Thompson, UT — Planting Guide for June
Free PDF, personalized for your town's frost dates & climate. Drop your email — we'll send the link.
June in the garden — Thompson, UT
Each item below is timed to Thompson, UT's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Begin indoor sowing: basil, peppers, and pole beans
Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.
-
Start harvesting basil, carrots, and cucumber
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
July will be here before you know it — start on
- First harvests: basil, carrots, and cucumber
Thompson gardens in a dry climate (only 4" annual precipitation). Watering strategy matters more here than in most of the country — drip irrigation, deep mulching, and morning watering aren't optional, they're table stakes. The flip side: pest and disease pressure are far lower than in humid regions, and your soil temperatures climb fast in spring so you can plant heat-lovers earlier than the zone map suggests.
Soils trend Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.
Thompson averages 36.3 drought weeks per year (US Drought Monitor, 2000–present, trend stable). Treat irrigation as a year-round system, not a summer add-on.
🌡️ USDA Zone
6b (-5°F to 0°F min)
❄️ Avg. Last Frost
April 19
🍂 Avg. First Frost
October 13
📅 Growing Season
177 days
🌧️ Climate
Arid 4.2" annual
💨 Wind
Moderate 6.2 mph avg
🥶 Frost Tier
Regular 0% frost-free years
🏜️ Drought
36.3 wk/yr trend stable
📍 ZIP Codes
1 ZIP
Monthly Watering Calendar for Thompson
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 Thompson, the watering question isn't "how often" — it's "is the soil moist 4 inches down?" Stick a finger in. Dry? Water. Damp? Wait. The 4" annual rainfall is just the starting context.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.6 in | 6 days | — | None |
| Feb | 1.3 in | 5 days | — | None |
| Mar | 2.2 in | 6 days | 2.1 in | High |
| Apr | 2.2 in | 7 days | 2.1 in | High |
| May | 2.9 in | 7 days | 1.4 in | Moderate |
| Jun | 1.5 in | 4 days | 2.8 in | High |
| Jul | 2.4 in | 5 days | 1.9 in | High |
| Aug | 2.1 in | 6 days | 2.2 in | High |
| Sep | 1.8 in | 6 days | 2.5 in | High |
| Oct | 2.1 in | 5 days | 2.2 in | High |
| Nov | 1.6 in | 6 days | — | None |
| Dec | 1.3 in | 6 days | — | None |
Annual total: 23 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.
Thompson Soil Profile
Soil Type
Loam
Soil pH
6.4-7.9
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 7 | Oct 30 | 176 days |
| Cautious | Apr 28 | Oct 21 | 176 days |
| Average year | Apr 19 | Oct 13 | 177 days |
| Optimistic | Apr 13 | Oct 5 | 175 days |
| Aggressive (risky) | Apr 6 | Sep 26 | 173 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 longer here (about 1.6 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Grand County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Grand 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 Grand County's climate and soil.
County Extension Office
Grand County Utah State University Extension Extension Office
Phone: 435-797-2200
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 Grand County
Finding local nurseries & garden centers in Grand County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Grand 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 Grand County UT" or "garden center Grand 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 Grand County UT" or check your extension office and local parks department. Facebook groups like "Grand County Gardeners" or "Utah 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 Thompson
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why it matters: Onion varieties are sold by "short-day," "intermediate-day," and "long-day." Thompson's latitude determines which to buy — and getting it wrong is the difference between baseball-sized bulbs and marbles.
Longest Day
14.7 hours
Summer solstice daylight
Shortest Day
9.3 hours
Winter solstice daylight
Peak Sun Hours
10.1 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 | 5.2 hr | Short day |
| February | 10.5 hr | 6 hr | Short day |
| March | 11.7 hr | 6.9 hr | Short day |
| April | 13 hr | 7.2 hr | Neutral |
| May | 14.1 hr | 9 hr | Long day |
| June | 14.7 hr | 10.1 hr | Long day |
| July | 14.5 hr | 9.8 hr | Long day |
| August | 13.5 hr | 8.8 hr | Neutral |
| September | 12.2 hr | 8.7 hr | Neutral |
| October | 11 hr | 7 hr | Short day |
| November | 9.8 hr | 5.4 hr | Short day |
| December | 9.3 hr | 4.9 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Thompson
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why this matters: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Thompson's monthly soil curve maps these windows to actual months.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jul through Aug.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
4 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 | 15°F | 23°F | ❄️ Dormant | ~36 weeks |
| Feb | 16°F | 21°F | ❄️ Dormant | ~36 weeks |
| Mar | 25°F | 26°F | ❄️ Dormant | ~36 weeks |
| Apr | 35°F | 34°F | ❄️ Dormant | ~36 weeks |
| May | 49°F | 44°F | 🐢 Slow | ~24 weeks |
| Jun | 57°F | 52°F | ♻️ Active | ~14 weeks |
| Jul | 68°F | 59°F | 🔥 Peak | ~8 weeks |
| Aug | 65°F | 62°F | 🔥 Peak | ~8 weeks |
| Sep | 59°F | 60°F | ♻️ Active | ~14 weeks |
| Oct | 48°F | 50°F | 🐢 Slow | ~24 weeks |
| Nov | 34°F | 41°F | ❄️ Dormant | ~36 weeks |
| Dec | 21°F | 30°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 Thompson
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
What this means for you: High pest pressure means weekly inspection. Low pest pressure means monthly. The score tells you which routine to set up before you have a problem.
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 | 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 | Low | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
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 Thompson
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Why this matters: You don't need a farm to use cover crops. A 4x8 raised bed accepts cover crops just as well as a half-acre. Thompson's climate determines the calendar; the principle is universal.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 29 | Aug 18 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Apr 23 | Aug 18 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 20 | Aug 18 | ✓ 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 8 | Sep 15 | — | 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 17 | Mar 29 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 3 | Mar 29 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 3 | Mar 29 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 1 | Mar 29 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 12 | Apr 5 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 17 | Mar 29 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 4 | Apr 5 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Thompson
What this means for you: Plants lose water through tiny leaf pores. Wind accelerates that loss dramatically — a 15 mph day can double a calm day's irrigation need. Thompson's 6.2 mph background wind is something to design around, not against. Windbreaks made of perennial shrubs save more water than any drip system.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 15 mph Summer: 11 mph
Fall: 12 mph Winter: 14 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
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
Moderate
Some terrain variation (891 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Thompson
How much water you can collect, when to collect it, and what size system you need for your garden.
Quick context: A single rain barrel under a downspout catches 50 gallons in a 0.5" storm. Thompson's 4" annual rainfall means even modest harvesting systems quickly amortize their cost in water savings.
Annual Collection
11,463 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
7 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
Mar, Apr, May, Jul
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Feb, Jun, 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 23.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 11,463 gallons annually
- Check UT state regulations — rainwater harvesting has quantity limits
- Stock up on stored water before your dry season (Feb, Jun, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
🥬 Vegetables to Grow in Thompson
107 vegetables matched to Zone 6b with planting dates calibrated for Thompson.
Show all 107 vegetables with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 15 | Apr 26 | May 3 | — | Jul 26 – Aug 30 | 80–100 |
| Amaranth | Feb 22 | Apr 26 | May 3 | — | Aug 2 – Sep 20 | 90–120 |
| Arugula | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jul 26 | 30–50 |
| Asparagus | — | — | May 3 | — | — | 730–1095 |
| Beets | — | Apr 5 | — | Aug 4 | May 31 – Jun 28 | 50–70 |
| Belgian Endive | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Aug 9 – Oct 4 | 110–150 |
| Bitter Melon | Feb 22 | Apr 26 | May 3 | — | Jul 5 – Aug 16 | 60–90 |
| Black Beans | — | Apr 26 | — | — | Jul 26 – Sep 13 | 90–120 |
| Bok Choy | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jul 5 | 40–60 |
| Broccoli | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 21 – Aug 2 | 60–90 |
| Broccoli Rabe | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jul 5 | 40–60 |
| Brussels Sprouts | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 19 – Sep 13 | 90–130 |
| Butternut Squash | Mar 15 | Apr 26 | May 3 | — | Aug 2 – Sep 6 | 85–110 |
| Cabbage | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 21 – Aug 16 | 60–100 |
| Calabash | Feb 22 | Apr 26 | May 3 | — | Jul 26 – Sep 20 | 80–120 |
| Carrots | — | Apr 5 | — | Aug 4 | Jun 7 – Jul 12 | 60–80 |
| Cauliflower | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 16 | 55–100 |
| Celeriac | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Aug 2 – Sep 6 | 100–120 |
| Celery | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 12 – Sep 6 | 80–120 |
| Celtuce | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 21 – Aug 2 | 60–90 |
| Chard | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 2 | 50–60 |
| Chickpeas | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 12 – Aug 23 | 80–110 |
| Chicory | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 21 – Aug 2 | 60–85 |
| Chinese Cabbage | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Jul 12 | 50–70 |
| Christmas Lima Beans | Feb 22 | Apr 26 | May 3 | — | Jul 26 – Aug 30 | 80–100 |
| Collard Greens | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 16 | 55–75 |
| Corn | — | Apr 26 | — | — | Jun 28 – Aug 23 | 60–100 |
| Cowpeas | — | Apr 26 | — | — | Jun 28 – Aug 9 | 60–90 |
| Cress | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 3 – May 24 | 14–21 |
| Crookneck Squash | Mar 15 | Apr 26 | May 3 | — | Jun 21 – Jul 19 | 45–60 |
| Crosne | — | Apr 5 | — | Aug 4 | Sep 6 – Oct 18 | 150–200 |
| Cucumber | Mar 15 | Apr 26 | May 3 | — | Jun 28 – Aug 23 | 50–70 |
| Daikon | — | Apr 5 | — | Aug 4 | May 31 – Jun 28 | 50–70 |
| Delicata Squash | Mar 15 | Apr 26 | May 3 | — | Jul 26 – Aug 30 | 80–100 |
| Edamame | — | Apr 26 | — | — | Jul 12 – Aug 23 | 75–100 |
| Eggplant | Feb 8 | Apr 26 | May 3 | — | Jul 12 – Sep 13 | 65–85 |
| Endive | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 7 – Jul 12 | 45–65 |
| Escarole | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Jul 12 | 50–70 |
| Fava Beans | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 5 – Aug 16 | 75–100 |
| Fennel | Feb 22 | Apr 26 | May 3 | — | Jul 5 – Aug 16 | 60–90 |
| Garlic | — | — | — | Sep 1 | Dec 1 – Mar 16 | 90–240 |
| Green Beans | — | Apr 26 | — | — | Jun 21 – Aug 16 | 50–65 |
| Horseradish | — | — | May 3 | — | Sep 6 – Nov 15 | 120–180 |
| Hot Peppers | Feb 8 | Apr 26 | May 3 | — | Jul 12 – Oct 18 | 70–120 |
| Hubbard Squash | Mar 15 | Apr 26 | May 3 | — | Aug 16 – Sep 20 | 100–120 |
| Kabocha | Mar 15 | Apr 26 | May 3 | — | Aug 2 – Aug 30 | 85–100 |
| Kai Lan | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 7 – Jul 5 | 45–60 |
| Kale | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 9 | 50–70 |
| Kidney Beans | — | Apr 26 | — | — | Jul 26 – Aug 30 | 85–110 |
| Kohlrabi | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 7 – Jul 12 | 45–65 |
| Komatsuna | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jun 28 | 35–50 |
| Leeks | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 19 – Oct 4 | 90–150 |
| Lentils | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 12 – Aug 23 | 80–110 |
| Lettuce | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Aug 2 | 30–60 |
| Lima Beans | — | Apr 26 | — | — | Jun 28 – Aug 9 | 60–90 |
| Loofah | Feb 22 | Apr 26 | May 3 | — | Aug 16 – Oct 18 | 100–150 |
| Luffa | Feb 22 | Apr 26 | May 3 | — | Aug 2 – Oct 18 | 90–150 |
| Mache | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jul 5 | 40–60 |
| Melon | Mar 15 | Apr 26 | May 3 | — | Jul 12 – Aug 30 | 70–100 |
| Microgreens | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Apr 26 – May 24 | 7–21 |
| Mitsuba | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jun 7 – Aug 2 | 50–70 |
| Mizuna | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jun 21 | 30–45 |
| Mustard Greens | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jul 26 | 30–50 |
| Napa Cabbage | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Jul 19 | 55–75 |
| New Zealand Spinach | Feb 22 | Apr 26 | May 3 | — | Jun 28 – Jul 26 | 55–70 |
| Okra | Feb 22 | Apr 26 | May 3 | — | Jun 28 – Aug 23 | 50–65 |
| Onion | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 19 – Sep 6 | 90–120 |
| Pac Choi | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jun 28 | 40–55 |
| Parsnip | — | Apr 5 | — | Aug 4 | Jul 19 – Aug 30 | 100–130 |
| Patty Pan Squash | Mar 15 | Apr 26 | May 3 | — | Jun 21 – Jul 19 | 45–60 |
| Peas | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 9 | 55–70 |
| Peppers | Feb 8 | Apr 26 | May 3 | — | Jul 5 – Sep 13 | 60–90 |
| Pole Beans | Feb 22 | Apr 26 | May 3 | — | Jun 28 – Aug 23 | 55–70 |
| Potatoes | Feb 22 | Apr 26 | May 3 | — | Jul 12 – Sep 20 | 70–120 |
| Pumpkin | Mar 15 | Apr 26 | May 3 | — | Aug 2 – Sep 20 | 85–120 |
| Purslane | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jul 5 | 40–60 |
| Radicchio | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 21 – Jul 26 | 60–80 |
| Radish | — | Apr 5 | — | Aug 4 | May 3 – May 24 | 22–35 |
| Rhubarb | — | — | May 10 | — | — | 365–730 |
| Romanesco | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 5 – Aug 16 | 75–100 |
| Rutabaga | — | Apr 5 | — | Aug 4 | Jun 28 – Aug 2 | 80–100 |
| Salsify | — | Apr 5 | — | Aug 4 | Jul 19 – Aug 30 | 100–130 |
| Savoy Cabbage | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 28 – Aug 23 | 70–110 |
| Scallions | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Jul 12 | 50–70 |
| Scarlet Runner Beans | Feb 22 | Apr 26 | May 3 | — | Jul 5 – Aug 9 | 60–80 |
| Shallot | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jul 19 – Sep 6 | 90–120 |
| Shiso | Mar 1 | Apr 26 | May 3 | — | Jun 28 – Aug 23 | 50–70 |
| Snap Peas | Feb 22 | Apr 26 | May 3 | — | Jun 28 – Aug 23 | 55–70 |
| Snow Peas | Mar 15 | Apr 5 | Apr 19 | Aug 4 | Jun 14 – Aug 9 | 50–65 |
| Soybeans | — | Apr 26 | — | — | Jul 19 – Sep 13 | 80–120 |
| Spaghetti Squash | Mar 15 | Apr 26 | May 3 | — | Aug 2 – Aug 30 | 85–100 |
| Spinach | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jul 26 | 35–50 |
| Squash (Summer) | Mar 15 | Apr 26 | May 3 | — | Jun 21 – Aug 23 | 45–65 |
| Squash (Winter) | Mar 15 | Apr 26 | May 3 | — | Jul 26 – Sep 20 | 80–120 |
| Sunchoke | — | — | May 3 | — | Aug 23 – Oct 18 | 110–150 |
| Sweet Corn | — | Apr 26 | — | — | Jun 28 – Aug 9 | 60–90 |
| Sweet Potatoes | Feb 22 | Apr 26 | May 3 | — | Aug 2 – Sep 20 | 90–120 |
| Tatsoi | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 24 – Jun 28 | 35–50 |
| Tomatillo | Feb 22 | Apr 26 | May 3 | — | Jul 5 – Sep 13 | 60–85 |
| Tomatoes | Feb 22 | Apr 26 | May 3 | — | Jul 5 – Sep 13 | 60–85 |
| Turnip | — | Apr 5 | — | Aug 4 | May 17 – Jun 21 | 40–60 |
| Watercress | Mar 15 | Apr 5 | Apr 19 | Aug 4 | May 31 – Jul 5 | 40–60 |
| Watermelon | Mar 15 | Apr 26 | May 3 | — | Jul 12 – Aug 30 | 70–100 |
| Wax Beans | — | Apr 26 | — | — | Jun 21 – Aug 16 | 50–65 |
| Winter Melon | Feb 22 | Apr 26 | May 3 | — | Aug 2 – Sep 20 | 90–120 |
| Yard Long Beans | Feb 22 | Apr 26 | May 3 | — | Jun 28 – Aug 9 | 55–80 |
| Zucchini | Mar 15 | Apr 26 | May 3 | — | Jun 21 – Aug 16 | 45–60 |
🍓 Fruits to Grow in Thompson
27 fruits matched to Zone 6b with planting dates calibrated for Thompson.
Show all 27 fruits with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 10 | — | Aug 9 – Nov 22 | 90–180 |
| Aronia | — | — | May 10 | — | — | 730–1095 |
| Blackberries | — | — | May 10 | — | — | 365–730 |
| Blueberries | — | — | May 10 | — | — | 730–1095 |
| Boysenberries | — | — | May 10 | — | — | 365–730 |
| Cantaloupe | — | — | May 10 | — | Jul 19 – Aug 23 | 70–90 |
| Che Fruit | — | — | May 10 | — | — | 1095–1825 |
| Cranberries | — | — | May 10 | — | — | 730–1095 |
| Currants | — | — | May 10 | — | — | 730–1095 |
| Elderberries | — | — | May 10 | — | — | 730–1095 |
| Goji Berries | — | — | May 10 | — | — | 730–1095 |
| Gooseberries | — | — | May 10 | — | — | 730–1095 |
| Grapes | — | — | May 10 | — | — | 730–1095 |
| Ground Cherry | — | — | May 10 | — | Jul 19 – Sep 13 | 65–80 |
| Hardy Kiwi | — | — | May 10 | — | — | 1095–1825 |
| Haskaps | — | — | May 10 | — | — | 730–1095 |
| Honeydew | — | — | May 10 | — | Aug 2 – Sep 13 | 80–110 |
| Jostaberry | — | — | May 10 | — | — | 730–1095 |
| Lingonberries | — | — | May 10 | — | — | 730–1095 |
| Medlar | — | — | May 10 | — | — | 1095–1825 |
| Mulberries | — | — | May 10 | — | — | 730–1825 |
| Pawpaw | — | — | May 10 | — | — | 1095–2555 |
| Persimmon | — | — | May 10 | — | — | 1095–2555 |
| Quince | — | — | May 10 | — | — | 1095–1825 |
| Raspberries | — | — | May 10 | — | — | 365–730 |
| Serviceberries | — | — | May 10 | — | — | 730–1095 |
| Strawberries | — | — | May 10 | — | Aug 9 – Nov 22 | 90–365 |
🌿 Herbs to Grow in Thompson
35 herbs matched to Zone 6b with planting dates calibrated for Thompson.
Show all 35 herbs with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 15 | Apr 5 | Apr 12 | Aug 4 | — | 365–730 |
| Anise | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jul 12 – Sep 27 | 90–120 |
| Basil | Mar 1 | Apr 26 | May 3 | — | Jun 28 – Aug 30 | 50–75 |
| Bee Balm | — | — | Apr 26 | — | Jul 26 – Oct 11 | 90–120 |
| Borage | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jun 7 – Jul 26 | 50–60 |
| Caraway | Mar 15 | Apr 5 | Apr 12 | Aug 4 | — | 365–450 |
| Catnip | — | — | Apr 26 | — | Jun 28 – Aug 30 | 60–80 |
| Chamomile | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jun 14 – Aug 23 | 60–90 |
| Chervil | Mar 15 | Apr 5 | Apr 12 | Aug 4 | May 24 – Jul 26 | 40–60 |
| Chives | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Cilantro | Mar 15 | Apr 5 | Apr 12 | Aug 4 | May 24 – Jul 26 | 40–60 |
| Comfrey | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Cumin | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jul 26 – Sep 27 | 100–120 |
| Dill | Mar 15 | Apr 5 | Apr 12 | Aug 4 | May 24 – Jul 26 | 40–60 |
| Epazote | Mar 1 | Apr 26 | May 3 | — | Jun 21 – Aug 16 | 45–60 |
| Fennel (herb) | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jun 14 – Aug 23 | 60–90 |
| Feverfew | — | — | Apr 26 | — | Jul 26 – Oct 11 | 90–120 |
| Garlic Chives | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Horehound | — | — | Apr 26 | — | Jul 12 – Sep 6 | 75–90 |
| Hyssop | — | — | Apr 26 | — | Jul 5 – Sep 6 | 70–90 |
| Lemon Balm | — | — | Apr 26 | — | Jun 28 – Aug 16 | 60–70 |
| Lemon Thyme | — | — | Apr 26 | — | Jul 5 – Sep 6 | 70–90 |
| Lovage | — | — | Apr 26 | — | Jul 5 – Sep 6 | 70–90 |
| Marjoram | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Mint | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Oregano | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Parsley | Mar 15 | Apr 5 | Apr 12 | Aug 4 | Jun 14 – Aug 16 | 60–80 |
| Rue | — | — | Apr 26 | — | Jul 5 – Sep 6 | 70–90 |
| Sage | — | — | Apr 26 | — | Jul 12 – Sep 6 | 75–90 |
| Savory | — | — | Apr 26 | — | Jun 21 – Aug 16 | 50–70 |
| Sorrel | Mar 15 | Apr 5 | Apr 12 | Aug 4 | May 24 – Jul 26 | 40–60 |
| Tarragon | — | — | Apr 26 | — | Jun 28 – Sep 6 | 60–90 |
| Thai Basil | Mar 1 | Apr 26 | May 3 | — | Jun 28 – Aug 30 | 50–75 |
| Thyme | — | — | Apr 26 | — | Jul 5 – Sep 6 | 70–90 |
| Valerian | — | — | Apr 26 | — | Aug 30 – Nov 8 | 120–180 |
🌸 Flowers to Grow in Thompson
53 flowers matched to Zone 6b with planting dates calibrated for Thompson.
Show all 53 flowers with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 1 | Apr 19 | Apr 19 | — | Jun 14 – Sep 27 | 60–75 |
| Alliums | — | — | — | Sep 1 | Sep 29 – Oct 27 | 28–42 |
| Anemones | Mar 22 | — | Apr 19 | — | May 17 – Jun 14 | 90–120 |
| Astilbe | Feb 15 | — | Apr 26 | — | Jul 5 – Sep 13 | 70–100 |
| Bachelor's Button | Mar 8 | Mar 22 | Apr 19 | Sep 1 | Jun 21 – Sep 13 | 60–90 |
| Begonias | Feb 8 | — | Apr 26 | — | Jul 5 – Oct 11 | 70–90 |
| Black-eyed Susan | Feb 15 | Apr 19 | Apr 26 | — | Jul 12 – Nov 1 | 60–80 |
| Bleeding Hearts | Feb 15 | — | Apr 26 | — | Jun 21 – Jul 26 | 60–90 |
| Calendula | Mar 8 | Mar 22 | Apr 19 | — | Jun 7 – Sep 13 | 50–70 |
| California Poppy | — | Mar 22 | — | — | May 31 – Jul 26 | 60–90 |
| Celosia | Mar 15 | Apr 26 | Apr 26 | — | Jun 28 – Oct 18 | 60–90 |
| Columbine | Feb 15 | Apr 26 | Apr 26 | — | Jun 21 – Jul 26 | 70–100 |
| Coreopsis | Feb 15 | Apr 19 | Apr 26 | — | Jul 5 – Nov 1 | 60–80 |
| Cosmos | Mar 22 | Apr 19 | Apr 19 | — | Jun 28 – Oct 11 | 60–90 |
| Crocus | — | — | — | Sep 1 | Jul 21 – Aug 11 | 10–20 |
| Daffodils | — | — | — | Sep 1 | Jul 28 – Aug 18 | 20–40 |
| Dahlias | Mar 22 | Apr 26 | Apr 26 | — | Jul 12 – Nov 1 | 70–120 |
| Daylily | Feb 15 | — | Apr 26 | — | Jul 12 – Nov 1 | 60–90 |
| Dianthus | Feb 22 | Mar 22 | Mar 29 | — | May 17 – Aug 16 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 15 | Apr 26 | Apr 26 | — | Jul 12 – Nov 1 | 70–90 |
| Foxglove | Feb 15 | Apr 26 | Apr 26 | — | Jun 21 – Jul 26 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 1 | Apr 26 | Apr 26 | — | Jul 5 – Nov 8 | 70–100 |
| Geraniums | Feb 8 | — | Apr 26 | — | Jul 5 – Oct 11 | 70–100 |
| Gladiolus | — | Apr 19 | Apr 19 | — | Jul 5 – Oct 25 | 70–100 |
| Hostas | Feb 8 | — | Apr 26 | — | Jul 12 – Nov 1 | 60–90 |
| Hyacinths | — | — | — | Sep 1 | Aug 18 – Sep 8 | 14–28 |
| Hydrangeas | Feb 8 | — | Apr 26 | — | Jul 5 – Oct 18 | 90–150 |
| Impatiens | Feb 22 | — | Apr 26 | — | Jul 5 – Oct 18 | 60–75 |
| Irises | — | Division | Apr 26 | — | Jun 21 – Jul 19 | 60–100 |
| Larkspur | — | Mar 22 | — | — | May 31 – Jul 26 | 60–90 |
| Lavender | Feb 8 | — | May 3 | — | Jul 12 – Sep 6 | 90–120 |
| Lilies | — | Division | Apr 26 | — | Jul 5 – Oct 11 | 70–120 |
| Lobelia | Feb 15 | — | Apr 5 | — | May 31 – Aug 23 | 70–80 |
| Lupine | Feb 15 | Apr 26 | Apr 26 | — | Jun 21 – Jul 26 | 75–100 |
| Marigolds | Mar 8 | Apr 19 | Apr 19 | — | Jun 14 – Sep 20 | 50–70 |
| Nasturtium | Mar 22 | Apr 19 | Apr 19 | — | Jun 14 – Oct 11 | 55–65 |
| Pansy | Feb 8 | — | Apr 19 | Aug 18 | Jun 14 – Aug 23 | 70–90 |
| Peonies | — | Division | Apr 26 | — | Jun 28 – Aug 2 | 90–120 |
| Petunia | Feb 22 | — | Apr 26 | — | Jul 5 – Oct 18 | 70–90 |
| Phlox | Feb 15 | Apr 26 | Apr 26 | — | Jul 5 – Sep 27 | 80–110 |
| Portulaca | Mar 15 | Apr 26 | Apr 26 | — | Jun 14 – Oct 4 | 50–70 |
| Ranunculus | Mar 8 | — | Apr 19 | — | May 24 – Jun 21 | 90–120 |
| Roses | Feb 8 | — | Apr 26 | — | Jul 5 – Nov 1 | 90–180 |
| Salvia | Feb 15 | — | Apr 19 | — | Jun 28 – Oct 11 | 70–90 |
| Sedum (Stonecrop) | Feb 15 | — | Apr 26 | — | Aug 16 – Nov 8 | 60–90 |
| Snapdragon | Feb 8 | Mar 29 | Apr 19 | — | Jun 28 – Sep 13 | 70–100 |
| Sunflower | Mar 29 | Apr 19 | Apr 19 | — | Jul 12 – Oct 11 | 70–100 |
| Sweet Alyssum | Mar 8 | Mar 29 | Apr 19 | — | May 31 – Aug 16 | 45–60 |
| Sweet Pea | Mar 8 | Mar 15 | Apr 19 | — | Jul 5 – Sep 13 | 65–85 |
| Tulips | — | — | — | Sep 8 | Aug 18 – Sep 15 | 15–30 |
| Vinca (Annual) | Feb 8 | — | Apr 26 | — | Jul 5 – Oct 18 | 70–90 |
| Yarrow | Feb 15 | Apr 19 | Apr 26 | — | Jul 5 – Nov 1 | 60–90 |
| Zinnia | Mar 22 | Apr 19 | Apr 19 | — | Jun 28 – Oct 4 | 60–70 |
Monthly Planting Guide for Thompson
ZIP Codes in Thompson
Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Grand County.
Your Grand County Garden Planner — Free
A 22-page printable planner built for Grand 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