | Short day |
| March | 11.7 hr | 7.4 hr | Short day |
| April | 13 hr | 7.6 hr | Neutral |
| May | 14.1 hr | 8.4 hr | Long day |
| June | 14.7 hr | 10.6 hr | Long day |
| July | 14.5 hr | 10 hr | Long day |
| August | 13.5 hr | 9.3 hr | Neutral |
| September | 12.2 hr | 9 hr | Neutral |
| October | 11 hr | 7.5 hr | Short day |
| November | 9.8 hr | 5.8 hr | Short day |
| December | 9.3 hr | 5.3 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Plant Warm Crops When
Soil reaches 60°F+
Soil rarely reaches 60°F — use black plastic mulch to warm soil.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
2 months
Short season — insulate pile or use indoor vermicomposting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 1°F | 7°F | ❄️ Dormant | ~36 weeks |
| Feb | 2°F | 7°F | ❄️ Dormant | ~36 weeks |
| Mar | 7°F | 12°F | ❄️ Dormant | ~36 weeks |
| Apr | 21°F | 21°F | ❄️ Dormant | ~36 weeks |
| May | 37°F | 33°F | ❄️ Dormant | ~36 weeks |
| Jun | 47°F | 42°F | 🐢 Slow | ~24 weeks |
| Jul | 55°F | 47°F | ♻️ Active | ~14 weeks |
| Aug | 55°F | 51°F | ♻️ Active | ~14 weeks |
| Sep | 47°F | 45°F | 🐢 Slow | ~24 weeks |
| Oct | 33°F | 37°F | ❄️ Dormant | ~36 weeks |
| Nov | 20°F | 27°F | ❄️ Dormant | ~36 weeks |
| Dec | 7°F | 16°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 Chaffee County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
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 | Moderate | May, Jun, Jul, Aug |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash bugs | Low | Jun, Jul, Aug |
| Tomato hornworms | Low | Jul, Aug |
| Cabbage loopers | Low | May, Jun, Jul, Aug |
| Slugs | Low | Apr, May, Jun |
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 Chaffee County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Jun 19 | Jul 13 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Jun 24 | Jun 29 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | May 18 | Jun 29 | ✓ 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 | Jul 14 | Aug 10 | — | 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 | Jul 9 | Jun 2 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Jul 23 | Jun 2 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 1 | May 26 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Jul 28 | May 26 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 18 | Jun 2 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 8 | Jun 2 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 16 mph Summer: 10 mph
Fall: 13 mph Winter: 15 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
6.6/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
High
Hilly terrain with 1,862 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
9,270 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
8 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 1,750 gal tank.
Legal Status
Limited
Your state has quantity limits on rainwater collection — check local regulations before installing large systems.
Best Collection Months
Apr, May, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Feb, Nov, 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 18.6 inches of rain per year
- A 1,000 sq ft roof can collect roughly 9,270 gallons annually
- Check CO state regulations — rainwater harvesting has quantity limits
- In your dry climate, every drop counts — consider a larger cistern system
- Position collection tanks in shade to reduce evaporation and algae growth
Soil & Growing Conditions in Chaffee County
Soil Type
Loam
Soil pH 6.7–7.6 · Well 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
83-day frost-free season
A short season means indoor starts are critical for warm-season crops. Prioritise cold-hardy, fast-maturing varieties and use row covers to extend autumn harvests.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
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 Chaffee County
106 vegetables that grow well in Zone 5a with planting dates for Chaffee County.
Show all 106 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | May 12 | Jun 23 | Jun 30 | Sep 22 – Oct 27 | 80–100 |
| Amaranth | Apr 21 | Jun 23 | Jun 30 | Sep 29 – Nov 17 | 90–120 |
| Arugula | May 12 | Jun 2 | Jun 16 | Jul 21 – Sep 22 | 30–50 |
| Asparagus | — | — | Jun 30 | — | 730–1095 |
| Beets | — | Jun 2 | — | Jul 28 – Aug 25 | 50–70 |
| Belgian Endive | May 12 | Jun 2 | Jun 16 | Oct 6 – Dec 1 | 110–150 |
| Bitter Melon | Apr 21 | Jun 23 | Jun 30 | Sep 1 – Oct 13 | 60–90 |
| Black Beans | — | Jun 23 | — | Sep 22 – Nov 10 | 90–120 |
| Bok Choy | May 12 | Jun 2 | Jun 16 | Jul 28 – Sep 1 | 40–60 |
| Broccoli | May 12 | Jun 2 | Jun 16 | Aug 18 – Sep 29 | 60–90 |
| Broccoli Rabe | May 12 | Jun 2 | Jun 16 | Jul 28 – Sep 1 | 40–60 |
| Brussels Sprouts | May 12 | Jun 2 | Jun 16 | Sep 15 – Nov 10 | 90–130 |
| Butternut Squash | May 12 | Jun 23 | Jun 30 | Sep 29 – Nov 3 | 85–110 |
| Cabbage | May 12 | Jun 2 | Jun 16 | Aug 18 – Oct 13 | 60–100 |
| Calabash | Apr 21 | Jun 23 | Jun 30 | Sep 22 – Nov 17 | 80–120 |
| Carrots | — | Jun 2 | — | Aug 4 – Sep 8 | 60–80 |
| Cauliflower | May 12 | Jun 2 | Jun 16 | Aug 11 – Oct 13 | 55–100 |
| Celeriac | May 12 | Jun 2 | Jun 16 | Sep 29 – Nov 3 | 100–120 |
| Celery | May 12 | Jun 2 | Jun 16 | Sep 8 – Nov 3 | 80–120 |
| Celtuce | May 12 | Jun 2 | Jun 16 | Aug 18 – Sep 29 | 60–90 |
| Chard | May 12 | Jun 2 | Jun 16 | Aug 11 – Sep 29 | 50–60 |
| Chickpeas | May 12 | Jun 2 | Jun 16 | Sep 8 – Oct 20 | 80–110 |
| Chicory | May 12 | Jun 2 | Jun 16 | Aug 18 – Sep 29 | 60–85 |
| Chinese Cabbage | May 12 | Jun 2 | Jun 16 | Aug 11 – Sep 8 | 50–70 |
| Christmas Lima Beans | Apr 21 | Jun 23 | Jun 30 | Sep 22 – Oct 27 | 80–100 |
| Collard Greens | May 12 | Jun 2 | Jun 16 | Aug 11 – Oct 13 | 55–75 |
| Corn | — | Jun 23 | — | Aug 25 – Oct 20 | 60–100 |
| Cowpeas | — | Jun 23 | — | Aug 25 – Oct 6 | 60–90 |
| Cress | May 12 | Jun 2 | Jun 16 | Jun 30 – Jul 21 | 14–21 |
| Crookneck Squash | May 12 | Jun 23 | Jun 30 | Aug 18 – Sep 15 | 45–60 |
| Crosne | — | Jun 2 | — | Nov 3 – Nov 17 | 150–200 |
| Cucumber | May 12 | Jun 23 | Jun 30 | Aug 25 – Oct 20 | 50–70 |
| Daikon | — | Jun 2 | — | Jul 28 – Aug 25 | 50–70 |
| Delicata Squash | May 12 | Jun 23 | Jun 30 | Sep 22 – Oct 27 | 80–100 |
| Edamame | — | Jun 23 | — | Sep 8 – Oct 20 | 75–100 |
| Eggplant | Apr 7 | Jun 23 | Jun 30 | Sep 8 – Nov 10 | 65–85 |
| Endive | May 12 | Jun 2 | Jun 16 | Aug 4 – Sep 8 | 45–65 |
| Escarole | May 12 | Jun 2 | Jun 16 | Aug 11 – Sep 8 | 50–70 |
| Fava Beans | May 12 | Jun 2 | Jun 16 | Sep 1 – Oct 13 | 75–100 |
| Fennel | Apr 21 | Jun 23 | Jun 30 | Sep 1 – Oct 13 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | Jun 23 | — | Aug 18 – Oct 13 | 50–65 |
| Horseradish | — | — | Jun 30 | Nov 3 – Dec 15 | 120–180 |
| Hot Peppers | Apr 7 | Jun 23 | Jun 30 | Sep 8 – Dec 15 | 70–120 |
| Hubbard Squash | May 12 | Jun 23 | Jun 30 | Oct 13 – Nov 17 | 100–120 |
| Kabocha | May 12 | Jun 23 | Jun 30 | Sep 29 – Oct 27 | 85–100 |
| Kai Lan | May 12 | Jun 2 | Jun 16 | Aug 4 – Sep 1 | 45–60 |
| Kale | May 12 | Jun 2 | Jun 16 | Aug 11 – Oct 6 | 50–70 |
| Kidney Beans | — | Jun 23 | — | Sep 22 – Oct 27 | 85–110 |
| Kohlrabi | May 12 | Jun 2 | Jun 16 | Aug 4 – Sep 8 | 45–65 |
| Komatsuna | May 12 | Jun 2 | Jun 16 | Jul 21 – Aug 25 | 35–50 |
| Leeks | May 12 | Jun 2 | Jun 16 | Sep 15 – Dec 1 | 90–150 |
| Lentils | May 12 | Jun 2 | Jun 16 | Sep 8 – Oct 20 | 80–110 |
| Lettuce | May 12 | Jun 2 | Jun 16 | Jul 21 – Sep 29 | 30–60 |
| Lima Beans | — | Jun 23 | — | Aug 25 – Oct 6 | 60–90 |
| Mache | May 12 | Jun 2 | Jun 16 | Jul 28 – Sep 1 | 40–60 |
| Melon | May 12 | Jun 23 | Jun 30 | Sep 8 – Oct 27 | 70–100 |
| Microgreens | May 12 | Jun 2 | Jun 16 | Jun 23 – Jul 21 | 7–21 |
| Mitsuba | May 12 | Jun 2 | Jun 9 | Aug 4 – Sep 29 | 50–70 |
| Mizuna | May 12 | Jun 2 | Jun 16 | Jul 21 – Aug 18 | 30–45 |
| Mustard Greens | May 12 | Jun 2 | Jun 16 | Jul 21 – Sep 22 | 30–50 |
| Napa Cabbage | May 12 | Jun 2 | Jun 16 | Aug 11 – Sep 15 | 55–75 |
| New Zealand Spinach | Apr 21 | Jun 23 | Jun 30 | Aug 25 – Sep 22 | 55–70 |
| Okra | Apr 21 | Jun 23 | Jun 30 | Aug 25 – Oct 20 | 50–65 |
| Onion | May 12 | Jun 2 | Jun 16 | Sep 15 – Nov 3 | 90–120 |
| Pac Choi | May 12 | Jun 2 | Jun 16 | Jul 28 – Aug 25 | 40–55 |
| Parsnip | — | Jun 2 | — | Sep 15 – Oct 27 | 100–130 |
| Patty Pan Squash | May 12 | Jun 23 | Jun 30 | Aug 18 – Sep 15 | 45–60 |
| Peas | May 12 | Jun 2 | Jun 16 | Aug 11 – Oct 6 | 55–70 |
| Peppers | Apr 7 | Jun 23 | Jun 30 | Sep 1 – Nov 10 | 60–90 |
| Pole Beans | Apr 21 | Jun 23 | Jun 30 | Aug 25 – Oct 20 | 55–70 |
| Potatoes | Apr 21 | Jun 23 | Jun 30 | Sep 8 – Nov 17 | 70–120 |
| Pumpkin | May 12 | Jun 23 | Jun 30 | Sep 29 – Nov 17 | 85–120 |
| Purslane | May 12 | Jun 2 | Jun 16 | Jul 28 – Sep 1 | 40–60 |
| Radicchio | May 12 | Jun 2 | Jun 16 | Aug 18 – Sep 22 | 60–80 |
| Radish | — | Jun 2 | — | Jun 30 – Jul 21 | 22–35 |
| Rhubarb | — | — | Jul 7 | — | 365–730 |
| Romanesco | May 12 | Jun 2 | Jun 16 | Sep 1 – Oct 13 | 75–100 |
| Rutabaga | — | Jun 2 | — | Aug 25 – Sep 29 | 80–100 |
| Salsify | — | Jun 2 | — | Sep 15 – Oct 27 | 100–130 |
| Savoy Cabbage | May 12 | Jun 2 | Jun 16 | Aug 25 – Oct 20 | 70–110 |
| Scallions | May 12 | Jun 2 | Jun 16 | Aug 11 – Sep 8 | 50–70 |
| Scarlet Runner Beans | Apr 21 | Jun 23 | Jun 30 | Sep 1 – Oct 6 | 60–80 |
| Shallot | May 12 | Jun 2 | Jun 16 | Sep 15 – Nov 3 | 90–120 |
| Shiso | Apr 28 | Jun 23 | Jun 30 | Aug 25 – Oct 20 | 50–70 |
| Snap Peas | Apr 21 | Jun 23 | Jun 30 | Aug 25 – Oct 20 | 55–70 |
| Snow Peas | May 12 | Jun 2 | Jun 16 | Aug 11 – Oct 6 | 50–65 |
| Soybeans | — | Jun 23 | — | Sep 15 – Nov 10 | 80–120 |
| Spaghetti Squash | May 12 | Jun 23 | Jun 30 | Sep 29 – Oct 27 | 85–100 |
| Spinach | May 12 | Jun 2 | Jun 16 | Jul 21 – Sep 22 | 35–50 |
| Squash (Summer) | May 12 | Jun 23 | Jun 30 | Aug 18 – Oct 20 | 45–65 |
| Squash (Winter) | May 12 | Jun 23 | Jun 30 | Sep 22 – Nov 17 | 80–120 |
| Sunchoke | — | — | Jun 30 | Oct 20 – Dec 15 | 110–150 |
| Sunflower | Apr 21 | Jun 23 | Jun 30 | Sep 8 – Oct 27 | 70–100 |
| Sweet Corn | — | Jun 23 | — | Aug 25 – Oct 6 | 60–90 |
| Sweet Potatoes | Apr 21 | Jun 23 | Jun 30 | Sep 29 – Nov 17 | 90–120 |
| Tatsoi | May 12 | Jun 2 | Jun 16 | Jul 21 – Aug 25 | 35–50 |
| Tomatillo | Apr 21 | Jun 23 | Jun 30 | Sep 1 – Nov 10 | 60–85 |
| Tomatoes | Apr 21 | Jun 23 | Jun 30 | Sep 1 – Nov 10 | 60–85 |
| Turnip | — | Jun 2 | — | Jul 14 – Aug 18 | 40–60 |
| Watercress | May 12 | Jun 2 | Jun 16 | Jul 28 – Sep 1 | 40–60 |
| Watermelon | May 12 | Jun 23 | Jun 30 | Sep 8 – Oct 27 | 70–100 |
| Wax Beans | — | Jun 23 | — | Aug 18 – Oct 13 | 50–65 |
| Winter Melon | Apr 21 | Jun 23 | Jun 30 | Sep 29 – Nov 17 | 90–120 |
| Yard Long Beans | Apr 21 | Jun 23 | Jun 30 | Aug 25 – Oct 6 | 55–80 |
| Zucchini | May 12 | Jun 23 | Jun 30 | Aug 18 – Oct 13 | 45–60 |
🍓 Fruits to Grow in Chaffee County
27 fruits that grow well in Zone 5a with planting dates for Chaffee County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jul 7 | Oct 6 – Dec 22 | 90–180 |
| Aronia | — | — | Jul 7 | — | 730–1095 |
| Blackberries | — | — | Jul 7 | — | 365–730 |
| Blueberries | — | — | Jul 7 | — | 730–1095 |
| Boysenberries | — | — | Jul 7 | — | 365–730 |
| Cantaloupe | — | — | Jul 7 | Sep 15 – Oct 20 | 70–90 |
| Che Fruit | — | — | Jul 7 | — | 1095–1825 |
| Cranberries | — | — | Jul 7 | — | 730–1095 |
| Currants | — | — | Jul 7 | — | 730–1095 |
| Elderberries | — | — | Jul 7 | — | 730–1095 |
| Goji Berries | — | — | Jul 7 | — | 730–1095 |
| Gooseberries | — | — | Jul 7 | — | 730–1095 |
| Grapes | — | — | Jul 7 | — | 730–1095 |
| Ground Cherry | — | — | Jul 7 | Sep 15 – Nov 10 | 65–80 |
| Hardy Kiwi | — | — | Jul 7 | — | 1095–1825 |
| Haskaps | — | — | Jul 7 | — | 730–1095 |
| Honeydew | — | — | Jul 7 | Sep 29 – Nov 10 | 80–110 |
| Jostaberry | — | — | Jul 7 | — | 730–1095 |
| Lingonberries | — | — | Jul 7 | — | 730–1095 |
| Medlar | — | — | Jul 7 | — | 1095–1825 |
| Mulberries | — | — | Jul 7 | — | 730–1825 |
| Pawpaw | — | — | Jul 7 | — | 1095–2555 |
| Persimmon | — | — | Jul 7 | — | 1095–2555 |
| Quince | — | — | Jul 7 | — | 1095–1825 |
| Raspberries | — | — | Jul 7 | — | 365–730 |
| Serviceberries | — | — | Jul 7 | — | 730–1095 |
| Strawberries | — | — | Jul 7 | Oct 6 – Dec 22 | 90–365 |
🌿 Herbs to Grow in Chaffee County
37 herbs that grow well in Zone 5a with planting dates for Chaffee County.
Show all 37 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | May 12 | Jun 2 | Jun 9 | — | 365–730 |
| Anise | May 12 | Jun 2 | Jun 9 | Sep 8 – Nov 24 | 90–120 |
| Basil | Apr 28 | Jun 23 | Jun 30 | Aug 25 – Oct 27 | 50–75 |
| Bee Balm | — | — | Jun 23 | Sep 22 – Dec 8 | 90–120 |
| Borage | May 12 | Jun 2 | Jun 9 | Aug 4 – Sep 22 | 50–60 |
| Caraway | May 12 | Jun 2 | Jun 9 | — | 365–450 |
| Catnip | — | — | Jun 23 | Aug 25 – Oct 27 | 60–80 |
| Chamomile | May 12 | Jun 2 | Jun 9 | Aug 11 – Oct 20 | 60–90 |
| Chervil | May 12 | Jun 2 | Jun 9 | Jul 21 – Sep 22 | 40–60 |
| Chives | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Cilantro | May 12 | Jun 2 | Jun 9 | Jul 21 – Sep 22 | 40–60 |
| Comfrey | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Cumin | May 12 | Jun 2 | Jun 9 | Sep 22 – Nov 24 | 100–120 |
| Dill | May 12 | Jun 2 | Jun 9 | Jul 21 – Sep 22 | 40–60 |
| Echinacea | — | — | Jun 23 | Oct 27 – Dec 8 | 120–180 |
| Epazote | Apr 28 | Jun 23 | Jun 30 | Aug 18 – Oct 13 | 45–60 |
| Fennel (herb) | May 12 | Jun 2 | Jun 9 | Aug 11 – Oct 20 | 60–90 |
| Feverfew | — | — | Jun 23 | Sep 22 – Dec 8 | 90–120 |
| Garlic Chives | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Horehound | — | — | Jun 23 | Sep 8 – Nov 3 | 75–90 |
| Hyssop | — | — | Jun 23 | Sep 1 – Nov 3 | 70–90 |
| Lavender | — | — | Jun 23 | Sep 22 – Dec 8 | 90–200 |
| Lemon Balm | — | — | Jun 23 | Aug 25 – Oct 13 | 60–70 |
| Lemon Thyme | — | — | Jun 23 | Sep 1 – Nov 3 | 70–90 |
| Lovage | — | — | Jun 23 | Sep 1 – Nov 3 | 70–90 |
| Mint | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Oregano | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Parsley | May 12 | Jun 2 | Jun 9 | Aug 11 – Oct 13 | 60–80 |
| Rue | — | — | Jun 23 | Sep 1 – Nov 3 | 70–90 |
| Sage | — | — | Jun 23 | Sep 8 – Nov 3 | 75–90 |
| Savory | — | — | Jun 23 | Aug 18 – Oct 13 | 50–70 |
| Sorrel | May 12 | Jun 2 | Jun 9 | Jul 21 – Sep 22 | 40–60 |
| Tarragon | — | — | Jun 23 | Aug 25 – Nov 3 | 60–90 |
| Thai Basil | Apr 28 | Jun 23 | Jun 30 | Aug 25 – Oct 27 | 50–75 |
| Thyme | — | — | Jun 23 | Sep 1 – Nov 3 | 70–90 |
| Valerian | — | — | Jun 23 | Oct 27 – Dec 8 | 120–180 |
| Yarrow | — | — | Jun 23 | Sep 22 – Dec 8 | 90–120 |
Monthly Planting Guide for Chaffee County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Chaffee County.
Frequently Asked Questions
What planting zone is Chaffee County, CO?
Chaffee County is in USDA Hardiness Zone 5a. 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 Chaffee County, CO?
Based on 31 years of NOAA weather station data, the median last spring frost in Chaffee County falls around June 16. In 8 out of 10 years, last frost lands between May 22 and June 26 — a 34-day window of variability. Use June 26 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Chaffee County, CO?
The median first fall frost in Chaffee County arrives around September 7. In cold years it can arrive as early as August 17; in mild years as late as September 27. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Chaffee County?
Chaffee County has a frost-free growing season of approximately 83 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost. Climate records show the growing season is trending shorter by about 3.41 days per decade.
What is the soil like in Chaffee County for gardening?
Chaffee County has predominantly Loam soil with a pH range of 6.7–7.6 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Chaffee County?
Chaffee County has commercial agriculture that includes Cattle, Hay, Wheat. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Chaffee County a good location for home gardening?
Chaffee County scores 32/100 (Challenging) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Gardening here benefits from close attention to frost timing and season extension due to the challenging microclimate factors.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Chaffee County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.
