Grass Range, MT — Planting Guide for June
Free PDF, personalized for your town's frost dates & climate. Drop your email — we'll send the link.
What to do in June
If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.
-
Harden off and plant basil, cucumber, and peppers
Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.
-
Put cucumber, green beans, and peppers seeds straight in the ground
Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.
-
Sow celosia, cosmos, and dahlias in trays indoors
Label every cell. You will absolutely forget which is which otherwise.
-
Start harvesting lettuce, radish, and arugula
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
-
Kick off the fall garden with carrots, kale, and lettuce
Fall crops get sweeter with a light frost. Don't be afraid of cool nights.
A few tasks this June that'll pay off in July
- Starting indoors: basil, cucumber, and kale
- First harvests: carrots, green beans, and kale
Grass Range gardens in a dry climate (only 17" 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.
Grass Range averages 26.7 drought weeks per year (US Drought Monitor, 2000–present, trend improving). Treat irrigation as a year-round system, not a summer add-on.
🌡️ USDA Zone
4b (-25°F to -20°F min)
❄️ Avg. Last Frost
May 20
🍂 Avg. First Frost
September 20
📅 Growing Season
123 days
🌧️ Climate
Semi Arid 17.3" annual
💨 Wind
Moderate 9.1 mph avg
🥶 Frost Tier
Regular 0% frost-free years
🏜️ Drought
26.7 wk/yr trend improving
📍 ZIP Codes
1 ZIP
Monthly Watering Calendar for Grass Range
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why this matters: 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. Grass Range's 17" annual tells you which side you're on.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 0.8 in | 6 days | — | None |
| Feb | 0.8 in | 5 days | — | None |
| Mar | 1.1 in | 6 days | — | None |
| Apr | 1.3 in | 9 days | 3 in | High |
| May | 1.3 in | 8 days | 3 in | High |
| Jun | 0.7 in | 4 days | 3.6 in | Critical |
| Jul | 1.1 in | 5 days | 3.2 in | Critical |
| Aug | 1.3 in | 7 days | 3 in | High |
| Sep | 0.8 in | 5 days | 3.5 in | Critical |
| Oct | 1.2 in | 5 days | 3.1 in | Critical |
| Nov | 0.8 in | 5 days | — | None |
| Dec | 0.8 in | 6 days | — | None |
Annual total: 12 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.
Grass Range Soil Profile
Soil Type
Loam
Soil pH
6.4-8
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 6 | Oct 5 | 121 days |
| Cautious | May 28 | Sep 26 | 121 days |
| Average year | May 20 | Sep 20 | 123 days |
| Optimistic | May 14 | Sep 15 | 124 days |
| Aggressive (risky) | May 8 | Sep 10 | 125 days |
Not very — frost dates can vary by ±28 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 1.5 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Fergus County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Fergus 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 Fergus County's climate and soil.
County Extension Office
Fergus County Montana State University Extension Extension Office
Phone: 406-994-3402
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 Fergus County
Finding local nurseries & garden centers in Fergus County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Fergus 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 Fergus County MT" or "garden center Fergus 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 Fergus County MT" or check your extension office and local parks department. Facebook groups like "Fergus County Gardeners" or "Montana 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 1 more succession options
Sunlight & Day Length in Grass Range
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why it matters: Lettuce and cilantro "bolt" (go to seed) when days lengthen. Knowing your day-length curve helps you time spring plantings to harvest before the bolting trigger hits. Grass Range's daylight ranges shape the planting calendar.
Longest Day
15.7 hours
Summer solstice daylight
Shortest Day
8.3 hours
Winter solstice daylight
Peak Sun Hours
11.1 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 | 8.7 hr | 4.7 hr | Short day |
| February | 10 hr | 5.8 hr | Short day |
| March | 11.6 hr | 7.3 hr | Short day |
| April | 13.4 hr | 7.6 hr | Neutral |
| May | 14.9 hr | 9.5 hr | Long day |
| June | 15.7 hr | 10.8 hr | Long day |
| July | 15.4 hr | 11.1 hr | Long day |
| August | 14.1 hr | 10.1 hr | Long day |
| September | 12.3 hr | 8.6 hr | Neutral |
| October | 10.6 hr | 7 hr | Short day |
| November | 9.1 hr | 5.1 hr | Short day |
| December | 8.3 hr | 4.5 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Grass Range
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why this matters: Air temperature lies. Your air can be 70°F in April but the soil 4 inches down is still 50°F — too cold for tomatoes or peppers to root properly. Grass Range's soil temperature curve tells you the real planting window. A $5 soil thermometer pays for itself in one season.
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 | -7°F | 2°F | ❄️ Dormant | ~36 weeks |
| Feb | -3°F | 1°F | ❄️ Dormant | ~36 weeks |
| Mar | 6°F | 6°F | ❄️ Dormant | ~36 weeks |
| Apr | 21°F | 20°F | ❄️ Dormant | ~36 weeks |
| May | 33°F | 30°F | ❄️ Dormant | ~36 weeks |
| Jun | 42°F | 38°F | 🐢 Slow | ~24 weeks |
| Jul | 52°F | 44°F | ♻️ Active | ~14 weeks |
| Aug | 54°F | 48°F | ♻️ Active | ~14 weeks |
| Sep | 43°F | 42°F | 🐢 Slow | ~24 weeks |
| Oct | 33°F | 34°F | ❄️ Dormant | ~36 weeks |
| Nov | 17°F | 22°F | ❄️ Dormant | ~36 weeks |
| Dec | 3°F | 9°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 Grass Range
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
For new gardeners: Pest and disease pressure is the X-factor most beginners under-plan for. Grass Range's climate determines whether you can mostly "plant and see" or whether you need a pest-management routine from the first seedling.
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 |
| Cabbage worms | Low | Jun, Jul, Aug |
| Colorado potato beetle | Moderate | Jun, Jul |
| Flea beetles | Low | May, Jun, Jul |
| Slugs | Moderate | May, 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 Grass Range
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
For new gardeners: A fall-planted cover crop in Grass Range is the closest thing to free soil amendment. Plant cereal rye or hairy vetch after harvest; chop it down before it flowers in spring; the soil it leaves behind out-grows any store-bought compost.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 21 | Jul 19 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 25 | Jul 12 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | Jun 14 | Aug 23 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (5 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Daikon radish | Aug 12 | Apr 29 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 9 | Apr 29 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 9 | Apr 29 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 28 | Apr 29 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 14 | May 6 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Grass Range
What this means for you: 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. Grass Range sees 9.1 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: 15 mph Summer: 11 mph
Fall: 13 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 (831 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Grass Range
How much water you can collect, when to collect it, and what size system you need for your garden.
The practical takeaway: Captured rainwater is better for plants than tap water (no chlorine), works during water restrictions, and reduces stormwater runoff. Grass Range's 17" annual rainfall is a meaningful pool — most homes could capture 10,000+ gallons a year with a decent system.
Annual Collection
5,980 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 2,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Apr, May, Aug, Oct
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jan, Feb, Jun, Sep, 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 12.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 5,980 gallons annually
- Rainwater harvesting is fully legal in your state
- In your dry climate, every drop counts — consider a larger cistern system
- Position collection tanks in shade to reduce evaporation and algae growth
🥬 Vegetables to Grow in Grass Range
95 vegetables matched to Zone 4b with planting dates calibrated for Grass Range.
Show all 95 vegetables with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 8 | Jun 3 | Jun 10 | — | Sep 2 – Oct 7 | 80–100 |
| Amaranth | Mar 18 | Jun 3 | Jun 10 | — | Sep 9 – Oct 28 | 90–120 |
| Arugula | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Aug 26 | 30–50 |
| Asparagus | — | — | Jun 3 | — | — | 730–1095 |
| Beets | — | May 13 | — | Jun 28 | Jul 8 – Aug 5 | 50–70 |
| Belgian Endive | Apr 8 | May 13 | May 20 | Jun 28 | Sep 9 – Oct 14 | 110–150 |
| Black Beans | — | Jun 3 | — | — | Sep 2 – Oct 21 | 90–120 |
| Bok Choy | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Aug 5 | 40–60 |
| Broccoli | Apr 8 | May 13 | May 20 | Jun 28 | Jul 22 – Sep 2 | 60–90 |
| Broccoli Rabe | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Aug 5 | 40–60 |
| Brussels Sprouts | Apr 8 | May 13 | May 20 | Jun 28 | Aug 19 – Oct 14 | 90–130 |
| Butternut Squash | Apr 8 | Jun 3 | Jun 10 | — | Sep 9 – Oct 14 | 85–110 |
| Cabbage | Apr 8 | May 13 | May 20 | Jun 28 | Jul 22 – Sep 16 | 60–100 |
| Carrots | — | May 13 | — | Jun 28 | Jul 15 – Aug 19 | 60–80 |
| Cauliflower | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 16 | 55–100 |
| Celeriac | Apr 8 | May 13 | May 20 | Jun 28 | Sep 2 – Oct 7 | 100–120 |
| Celery | Apr 8 | May 13 | May 20 | Jun 28 | Aug 12 – Oct 7 | 80–120 |
| Celtuce | Apr 8 | May 13 | May 20 | Jun 28 | Jul 22 – Sep 2 | 60–90 |
| Chard | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 2 | 50–60 |
| Chickpeas | Apr 8 | May 13 | May 20 | Jun 28 | Aug 12 – Sep 23 | 80–110 |
| Chicory | Apr 8 | May 13 | May 20 | Jun 28 | Jul 22 – Sep 2 | 60–85 |
| Chinese Cabbage | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Aug 12 | 50–70 |
| Christmas Lima Beans | Mar 18 | Jun 3 | Jun 10 | — | Sep 2 – Oct 7 | 80–100 |
| Collard Greens | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 16 | 55–75 |
| Corn | — | Jun 3 | — | — | Aug 5 – Sep 30 | 60–100 |
| Cress | Apr 8 | May 13 | May 20 | Jun 28 | Jun 3 – Jun 24 | 14–21 |
| Crookneck Squash | Apr 8 | Jun 3 | Jun 10 | — | Jul 29 – Aug 26 | 45–60 |
| Crosne | — | May 13 | — | Jun 28 | Oct 14 – Oct 7 | 150–200 |
| Cucumber | Apr 8 | Jun 3 | Jun 10 | — | Aug 5 – Sep 30 | 50–70 |
| Daikon | — | May 13 | — | Jun 28 | Jul 8 – Aug 5 | 50–70 |
| Delicata Squash | Apr 8 | Jun 3 | Jun 10 | — | Sep 2 – Oct 7 | 80–100 |
| Edamame | — | Jun 3 | — | — | Aug 19 – Sep 30 | 75–100 |
| Endive | Apr 8 | May 13 | May 20 | Jun 28 | Jul 8 – Aug 12 | 45–65 |
| Escarole | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Aug 12 | 50–70 |
| Fava Beans | Apr 8 | May 13 | May 20 | Jun 28 | Aug 5 – Sep 16 | 75–100 |
| Fennel | Mar 18 | Jun 3 | Jun 10 | — | Aug 12 – Sep 23 | 60–90 |
| Garlic | — | — | — | Aug 9 | Nov 8 – Jan 3 | 90–240 |
| Green Beans | — | Jun 3 | — | — | Jul 29 – Sep 23 | 50–65 |
| Horseradish | — | — | Jun 3 | — | Oct 7 – Oct 28 | 120–180 |
| Hubbard Squash | Apr 8 | Jun 3 | Jun 10 | — | Sep 23 – Oct 28 | 100–120 |
| Kabocha | Apr 8 | Jun 3 | Jun 10 | — | Sep 9 – Oct 7 | 85–100 |
| Kai Lan | Apr 8 | May 13 | May 20 | Jun 28 | Jul 8 – Aug 5 | 45–60 |
| Kale | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 9 | 50–70 |
| Kidney Beans | — | Jun 3 | — | — | Sep 2 – Oct 7 | 85–110 |
| Kohlrabi | Apr 8 | May 13 | May 20 | Jun 28 | Jul 8 – Aug 12 | 45–65 |
| Komatsuna | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Jul 29 | 35–50 |
| Leeks | Apr 8 | May 13 | May 20 | Jun 28 | Aug 19 – Oct 14 | 90–150 |
| Lentils | Apr 8 | May 13 | May 20 | Jun 28 | Aug 12 – Sep 23 | 80–110 |
| Lettuce | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Sep 2 | 30–60 |
| Lima Beans | — | Jun 3 | — | — | Aug 5 – Sep 16 | 60–90 |
| Mache | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Aug 5 | 40–60 |
| Melon | Apr 8 | Jun 3 | Jun 10 | — | Aug 19 – Oct 7 | 70–100 |
| Microgreens | Apr 8 | May 13 | May 20 | Jun 28 | May 27 – Jun 24 | 7–21 |
| Mitsuba | Apr 8 | May 13 | May 13 | Jun 28 | Jul 8 – Sep 2 | 50–70 |
| Mizuna | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Jul 22 | 30–45 |
| Mustard Greens | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Aug 26 | 30–50 |
| Napa Cabbage | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Aug 19 | 55–75 |
| Onion | Apr 8 | May 13 | May 20 | Jun 28 | Aug 19 – Oct 7 | 90–120 |
| Pac Choi | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Jul 29 | 40–55 |
| Parsnip | — | May 13 | — | Jun 28 | Aug 26 – Oct 7 | 100–130 |
| Patty Pan Squash | Apr 8 | Jun 3 | Jun 10 | — | Jul 29 – Aug 26 | 45–60 |
| Peas | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 9 | 55–70 |
| Peppers | Mar 4 | Jun 3 | Jun 10 | — | Aug 12 – Oct 21 | 60–90 |
| Pole Beans | Mar 18 | Jun 3 | Jun 10 | — | Aug 5 – Sep 30 | 55–70 |
| Potatoes | Mar 18 | Jun 3 | Jun 10 | — | Aug 19 – Oct 28 | 70–120 |
| Pumpkin | Apr 8 | Jun 3 | Jun 10 | — | Sep 9 – Oct 28 | 85–120 |
| Purslane | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Aug 5 | 40–60 |
| Radicchio | Apr 8 | May 13 | May 20 | Jun 28 | Jul 22 – Aug 26 | 60–80 |
| Radish | — | May 13 | — | Jun 28 | Jun 10 – Jul 1 | 22–35 |
| Rhubarb | — | — | Jun 17 | — | — | 365–730 |
| Romanesco | Apr 8 | May 13 | May 20 | Jun 28 | Aug 5 – Sep 16 | 75–100 |
| Rutabaga | — | May 13 | — | Jun 28 | Aug 5 – Sep 9 | 80–100 |
| Salsify | — | May 13 | — | Jun 28 | Aug 26 – Oct 7 | 100–130 |
| Savoy Cabbage | Apr 8 | May 13 | May 20 | Jun 28 | Jul 29 – Sep 23 | 70–110 |
| Scallions | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Aug 12 | 50–70 |
| Scarlet Runner Beans | Mar 18 | Jun 3 | Jun 10 | — | Aug 12 – Sep 16 | 60–80 |
| Shallot | Apr 8 | May 13 | May 20 | Jun 28 | Aug 19 – Oct 7 | 90–120 |
| Shiso | Mar 25 | May 27 | Jun 10 | — | Aug 5 – Sep 30 | 50–70 |
| Snap Peas | Mar 18 | Jun 3 | Jun 10 | — | Aug 5 – Sep 30 | 55–70 |
| Snow Peas | Apr 8 | May 13 | May 20 | Jun 28 | Jul 15 – Sep 9 | 50–65 |
| Soybeans | — | Jun 3 | — | — | Aug 26 – Oct 21 | 80–120 |
| Spaghetti Squash | Apr 8 | Jun 3 | Jun 10 | — | Sep 9 – Oct 7 | 85–100 |
| Spinach | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Aug 26 | 35–50 |
| Squash (Summer) | Apr 8 | Jun 3 | Jun 10 | — | Jul 29 – Sep 30 | 45–65 |
| Squash (Winter) | Apr 8 | Jun 3 | Jun 10 | — | Sep 2 – Oct 28 | 80–120 |
| Sunchoke | — | — | Jun 3 | — | Sep 23 – Oct 28 | 110–150 |
| Sweet Corn | — | Jun 3 | — | — | Aug 5 – Sep 16 | 60–90 |
| Tatsoi | Apr 8 | May 13 | May 20 | Jun 28 | Jun 24 – Jul 29 | 35–50 |
| Tomatillo | Mar 18 | Jun 3 | Jun 10 | — | Aug 12 – Oct 21 | 60–85 |
| Tomatoes | Mar 18 | Jun 3 | Jun 10 | — | Aug 12 – Oct 21 | 60–85 |
| Turnip | — | May 13 | — | Jun 28 | Jun 24 – Jul 29 | 40–60 |
| Watercress | Apr 8 | May 13 | May 20 | Jun 28 | Jul 1 – Aug 5 | 40–60 |
| Watermelon | Apr 8 | Jun 3 | Jun 10 | — | Aug 19 – Oct 7 | 70–100 |
| Wax Beans | — | Jun 3 | — | — | Jul 29 – Sep 23 | 50–65 |
| Zucchini | Apr 8 | Jun 3 | Jun 10 | — | Jul 29 – Sep 23 | 45–60 |
🍓 Fruits to Grow in Grass Range
22 fruits matched to Zone 4b with planting dates calibrated for Grass Range.
Show all 22 fruits with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 17 | — | Sep 16 – Nov 11 | 90–180 |
| Aronia | — | — | Jun 17 | — | — | 730–1095 |
| Blueberries | — | — | Jun 17 | — | — | 730–1095 |
| Cantaloupe | — | — | Jun 17 | — | Aug 26 – Sep 30 | 70–90 |
| Cranberries | — | — | Jun 17 | — | — | 730–1095 |
| Currants | — | — | Jun 17 | — | — | 730–1095 |
| Elderberries | — | — | Jun 17 | — | — | 730–1095 |
| Goji Berries | — | — | Jun 17 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 17 | — | — | 730–1095 |
| Grapes | — | — | Jun 17 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 17 | — | Aug 26 – Oct 21 | 65–80 |
| Hardy Kiwi | — | — | Jun 17 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 17 | — | — | 730–1095 |
| Honeydew | — | — | Jun 17 | — | Sep 9 – Oct 21 | 80–110 |
| Jostaberry | — | — | Jun 17 | — | — | 730–1095 |
| Lingonberries | — | — | Jun 17 | — | — | 730–1095 |
| Medlar | — | — | Jun 17 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 17 | — | — | 730–1825 |
| Persimmon | — | — | Jun 17 | — | — | 1095–2555 |
| Raspberries | — | — | Jun 17 | — | — | 365–730 |
| Serviceberries | — | — | Jun 17 | — | — | 730–1095 |
| Strawberries | — | — | Jun 17 | — | Sep 16 – Nov 11 | 90–365 |
🌿 Herbs to Grow in Grass Range
30 herbs matched to Zone 4b with planting dates calibrated for Grass Range.
Show all 30 herbs with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 8 | May 13 | May 13 | Jun 28 | — | 365–730 |
| Anise | Apr 8 | May 13 | May 13 | Jun 28 | Aug 12 – Oct 7 | 90–120 |
| Basil | Mar 25 | May 27 | Jun 10 | — | Aug 5 – Oct 7 | 50–75 |
| Bee Balm | — | — | May 27 | — | Aug 26 – Oct 21 | 90–120 |
| Borage | Apr 8 | May 13 | May 13 | Jun 28 | Jul 8 – Aug 26 | 50–60 |
| Caraway | Apr 8 | May 13 | May 13 | Jun 28 | — | 365–450 |
| Catnip | — | — | May 27 | — | Jul 29 – Sep 30 | 60–80 |
| Chamomile | Apr 8 | May 13 | May 13 | Jun 28 | Jul 15 – Sep 23 | 60–90 |
| Chervil | Apr 8 | May 13 | May 13 | Jun 28 | Jun 24 – Aug 26 | 40–60 |
| Chives | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Cilantro | Apr 8 | May 13 | May 13 | Jun 28 | Jun 24 – Aug 26 | 40–60 |
| Comfrey | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Dill | Apr 8 | May 13 | May 13 | Jun 28 | Jun 24 – Aug 26 | 40–60 |
| Fennel (herb) | Apr 8 | May 13 | May 13 | Jun 28 | Jul 15 – Sep 23 | 60–90 |
| Garlic Chives | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Horehound | — | — | May 27 | — | Aug 12 – Oct 7 | 75–90 |
| Hyssop | — | — | May 27 | — | Aug 5 – Oct 7 | 70–90 |
| Lemon Balm | — | — | May 27 | — | Jul 29 – Sep 16 | 60–70 |
| Lovage | — | — | May 27 | — | Aug 5 – Oct 7 | 70–90 |
| Mint | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Oregano | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Parsley | Apr 8 | May 13 | May 13 | Jun 28 | Jul 15 – Sep 16 | 60–80 |
| Rue | — | — | May 27 | — | Aug 5 – Oct 7 | 70–90 |
| Sage | — | — | May 27 | — | Aug 12 – Oct 7 | 75–90 |
| Savory | — | — | May 27 | — | Jul 22 – Sep 16 | 50–70 |
| Sorrel | Apr 8 | May 13 | May 13 | Jun 28 | Jun 24 – Aug 26 | 40–60 |
| Tarragon | — | — | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Thai Basil | Mar 25 | May 27 | Jun 10 | — | Aug 5 – Oct 7 | 50–75 |
| Thyme | — | — | May 27 | — | Aug 5 – Oct 7 | 70–90 |
| Valerian | — | — | May 27 | — | Sep 30 – Oct 21 | 120–180 |
🌸 Flowers to Grow in Grass Range
49 flowers matched to Zone 4b with planting dates calibrated for Grass Range.
Show all 49 flowers with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Apr 1 | May 27 | May 27 | — | Jul 22 – Oct 7 | 60–75 |
| Alliums | — | — | — | Aug 9 | Sep 13 – Oct 11 | 28–42 |
| Astilbe | Mar 11 | — | Jun 3 | — | Aug 26 – Oct 21 | 70–100 |
| Bachelor's Button | Apr 1 | May 6 | May 20 | — | Jul 22 – Sep 23 | 60–90 |
| Begonias | Mar 4 | — | May 27 | — | Aug 5 – Oct 14 | 70–90 |
| Black-eyed Susan | Mar 11 | May 20 | Jun 3 | — | Aug 26 – Nov 11 | 60–80 |
| Bleeding Hearts | Mar 11 | — | Jun 3 | — | Jul 29 – Sep 9 | 60–90 |
| Calendula | Apr 1 | May 6 | May 20 | — | Jul 8 – Sep 23 | 50–70 |
| Celosia | Apr 15 | Jun 3 | Jun 3 | — | Aug 5 – Oct 21 | 60–90 |
| Columbine | Mar 11 | Jun 3 | Jun 3 | — | Jul 29 – Sep 16 | 70–100 |
| Coreopsis | Mar 11 | May 27 | Jun 3 | — | Aug 19 – Nov 11 | 60–80 |
| Cosmos | Apr 22 | May 27 | May 27 | — | Aug 5 – Oct 28 | 60–90 |
| Crocus | — | — | — | Aug 9 | Jun 14 – Jul 12 | 10–20 |
| Daffodils | — | — | — | Aug 9 | Jun 21 – Jul 19 | 20–40 |
| Dahlias | Apr 22 | Jun 3 | Jun 3 | — | Sep 2 – Nov 11 | 70–120 |
| Daylily | Mar 11 | — | Jun 3 | — | Sep 2 – Nov 11 | 60–90 |
| Dianthus | Mar 18 | Apr 29 | May 13 | — | Jul 1 – Sep 9 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 11 | Jun 3 | Jun 3 | — | Sep 2 – Nov 11 | 70–90 |
| Foxglove | Mar 11 | Jun 3 | Jun 3 | — | Jul 29 – Sep 9 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 25 | Jun 3 | Jun 3 | — | Aug 12 – Nov 18 | 70–100 |
| Geraniums | Mar 4 | — | May 27 | — | Aug 5 – Oct 14 | 70–100 |
| Gladiolus | — | May 27 | May 27 | — | Aug 26 – Nov 4 | 70–100 |
| Hostas | Mar 4 | — | Jun 3 | — | Sep 2 – Nov 11 | 60–90 |
| Hyacinths | — | — | — | Aug 9 | Jul 12 – Aug 2 | 14–28 |
| Hydrangeas | Mar 4 | — | Jun 3 | — | Aug 26 – Oct 28 | 90–150 |
| Impatiens | Mar 18 | — | Jun 3 | — | Aug 19 – Oct 21 | 60–75 |
| Irises | — | Division | Jun 3 | — | Jul 29 – Sep 2 | 60–100 |
| Larkspur | — | Apr 22 | — | — | Jul 1 – Aug 19 | 60–90 |
| Lilies | — | Division | Jun 3 | — | Aug 26 – Oct 28 | 70–120 |
| Lobelia | Mar 11 | — | May 20 | — | Jul 15 – Sep 16 | 70–80 |
| Lupine | Mar 11 | Jun 3 | Jun 3 | — | Jul 29 – Sep 9 | 75–100 |
| Marigolds | Apr 8 | May 27 | May 27 | — | Jul 22 – Oct 7 | 50–70 |
| Nasturtium | Apr 22 | May 27 | May 27 | — | Jul 22 – Oct 14 | 55–65 |
| Pansy | Mar 4 | — | May 20 | — | Jul 15 – Sep 2 | 70–90 |
| Peonies | — | Division | Jun 3 | — | Aug 12 – Sep 16 | 90–120 |
| Petunia | Mar 18 | — | May 27 | — | Aug 5 – Oct 21 | 70–90 |
| Phlox | Mar 11 | Jun 3 | Jun 3 | — | Aug 26 – Nov 4 | 80–110 |
| Portulaca | Apr 15 | Jun 3 | Jun 3 | — | Jul 22 – Oct 7 | 50–70 |
| Roses | Mar 4 | — | Jun 3 | — | Aug 26 – Nov 11 | 90–180 |
| Salvia | Mar 18 | — | May 27 | — | Aug 5 – Oct 14 | 70–90 |
| Sedum (Stonecrop) | Mar 11 | — | Jun 3 | — | Oct 7 – Dec 2 | 60–90 |
| Snapdragon | Mar 11 | — | May 20 | — | Jul 29 – Sep 23 | 70–100 |
| Sunflower | Apr 29 | May 27 | May 27 | — | Aug 19 – Oct 21 | 70–100 |
| Sweet Alyssum | Apr 1 | May 13 | May 20 | — | Jul 1 – Sep 2 | 45–60 |
| Sweet Pea | Apr 8 | Apr 15 | May 20 | — | Aug 12 – Sep 30 | 65–85 |
| Tulips | — | — | — | Aug 9 | Jul 5 – Jul 26 | 15–30 |
| Vinca (Annual) | Mar 4 | — | Jun 3 | — | Aug 12 – Oct 21 | 70–90 |
| Yarrow | Mar 11 | May 20 | Jun 3 | — | Aug 19 – Nov 11 | 60–90 |
| Zinnia | Apr 22 | May 27 | May 27 | — | Aug 5 – Oct 21 | 60–70 |
Monthly Planting Guide for Grass Range
ZIP Codes in Grass Range
Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):