Twisp, WA — 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
A quick June briefing for Okanogan County, Washington gardeners — what's urgent, what's next, and what can wait.
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Get alpine strawberries, aronia, and blackberries in the ground
Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.
-
Begin indoor sowing: cucumber, kale, and lettuce
You're about 13 weeks out from your last frost — the perfect window to get these germinating indoors.
-
It's harvest week for lettuce, radish, and anemones
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Before July arrives, get these ready
- Starting indoors: basil, peppers, and pole beans
- First harvests: basil, carrots, and cucumber
- Fall sowing: carrots, kale, and lettuce
Twisp has a classic four-season growing climate (Zone 6b). The last spring frost typically lands around May 13 and the first fall frost arrives around September 26 — a 136-day frost-free season that's long enough for tomatoes, peppers, melons, and a full succession of cool-weather crops on either side. The trick is timing: start warm-season seedlings indoors 6–8 weeks before last frost, harden them off, and plant out the week after your local frost date is statistically safe.
Soils trend Silt Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.
Twisp averages 29.8 drought weeks per year (US Drought Monitor, 2000–present, trend worsening). Treat irrigation as a year-round system, not a summer add-on.
🌡️ USDA Zone
6b (-5°F to 0°F min)
❄️ Avg. Last Frost
May 13
🍂 Avg. First Frost
September 26
📅 Growing Season
136 days
🌧️ Climate
Unknown 0.0" annual
💨 Wind
Moderate 6.8 mph avg
🥶 Frost Tier
Regular 0% frost-free years
🏜️ Drought
29.8 wk/yr trend worsening
📍 ZIP Codes
1 ZIP
Monthly Watering Calendar for Twisp
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
For new gardeners: A drip irrigation system pays for itself in 1-2 seasons in any climate. Twisp's 0" annual rainfall determines whether you'll run it weekly (dry zones) or maybe just during summer dry spells (wet zones).
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 2.9 in | 18 days | — | None |
| Feb | 2.4 in | 16 days | — | None |
| Mar | 2.3 in | 17 days | — | None |
| Apr | 1.4 in | 11 days | 2.9 in | High |
| May | 1.3 in | 10 days | 3 in | High |
| Jun | 0.7 in | 7 days | 3.6 in | Critical |
| Jul | 0.3 in | 3 days | 4 in | Critical |
| Aug | 0.4 in | 3 days | 3.9 in | Critical |
| Sep | 0.7 in | 4 days | 3.6 in | Critical |
| Oct | 1.7 in | 10 days | 2.6 in | High |
| Nov | 3.6 in | 18 days | — | None |
| Dec | 3.7 in | 15 days | — | None |
Annual total: 21.4 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.
Twisp Soil Profile
Soil Type
Silt Loam
Soil pH
5.4-6.5
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 16 | 132 days |
| Cautious | May 23 | Oct 3 | 133 days |
| Average year | May 13 | Sep 26 | 136 days |
| Optimistic | May 8 | Sep 16 | 131 days |
| Aggressive (risky) | Apr 17 | Sep 7 | 143 days |
Not very — frost dates can vary by ±49 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Yes — growing seasons are getting shorter here (about 1.6 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Okanogan County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Okanogan 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 Okanogan County's climate and soil.
County Extension Office
Okanogan County Washington State University Extension Extension Office
Phone: 509-335-2811
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 Okanogan County
Finding local nurseries & garden centers in Okanogan County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Okanogan 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 Okanogan County WA" or "garden center Okanogan 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 Okanogan County WA" or check your extension office and local parks department. Facebook groups like "Okanogan County Gardeners" or "Washington 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 Twisp
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why it matters: Onions are a great example of why day length matters. They "bulb up" only when daylight hits a specific number of hours — plant the wrong variety (short-day in the north, long-day in the south) and you'll get tiny bulbs no matter how well you grow them. Twisp's latitude determines which onion varieties succeed.
Longest Day
15.9 hours
Summer solstice daylight
Shortest Day
8.1 hours
Winter solstice daylight
Peak Sun Hours
10.5 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 | 8.5 hr | 2.1 hr | Short day |
| February | 9.9 hr | 3 hr | Short day |
| March | 11.6 hr | 4.1 hr | Short day |
| April | 13.4 hr | 5.9 hr | Neutral |
| May | 15 hr | 7.8 hr | Long day |
| June | 15.9 hr | 9 hr | Long day |
| July | 15.5 hr | 10.5 hr | Long day |
| August | 14.1 hr | 9.2 hr | Long day |
| September | 12.3 hr | 7.3 hr | Neutral |
| October | 10.5 hr | 4.1 hr | Short day |
| November | 8.9 hr | 2.1 hr | Short day |
| December | 8.1 hr | 1.8 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Twisp
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
The practical takeaway: Lettuce germinates at 35°F. Beans want 60°F. Tomatoes 65°F+. Soil temp, not air temp, is what plants feel. Twisp'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 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 | 12°F | 21°F | ❄️ Dormant | ~36 weeks |
| Feb | 13°F | 20°F | ❄️ Dormant | ~36 weeks |
| Mar | 23°F | 25°F | ❄️ Dormant | ~36 weeks |
| Apr | 33°F | 32°F | ❄️ Dormant | ~36 weeks |
| May | 49°F | 45°F | 🐢 Slow | ~24 weeks |
| Jun | 57°F | 54°F | ♻️ Active | ~14 weeks |
| Jul | 65°F | 61°F | 🔥 Peak | ~8 weeks |
| Aug | 67°F | 64°F | 🔥 Peak | ~8 weeks |
| Sep | 59°F | 57°F | ♻️ Active | ~14 weeks |
| Oct | 46°F | 49°F | 🐢 Slow | ~24 weeks |
| Nov | 34°F | 39°F | ❄️ Dormant | ~36 weeks |
| Dec | 21°F | 26°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 Twisp
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why it matters: In Twisp's climate, pest pressure shapes which crops are easy and which are heartbreak. Tomatoes are easy in dry mountain air, hard in humid coast — same plant, completely different gardening experience.
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 | Moderate | 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 Twisp
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
For new gardeners: Cover crops do four things at once: fix nitrogen (legumes), suppress weeds (any), prevent erosion, and add organic matter when chopped down. Twisp's seasonal pattern determines which species fit which gap.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 15 | Jul 25 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 17 | Jul 18 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 15 | Jul 25 | ✓ 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 2 | Sep 12 | — | 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 16 | Apr 22 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Jul 31 | Apr 22 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 14 | Apr 29 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 14 | Apr 29 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 19 | Apr 29 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 4 | Apr 29 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Twisp
Why this matters: Wind dries soil, knocks over young transplants, and disrupts pollination for bees and butterflies. Twisp averages 6.8 mph — above 10 mph means windbreaks (shrubs, fences, taller crops to windward), staked tomatoes from day one, and an extra round of watering during dry windy spells. Lower wind = lower water bills and fewer broken stems.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 12 mph Summer: 9 mph
Fall: 10 mph Winter: 14 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
7.4/10
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 (850 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Twisp
How much water you can collect, when to collect it, and what size system you need for your garden.
What this means for you: Rainwater is unchlorinated, unfluoridated, and at ambient temperature — plants actually prefer it. Twisp's 0" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.
Annual Collection
10,665 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 2,250 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jan, Feb, Nov, Dec
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jun, Jul, Aug, Sep
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 21.4 inches of rain per year
- A 1,000 sq ft roof can collect roughly 10,665 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Jun, Jul, Aug)
- Use a first-flush diverter to keep roof debris out of your collection
🥬 Vegetables to Grow in Twisp
107 vegetables matched to Zone 6b with planting dates calibrated for Twisp.
Show all 107 vegetables with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 8 | May 20 | May 27 | — | Aug 19 – Sep 23 | 80–100 |
| Amaranth | Mar 18 | May 20 | May 27 | — | Aug 26 – Oct 14 | 90–120 |
| Arugula | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Aug 19 | 30–50 |
| Asparagus | — | — | May 27 | — | — | 730–1095 |
| Beets | — | Apr 29 | — | Jul 18 | Jun 24 – Jul 22 | 50–70 |
| Belgian Endive | Apr 8 | Apr 29 | May 13 | Jul 18 | Sep 2 – Oct 28 | 110–150 |
| Bitter Melon | Mar 18 | May 20 | May 27 | — | Jul 29 – Sep 9 | 60–90 |
| Black Beans | — | May 20 | — | — | Aug 19 – Oct 7 | 90–120 |
| Bok Choy | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 29 | 40–60 |
| Broccoli | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 15 – Aug 26 | 60–90 |
| Broccoli Rabe | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 29 | 40–60 |
| Brussels Sprouts | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 12 – Oct 7 | 90–130 |
| Butternut Squash | Apr 8 | May 20 | May 27 | — | Aug 26 – Sep 30 | 85–110 |
| Cabbage | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 15 – Sep 9 | 60–100 |
| Calabash | Mar 18 | May 20 | May 27 | — | Aug 19 – Oct 14 | 80–120 |
| Carrots | — | Apr 29 | — | Jul 18 | Jul 1 – Aug 5 | 60–80 |
| Cauliflower | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Sep 9 | 55–100 |
| Celeriac | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 26 – Sep 30 | 100–120 |
| Celery | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 5 – Sep 30 | 80–120 |
| Celtuce | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 15 – Aug 26 | 60–90 |
| Chard | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Aug 26 | 50–60 |
| Chickpeas | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 5 – Sep 16 | 80–110 |
| Chicory | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 15 – Aug 26 | 60–85 |
| Chinese Cabbage | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Aug 5 | 50–70 |
| Christmas Lima Beans | Mar 18 | May 20 | May 27 | — | Aug 19 – Sep 23 | 80–100 |
| Collard Greens | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Sep 9 | 55–75 |
| Corn | — | May 20 | — | — | Jul 22 – Sep 16 | 60–100 |
| Cowpeas | — | May 20 | — | — | Jul 22 – Sep 2 | 60–90 |
| Cress | Apr 8 | Apr 29 | May 13 | Jul 18 | May 27 – Jun 17 | 14–21 |
| Crookneck Squash | Apr 8 | May 20 | May 27 | — | Jul 15 – Aug 12 | 45–60 |
| Crosne | — | Apr 29 | — | Jul 18 | Sep 30 – Nov 11 | 150–200 |
| Cucumber | Apr 8 | May 20 | May 27 | — | Jul 22 – Sep 16 | 50–70 |
| Daikon | — | Apr 29 | — | Jul 18 | Jun 24 – Jul 22 | 50–70 |
| Delicata Squash | Apr 8 | May 20 | May 27 | — | Aug 19 – Sep 23 | 80–100 |
| Edamame | — | May 20 | — | — | Aug 5 – Sep 16 | 75–100 |
| Eggplant | Mar 4 | May 20 | May 27 | — | Aug 5 – Oct 7 | 65–85 |
| Endive | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 1 – Aug 5 | 45–65 |
| Escarole | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Aug 5 | 50–70 |
| Fava Beans | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 29 – Sep 9 | 75–100 |
| Fennel | Mar 18 | May 20 | May 27 | — | Jul 29 – Sep 9 | 60–90 |
| Garlic | — | — | — | Aug 15 | Nov 14 – Feb 27 | 90–240 |
| Green Beans | — | May 20 | — | — | Jul 15 – Sep 9 | 50–65 |
| Horseradish | — | — | May 27 | — | Sep 30 – Dec 9 | 120–180 |
| Hot Peppers | Mar 4 | May 20 | May 27 | — | Aug 5 – Nov 11 | 70–120 |
| Hubbard Squash | Apr 8 | May 20 | May 27 | — | Sep 9 – Oct 14 | 100–120 |
| Kabocha | Apr 8 | May 20 | May 27 | — | Aug 26 – Sep 23 | 85–100 |
| Kai Lan | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 1 – Jul 29 | 45–60 |
| Kale | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Sep 2 | 50–70 |
| Kidney Beans | — | May 20 | — | — | Aug 19 – Sep 23 | 85–110 |
| Kohlrabi | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 1 – Aug 5 | 45–65 |
| Komatsuna | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Jul 22 | 35–50 |
| Leeks | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 12 – Oct 28 | 90–150 |
| Lentils | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 5 – Sep 16 | 80–110 |
| Lettuce | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Aug 26 | 30–60 |
| Lima Beans | — | May 20 | — | — | Jul 22 – Sep 2 | 60–90 |
| Loofah | Mar 18 | May 20 | May 27 | — | Sep 9 – Nov 11 | 100–150 |
| Luffa | Mar 18 | May 20 | May 27 | — | Aug 26 – Nov 11 | 90–150 |
| Mache | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 29 | 40–60 |
| Melon | Apr 8 | May 20 | May 27 | — | Aug 5 – Sep 23 | 70–100 |
| Microgreens | Apr 8 | Apr 29 | May 13 | Jul 18 | May 20 – Jun 17 | 7–21 |
| Mitsuba | Apr 8 | Apr 29 | May 6 | Jul 18 | Jul 1 – Aug 26 | 50–70 |
| Mizuna | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Jul 15 | 30–45 |
| Mustard Greens | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Aug 19 | 30–50 |
| Napa Cabbage | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Aug 12 | 55–75 |
| New Zealand Spinach | Mar 18 | May 20 | May 27 | — | Jul 22 – Aug 19 | 55–70 |
| Okra | Mar 18 | May 20 | May 27 | — | Jul 22 – Sep 16 | 50–65 |
| Onion | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 12 – Sep 30 | 90–120 |
| Pac Choi | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 22 | 40–55 |
| Parsnip | — | Apr 29 | — | Jul 18 | Aug 12 – Sep 23 | 100–130 |
| Patty Pan Squash | Apr 8 | May 20 | May 27 | — | Jul 15 – Aug 12 | 45–60 |
| Peas | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Sep 2 | 55–70 |
| Peppers | Mar 4 | May 20 | May 27 | — | Jul 29 – Oct 7 | 60–90 |
| Pole Beans | Mar 18 | May 20 | May 27 | — | Jul 22 – Sep 16 | 55–70 |
| Potatoes | Mar 18 | May 20 | May 27 | — | Aug 5 – Oct 14 | 70–120 |
| Pumpkin | Apr 8 | May 20 | May 27 | — | Aug 26 – Oct 14 | 85–120 |
| Purslane | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 29 | 40–60 |
| Radicchio | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 15 – Aug 19 | 60–80 |
| Radish | — | Apr 29 | — | Jul 18 | May 27 – Jun 17 | 22–35 |
| Rhubarb | — | — | Jun 3 | — | — | 365–730 |
| Romanesco | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 29 – Sep 9 | 75–100 |
| Rutabaga | — | Apr 29 | — | Jul 18 | Jul 22 – Aug 26 | 80–100 |
| Salsify | — | Apr 29 | — | Jul 18 | Aug 12 – Sep 23 | 100–130 |
| Savoy Cabbage | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 22 – Sep 16 | 70–110 |
| Scallions | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Aug 5 | 50–70 |
| Scarlet Runner Beans | Mar 18 | May 20 | May 27 | — | Jul 29 – Sep 2 | 60–80 |
| Shallot | Apr 8 | Apr 29 | May 13 | Jul 18 | Aug 12 – Sep 30 | 90–120 |
| Shiso | Mar 25 | May 20 | May 27 | — | Jul 22 – Sep 16 | 50–70 |
| Snap Peas | Mar 18 | May 20 | May 27 | — | Jul 22 – Sep 16 | 55–70 |
| Snow Peas | Apr 8 | Apr 29 | May 13 | Jul 18 | Jul 8 – Sep 2 | 50–65 |
| Soybeans | — | May 20 | — | — | Aug 12 – Oct 7 | 80–120 |
| Spaghetti Squash | Apr 8 | May 20 | May 27 | — | Aug 26 – Sep 23 | 85–100 |
| Spinach | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Aug 19 | 35–50 |
| Squash (Summer) | Apr 8 | May 20 | May 27 | — | Jul 15 – Sep 16 | 45–65 |
| Squash (Winter) | Apr 8 | May 20 | May 27 | — | Aug 19 – Oct 14 | 80–120 |
| Sunchoke | — | — | May 27 | — | Sep 16 – Nov 11 | 110–150 |
| Sweet Corn | — | May 20 | — | — | Jul 22 – Sep 2 | 60–90 |
| Sweet Potatoes | Mar 18 | May 20 | May 27 | — | Aug 26 – Oct 14 | 90–120 |
| Tatsoi | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 17 – Jul 22 | 35–50 |
| Tomatillo | Mar 18 | May 20 | May 27 | — | Jul 29 – Oct 7 | 60–85 |
| Tomatoes | Mar 18 | May 20 | May 27 | — | Jul 29 – Oct 7 | 60–85 |
| Turnip | — | Apr 29 | — | Jul 18 | Jun 10 – Jul 15 | 40–60 |
| Watercress | Apr 8 | Apr 29 | May 13 | Jul 18 | Jun 24 – Jul 29 | 40–60 |
| Watermelon | Apr 8 | May 20 | May 27 | — | Aug 5 – Sep 23 | 70–100 |
| Wax Beans | — | May 20 | — | — | Jul 15 – Sep 9 | 50–65 |
| Winter Melon | Mar 18 | May 20 | May 27 | — | Aug 26 – Oct 14 | 90–120 |
| Yard Long Beans | Mar 18 | May 20 | May 27 | — | Jul 22 – Sep 2 | 55–80 |
| Zucchini | Apr 8 | May 20 | May 27 | — | Jul 15 – Sep 9 | 45–60 |
🍓 Fruits to Grow in Twisp
27 fruits matched to Zone 6b with planting dates calibrated for Twisp.
Show all 27 fruits with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 3 | — | Sep 2 – Dec 16 | 90–180 |
| Aronia | — | — | Jun 3 | — | — | 730–1095 |
| Blackberries | — | — | Jun 3 | — | — | 365–730 |
| Blueberries | — | — | Jun 3 | — | — | 730–1095 |
| Boysenberries | — | — | Jun 3 | — | — | 365–730 |
| Cantaloupe | — | — | Jun 3 | — | Aug 12 – Sep 16 | 70–90 |
| Che Fruit | — | — | Jun 3 | — | — | 1095–1825 |
| Cranberries | — | — | Jun 3 | — | — | 730–1095 |
| Currants | — | — | Jun 3 | — | — | 730–1095 |
| Elderberries | — | — | Jun 3 | — | — | 730–1095 |
| Goji Berries | — | — | Jun 3 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 3 | — | — | 730–1095 |
| Grapes | — | — | Jun 3 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 3 | — | Aug 12 – Oct 7 | 65–80 |
| Hardy Kiwi | — | — | Jun 3 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 3 | — | — | 730–1095 |
| Honeydew | — | — | Jun 3 | — | Aug 26 – Oct 7 | 80–110 |
| Jostaberry | — | — | Jun 3 | — | — | 730–1095 |
| Lingonberries | — | — | Jun 3 | — | — | 730–1095 |
| Medlar | — | — | Jun 3 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 3 | — | — | 730–1825 |
| Pawpaw | — | — | Jun 3 | — | — | 1095–2555 |
| Persimmon | — | — | Jun 3 | — | — | 1095–2555 |
| Quince | — | — | Jun 3 | — | — | 1095–1825 |
| Raspberries | — | — | Jun 3 | — | — | 365–730 |
| Serviceberries | — | — | Jun 3 | — | — | 730–1095 |
| Strawberries | — | — | Jun 3 | — | Sep 2 – Dec 16 | 90–365 |
🌿 Herbs to Grow in Twisp
35 herbs matched to Zone 6b with planting dates calibrated for Twisp.
Show all 35 herbs with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 8 | Apr 29 | May 6 | Jul 18 | — | 365–730 |
| Anise | Apr 8 | Apr 29 | May 6 | Jul 18 | Aug 5 – Oct 21 | 90–120 |
| Basil | Mar 25 | May 20 | May 27 | — | Jul 22 – Sep 23 | 50–75 |
| Bee Balm | — | — | May 20 | — | Aug 19 – Nov 4 | 90–120 |
| Borage | Apr 8 | Apr 29 | May 6 | Jul 18 | Jul 1 – Aug 19 | 50–60 |
| Caraway | Apr 8 | Apr 29 | May 6 | Jul 18 | — | 365–450 |
| Catnip | — | — | May 20 | — | Jul 22 – Sep 23 | 60–80 |
| Chamomile | Apr 8 | Apr 29 | May 6 | Jul 18 | Jul 8 – Sep 16 | 60–90 |
| Chervil | Apr 8 | Apr 29 | May 6 | Jul 18 | Jun 17 – Aug 19 | 40–60 |
| Chives | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Cilantro | Apr 8 | Apr 29 | May 6 | Jul 18 | Jun 17 – Aug 19 | 40–60 |
| Comfrey | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Cumin | Apr 8 | Apr 29 | May 6 | Jul 18 | Aug 19 – Oct 21 | 100–120 |
| Dill | Apr 8 | Apr 29 | May 6 | Jul 18 | Jun 17 – Aug 19 | 40–60 |
| Epazote | Mar 25 | May 20 | May 27 | — | Jul 15 – Sep 9 | 45–60 |
| Fennel (herb) | Apr 8 | Apr 29 | May 6 | Jul 18 | Jul 8 – Sep 16 | 60–90 |
| Feverfew | — | — | May 20 | — | Aug 19 – Nov 4 | 90–120 |
| Garlic Chives | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Horehound | — | — | May 20 | — | Aug 5 – Sep 30 | 75–90 |
| Hyssop | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Lemon Balm | — | — | May 20 | — | Jul 22 – Sep 9 | 60–70 |
| Lemon Thyme | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Lovage | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Marjoram | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Mint | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Oregano | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Parsley | Apr 8 | Apr 29 | May 6 | Jul 18 | Jul 8 – Sep 9 | 60–80 |
| Rue | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Sage | — | — | May 20 | — | Aug 5 – Sep 30 | 75–90 |
| Savory | — | — | May 20 | — | Jul 15 – Sep 9 | 50–70 |
| Sorrel | Apr 8 | Apr 29 | May 6 | Jul 18 | Jun 17 – Aug 19 | 40–60 |
| Tarragon | — | — | May 20 | — | Jul 22 – Sep 30 | 60–90 |
| Thai Basil | Mar 25 | May 20 | May 27 | — | Jul 22 – Sep 23 | 50–75 |
| Thyme | — | — | May 20 | — | Jul 29 – Sep 30 | 70–90 |
| Valerian | — | — | May 20 | — | Sep 23 – Dec 2 | 120–180 |
🌸 Flowers to Grow in Twisp
53 flowers matched to Zone 6b with planting dates calibrated for Twisp.
Show all 53 flowers with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 25 | May 13 | May 13 | — | Jul 8 – Oct 21 | 60–75 |
| Alliums | — | — | — | Aug 15 | Sep 12 – Oct 10 | 28–42 |
| Anemones | Apr 15 | — | May 13 | — | Jun 10 – Jul 8 | 90–120 |
| Astilbe | Mar 11 | — | May 20 | — | Jul 29 – Oct 7 | 70–100 |
| Bachelor's Button | Apr 1 | Apr 15 | May 13 | Aug 15 | Jul 15 – Oct 7 | 60–90 |
| Begonias | Mar 4 | — | May 20 | — | Jul 29 – Nov 4 | 70–90 |
| Black-eyed Susan | Mar 11 | May 13 | May 20 | — | Aug 5 – Nov 25 | 60–80 |
| Bleeding Hearts | Mar 11 | — | May 20 | — | Jul 15 – Aug 19 | 60–90 |
| Calendula | Apr 1 | Apr 15 | May 13 | — | Jul 1 – Oct 7 | 50–70 |
| California Poppy | — | Apr 15 | — | — | Jun 24 – Aug 19 | 60–90 |
| Celosia | Apr 8 | May 20 | May 20 | — | Jul 22 – Nov 11 | 60–90 |
| Columbine | Mar 11 | May 20 | May 20 | — | Jul 15 – Aug 19 | 70–100 |
| Coreopsis | Mar 11 | May 13 | May 20 | — | Jul 29 – Nov 25 | 60–80 |
| Cosmos | Apr 15 | May 13 | May 13 | — | Jul 22 – Nov 4 | 60–90 |
| Crocus | — | — | — | Aug 15 | Jul 4 – Jul 25 | 10–20 |
| Daffodils | — | — | — | Aug 15 | Jul 11 – Aug 1 | 20–40 |
| Dahlias | Apr 15 | May 20 | May 20 | — | Aug 5 – Nov 25 | 70–120 |
| Daylily | Mar 11 | — | May 20 | — | Aug 5 – Nov 25 | 60–90 |
| Dianthus | Mar 18 | Apr 15 | Apr 22 | — | Jun 10 – Sep 9 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 11 | May 20 | May 20 | — | Aug 5 – Nov 25 | 70–90 |
| Foxglove | Mar 11 | May 20 | May 20 | — | Jul 15 – Aug 19 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 25 | May 20 | May 20 | — | Jul 29 – Dec 2 | 70–100 |
| Geraniums | Mar 4 | — | May 20 | — | Jul 29 – Nov 4 | 70–100 |
| Gladiolus | — | May 13 | May 13 | — | Jul 29 – Nov 18 | 70–100 |
| Hostas | Mar 4 | — | May 20 | — | Aug 5 – Nov 25 | 60–90 |
| Hyacinths | — | — | — | Aug 15 | Aug 1 – Aug 22 | 14–28 |
| Hydrangeas | Mar 4 | — | May 20 | — | Jul 29 – Nov 11 | 90–150 |
| Impatiens | Mar 18 | — | May 20 | — | Jul 29 – Nov 11 | 60–75 |
| Irises | — | Division | May 20 | — | Jul 15 – Aug 12 | 60–100 |
| Larkspur | — | Apr 15 | — | — | Jun 24 – Aug 19 | 60–90 |
| Lavender | Mar 4 | — | May 27 | — | Aug 5 – Sep 30 | 90–120 |
| Lilies | — | Division | May 20 | — | Jul 29 – Nov 4 | 70–120 |
| Lobelia | Mar 11 | — | Apr 29 | — | Jun 24 – Sep 16 | 70–80 |
| Lupine | Mar 11 | May 20 | May 20 | — | Jul 15 – Aug 19 | 75–100 |
| Marigolds | Apr 1 | May 13 | May 13 | — | Jul 8 – Oct 14 | 50–70 |
| Nasturtium | Apr 15 | May 13 | May 13 | — | Jul 8 – Nov 4 | 55–65 |
| Pansy | Mar 4 | — | May 13 | Aug 1 | Jul 8 – Sep 16 | 70–90 |
| Peonies | — | Division | May 20 | — | Jul 22 – Aug 26 | 90–120 |
| Petunia | Mar 18 | — | May 20 | — | Jul 29 – Nov 11 | 70–90 |
| Phlox | Mar 11 | May 20 | May 20 | — | Jul 29 – Oct 21 | 80–110 |
| Portulaca | Apr 8 | May 20 | May 20 | — | Jul 8 – Oct 28 | 50–70 |
| Ranunculus | Apr 1 | — | May 13 | — | Jun 17 – Jul 15 | 90–120 |
| Roses | Mar 4 | — | May 20 | — | Jul 29 – Nov 25 | 90–180 |
| Salvia | Mar 11 | — | May 13 | — | Jul 22 – Nov 4 | 70–90 |
| Sedum (Stonecrop) | Mar 11 | — | May 20 | — | Sep 9 – Dec 2 | 60–90 |
| Snapdragon | Mar 4 | Apr 22 | May 13 | — | Jul 22 – Oct 7 | 70–100 |
| Sunflower | Apr 22 | May 13 | May 13 | — | Aug 5 – Nov 4 | 70–100 |
| Sweet Alyssum | Apr 1 | Apr 22 | May 13 | — | Jun 24 – Sep 9 | 45–60 |
| Sweet Pea | Apr 1 | Apr 8 | May 13 | — | Jul 29 – Oct 7 | 65–85 |
| Tulips | — | — | — | Aug 22 | Aug 1 – Aug 29 | 15–30 |
| Vinca (Annual) | Mar 4 | — | May 20 | — | Jul 29 – Nov 11 | 70–90 |
| Yarrow | Mar 11 | May 13 | May 20 | — | Jul 29 – Nov 25 | 60–90 |
| Zinnia | Apr 15 | May 13 | May 13 | — | Jul 22 – Oct 28 | 60–70 |
Monthly Planting Guide for Twisp
ZIP Codes in Twisp
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 Okanogan County.
Your Okanogan County Garden Planner — Free
A 22-page printable planner built for Okanogan 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