Grant County, WA — Planting Guide
Grant County is in USDA Zone 7a. The average last spring frost is April 29 and the first fall frost is October 10, giving you a growing season of approximately 164 days.
At an elevation of 3,122 ft, Grant County receives approximately 17.6 in of rainfall annually. Summer highs average 91°F with winter lows around 25°F. The predominant soil type is Silt Loam.
🌡️ Zone
7a (0°F to 5°F min)
❄️ Last Frost
April 29
🍂 First Frost
October 10
📅 Growing Season
164 days
⛰️ Elevation
3,122 ft
🌧️ Annual Rainfall
17.6 in
Grant County, WA
Moderate season
164 days
Last Spring Frost
April 29
➔
164 growing days
➔
First Fall Frost
October 10
Grant County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Zone 7a
Frost Countdown
--
Loading...
Last Frost: Apr 29
First Frost: Oct 10
Soil & Growing Conditions in Grant County
Soil Type
Silt Loam
Ideal for most crops — holds moisture and nutrients while draining well.
Watering Needs
With 17.6 inches annually, regular irrigation is essential. Drip systems and heavy mulching conserve water.
Season Tips
164-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Soil Test Kit
$12-25
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Digital pH Meter
$10-20
Get instant, accurate soil pH readings to fine-tune your amendments.
Organic Compost
$8-30
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Grant County
112 vegetables that grow well in Zone 7a with planting dates for Grant County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 1 | May 6 | May 13 | — | Aug 5 – Sep 9 | 80–100 |
| Amaranth | Mar 11 | May 6 | May 13 | — | Aug 12 – Sep 30 | 90–120 |
| Artichoke | — | — | May 13 | — | Sep 16 – Nov 25 | 120–180 |
| Arugula | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Aug 5 | 30–50 |
| Asparagus | — | — | May 13 | — | — | 730–1095 |
| Beets | — | Apr 15 | — | Aug 1 | Jun 10 – Jul 8 | 50–70 |
| Belgian Endive | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Aug 19 – Oct 14 | 110–150 |
| Bitter Melon | Mar 11 | May 6 | May 13 | — | Jul 15 – Aug 26 | 60–90 |
| Black Beans | — | May 6 | — | — | Aug 5 – Sep 23 | 90–120 |
| Bok Choy | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 15 | 40–60 |
| Broccoli | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 1 – Aug 12 | 60–90 |
| Broccoli Rabe | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 15 | 40–60 |
| Brussels Sprouts | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 29 – Sep 23 | 90–130 |
| Butternut Squash | Apr 1 | May 6 | May 13 | — | Aug 12 – Sep 16 | 85–110 |
| Cabbage | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 1 – Aug 26 | 60–100 |
| Calabash | Mar 11 | May 6 | May 13 | — | Aug 5 – Sep 30 | 80–120 |
| Cardoon | — | — | May 13 | — | Sep 16 – Oct 28 | 120–150 |
| Carrots | — | Apr 15 | — | Aug 1 | Jun 17 – Jul 22 | 60–80 |
| Cauliflower | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 26 | 55–100 |
| Celeriac | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Aug 12 – Sep 16 | 100–120 |
| Celery | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 22 – Sep 16 | 80–120 |
| Celtuce | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 1 – Aug 12 | 60–90 |
| Chard | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 12 | 50–60 |
| Chayote | Mar 11 | May 6 | May 13 | — | Sep 16 – Nov 25 | 120–180 |
| Chickpeas | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 22 – Sep 2 | 80–110 |
| Chicory | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 1 – Aug 12 | 60–85 |
| Chinese Cabbage | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Jul 22 | 50–70 |
| Christmas Lima Beans | Mar 11 | May 6 | May 13 | — | Aug 5 – Sep 9 | 80–100 |
| Collard Greens | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 26 | 55–75 |
| Corn | — | May 6 | — | — | Jul 8 – Sep 2 | 60–100 |
| Cowpeas | — | May 6 | — | — | Jul 8 – Aug 19 | 60–90 |
| Cress | Mar 25 | Apr 15 | Apr 29 | Aug 1 | May 13 – Jun 3 | 14–21 |
| Crookneck Squash | Apr 1 | May 6 | May 13 | — | Jul 1 – Jul 29 | 45–60 |
| Crosne | — | Apr 15 | — | Aug 1 | Sep 16 – Nov 18 | 150–200 |
| Cucumber | Apr 1 | May 6 | May 13 | — | Jul 8 – Sep 2 | 50–70 |
| Daikon | — | Apr 15 | — | Aug 1 | Jun 10 – Jul 8 | 50–70 |
| Delicata Squash | Apr 1 | May 6 | May 13 | — | Aug 5 – Sep 9 | 80–100 |
| Edamame | — | May 6 | — | — | Jul 22 – Sep 2 | 75–100 |
| Eggplant | Feb 25 | May 6 | May 13 | — | Jul 22 – Sep 23 | 65–85 |
| Endive | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 17 – Jul 22 | 45–65 |
| Escarole | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Jul 22 | 50–70 |
| Fava Beans | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 15 – Aug 26 | 75–100 |
| Fennel | Mar 11 | May 6 | May 13 | — | Jul 15 – Aug 26 | 60–90 |
| Garlic | — | — | — | Aug 29 | Nov 28 – Apr 10 | 90–240 |
| Green Beans | — | May 6 | — | — | Jul 1 – Aug 26 | 50–65 |
| Horseradish | — | — | May 13 | — | Sep 16 – Nov 25 | 120–180 |
| Hot Peppers | Feb 25 | May 6 | May 13 | — | Jul 22 – Oct 28 | 70–120 |
| Hubbard Squash | Apr 1 | May 6 | May 13 | — | Aug 26 – Sep 30 | 100–120 |
| Jicama | Mar 11 | May 6 | May 13 | — | Sep 16 – Nov 25 | 120–180 |
| Kabocha | Apr 1 | May 6 | May 13 | — | Aug 12 – Sep 9 | 85–100 |
| Kai Lan | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 17 – Jul 15 | 45–60 |
| Kale | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 19 | 50–70 |
| Kidney Beans | — | May 6 | — | — | Aug 5 – Sep 9 | 85–110 |
| Kohlrabi | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 17 – Jul 22 | 45–65 |
| Komatsuna | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Jul 8 | 35–50 |
| Leeks | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 29 – Oct 14 | 90–150 |
| Lentils | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 22 – Sep 2 | 80–110 |
| Lettuce | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Aug 12 | 30–60 |
| Lima Beans | — | May 6 | — | — | Jul 8 – Aug 19 | 60–90 |
| Loofah | Mar 11 | May 6 | May 13 | — | Aug 26 – Oct 28 | 100–150 |
| Luffa | Mar 11 | May 6 | May 13 | — | Aug 12 – Oct 28 | 90–150 |
| Mache | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 15 | 40–60 |
| Malabar Spinach | Mar 11 | May 6 | May 13 | — | Jul 8 – Aug 5 | 55–70 |
| Melon | Apr 1 | May 6 | May 13 | — | Jul 22 – Sep 9 | 70–100 |
| Microgreens | Mar 25 | Apr 15 | Apr 29 | Aug 1 | May 6 – Jun 3 | 7–21 |
| Mitsuba | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 17 – Aug 12 | 50–70 |
| Mizuna | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Jul 1 | 30–45 |
| Mustard Greens | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Aug 5 | 30–50 |
| Napa Cabbage | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Jul 29 | 55–75 |
| New Zealand Spinach | Mar 11 | May 6 | May 13 | — | Jul 8 – Aug 5 | 55–70 |
| Okra | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 2 | 50–65 |
| Onion | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 29 – Sep 16 | 90–120 |
| Pac Choi | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 8 | 40–55 |
| Parsnip | — | Apr 15 | — | Aug 1 | Jul 29 – Sep 9 | 100–130 |
| Patty Pan Squash | Apr 1 | May 6 | May 13 | — | Jul 1 – Jul 29 | 45–60 |
| Peas | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 19 | 55–70 |
| Peppers | Feb 25 | May 6 | May 13 | — | Jul 15 – Sep 23 | 60–90 |
| Pole Beans | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 2 | 55–70 |
| Potatoes | Mar 11 | May 6 | May 13 | — | Jul 22 – Sep 30 | 70–120 |
| Pumpkin | Apr 1 | May 6 | May 13 | — | Aug 12 – Sep 30 | 85–120 |
| Purslane | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 15 | 40–60 |
| Radicchio | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 1 – Aug 5 | 60–80 |
| Radish | — | Apr 15 | — | Aug 1 | May 13 – Jun 3 | 22–35 |
| Rhubarb | — | — | May 20 | — | — | 365–730 |
| Romanesco | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 15 – Aug 26 | 75–100 |
| Rutabaga | — | Apr 15 | — | Aug 1 | Jul 8 – Aug 12 | 80–100 |
| Salsify | — | Apr 15 | — | Aug 1 | Jul 29 – Sep 9 | 100–130 |
| Savoy Cabbage | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 8 – Sep 2 | 70–110 |
| Scallions | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Jul 22 | 50–70 |
| Scarlet Runner Beans | Mar 11 | May 6 | May 13 | — | Jul 15 – Aug 19 | 60–80 |
| Shallot | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jul 29 – Sep 16 | 90–120 |
| Shiso | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 2 | 50–70 |
| Snap Peas | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 2 | 55–70 |
| Snow Peas | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 24 – Aug 19 | 50–65 |
| Soybeans | — | May 6 | — | — | Jul 29 – Sep 23 | 80–120 |
| Spaghetti Squash | Apr 1 | May 6 | May 13 | — | Aug 12 – Sep 9 | 85–100 |
| Spinach | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Aug 5 | 35–50 |
| Squash (Summer) | Apr 1 | May 6 | May 13 | — | Jul 1 – Sep 2 | 45–65 |
| Squash (Winter) | Apr 1 | May 6 | May 13 | — | Aug 5 – Sep 30 | 80–120 |
| Sunchoke | — | — | May 13 | — | Sep 2 – Oct 28 | 110–150 |
| Sweet Corn | — | May 6 | — | — | Jul 8 – Aug 19 | 60–90 |
| Sweet Potatoes | Mar 11 | May 6 | May 13 | — | Aug 12 – Sep 30 | 90–120 |
| Tatsoi | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 3 – Jul 8 | 35–50 |
| Tomatillo | Mar 11 | May 6 | May 13 | — | Jul 15 – Sep 23 | 60–85 |
| Tomatoes | Mar 11 | May 6 | May 13 | — | Jul 15 – Sep 23 | 60–85 |
| Turnip | — | Apr 15 | — | Aug 1 | May 27 – Jul 1 | 40–60 |
| Watercress | Mar 25 | Apr 15 | Apr 29 | Aug 1 | Jun 10 – Jul 15 | 40–60 |
| Watermelon | Apr 1 | May 6 | May 13 | — | Jul 22 – Sep 9 | 70–100 |
| Wax Beans | — | May 6 | — | — | Jul 1 – Aug 26 | 50–65 |
| Winter Melon | Mar 11 | May 6 | May 13 | — | Aug 12 – Sep 30 | 90–120 |
| Yard Long Beans | Mar 11 | May 6 | May 13 | — | Jul 8 – Aug 19 | 55–80 |
| Zucchini | Apr 1 | May 6 | May 13 | — | Jul 1 – Aug 26 | 45–60 |
🍓 Fruits to Grow in Grant County
31 fruits that grow well in Zone 7a with planting dates for Grant County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 20 | — | Aug 19 – Dec 2 | 90–180 |
| Aronia | — | — | May 20 | — | — | 730–1095 |
| Blackberries | — | — | May 20 | — | — | 365–730 |
| Blueberries | — | — | May 20 | — | — | 730–1095 |
| Boysenberries | — | — | May 20 | — | — | 365–730 |
| Cantaloupe | — | — | May 20 | — | Jul 29 – Sep 2 | 70–90 |
| Che Fruit | — | — | May 20 | — | — | 1095–1825 |
| Cranberries | — | — | May 20 | — | — | 730–1095 |
| Currants | — | — | May 20 | — | — | 730–1095 |
| Elderberries | — | — | May 20 | — | — | 730–1095 |
| Figs | — | — | May 20 | — | — | 730–1825 |
| Goji Berries | — | — | May 20 | — | — | 730–1095 |
| Gooseberries | — | — | May 20 | — | — | 730–1095 |
| Grapes | — | — | May 20 | — | — | 730–1095 |
| Ground Cherry | — | — | May 20 | — | Jul 29 – Sep 23 | 65–80 |
| Hardy Kiwi | — | — | May 20 | — | — | 1095–1825 |
| Haskaps | — | — | May 20 | — | — | 730–1095 |
| Honeydew | — | — | May 20 | — | Aug 12 – Sep 23 | 80–110 |
| Jostaberry | — | — | May 20 | — | — | 730–1095 |
| Kiwi | — | — | May 20 | — | — | 1095–1825 |
| Lingonberries | — | — | May 20 | — | — | 730–1095 |
| Loquat | — | — | May 20 | — | — | 730–1825 |
| Medlar | — | — | May 20 | — | — | 1095–1825 |
| Mulberries | — | — | May 20 | — | — | 730–1825 |
| Pawpaw | — | — | May 20 | — | — | 1095–2555 |
| Persimmon | — | — | May 20 | — | — | 1095–2555 |
| Pomegranate | — | — | May 20 | — | — | 730–1095 |
| Quince | — | — | May 20 | — | — | 1095–1825 |
| Raspberries | — | — | May 20 | — | — | 365–730 |
| Serviceberries | — | — | May 20 | — | — | 730–1095 |
| Strawberries | — | — | May 20 | — | Aug 19 – Dec 30 | 90–365 |
🌿 Herbs to Grow in Grant County
36 herbs that grow well in Zone 7a with planting dates for Grant County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 25 | Apr 15 | Apr 22 | Aug 1 | — | 365–730 |
| Anise | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jul 22 – Oct 7 | 90–120 |
| Basil | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 9 | 50–75 |
| Bee Balm | — | — | May 6 | — | Aug 5 – Oct 21 | 90–120 |
| Borage | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 17 – Aug 5 | 50–60 |
| Caraway | Mar 25 | Apr 15 | Apr 22 | Aug 1 | — | 365–450 |
| Catnip | — | — | May 6 | — | Jul 8 – Sep 9 | 60–80 |
| Chamomile | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 24 – Sep 2 | 60–90 |
| Chervil | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 3 – Aug 5 | 40–60 |
| Chives | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Cilantro | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 3 – Aug 5 | 40–60 |
| Comfrey | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Cumin | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Aug 5 – Oct 7 | 100–120 |
| Dill | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 3 – Aug 5 | 40–60 |
| Epazote | Mar 11 | May 6 | May 13 | — | Jul 1 – Aug 26 | 45–60 |
| Fennel (herb) | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 24 – Sep 2 | 60–90 |
| Feverfew | — | — | May 6 | — | Aug 5 – Oct 21 | 90–120 |
| Garlic Chives | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Horehound | — | — | May 6 | — | Jul 22 – Sep 16 | 75–90 |
| Hyssop | — | — | May 6 | — | Jul 15 – Sep 16 | 70–90 |
| Lemon Balm | — | — | May 6 | — | Jul 8 – Aug 26 | 60–70 |
| Lemon Thyme | — | — | May 6 | — | Jul 15 – Sep 16 | 70–90 |
| Lovage | — | — | May 6 | — | Jul 15 – Sep 16 | 70–90 |
| Marjoram | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Mint | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Oregano | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Parsley | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 24 – Aug 26 | 60–80 |
| Rosemary | — | — | May 6 | — | Jul 29 – Dec 16 | 80–180 |
| Rue | — | — | May 6 | — | Jul 15 – Sep 16 | 70–90 |
| Sage | — | — | May 6 | — | Jul 22 – Sep 16 | 75–90 |
| Savory | — | — | May 6 | — | Jul 1 – Aug 26 | 50–70 |
| Sorrel | Mar 25 | Apr 15 | Apr 22 | Aug 1 | Jun 3 – Aug 5 | 40–60 |
| Tarragon | — | — | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Thai Basil | Mar 11 | May 6 | May 13 | — | Jul 8 – Sep 9 | 50–75 |
| Thyme | — | — | May 6 | — | Jul 15 – Sep 16 | 70–90 |
| Valerian | — | — | May 6 | — | Sep 9 – Dec 16 | 120–180 |
🌸 Flowers to Grow in Grant County
53 flowers that grow well in Zone 7a with planting dates for Grant County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 18 | Apr 29 | Apr 29 | — | Jun 24 – Oct 14 | 60–75 |
| Alliums | — | — | — | Sep 5 | Oct 3 – Oct 24 | 28–42 |
| Anemones | — | — | — | Aug 15 | Aug 29 – Sep 26 | 90–120 |
| Astilbe | Feb 25 | — | May 6 | — | Jul 15 – Sep 9 | 70–100 |
| Bachelor's Button | Mar 18 | Mar 25 | Apr 29 | Aug 15 | Jul 1 – Sep 30 | 60–90 |
| Begonias | Feb 18 | — | Apr 29 | — | Jul 8 – Oct 28 | 70–90 |
| Black-eyed Susan | Feb 25 | Apr 29 | May 6 | — | Jul 15 – Nov 18 | 60–80 |
| Bleeding Hearts | Feb 25 | — | May 6 | — | Jun 24 – Jul 29 | 60–90 |
| Calendula | Mar 18 | Mar 25 | Apr 29 | Aug 15 | Jun 17 – Sep 30 | 50–70 |
| California Poppy | — | Apr 1 | — | Aug 15 | Jun 10 – Aug 19 | 60–90 |
| Celosia | Apr 1 | Apr 29 | Apr 29 | — | Jul 1 – Oct 28 | 60–90 |
| Columbine | Mar 4 | May 6 | May 6 | — | Jun 24 – Jul 29 | 70–100 |
| Coreopsis | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Nov 18 | 60–80 |
| Cosmos | Apr 1 | Apr 29 | Apr 29 | — | Jul 8 – Oct 28 | 60–90 |
| Crocus | — | — | — | Sep 5 | Aug 1 – Aug 22 | 10–20 |
| Daffodils | — | — | — | Sep 5 | Aug 8 – Aug 29 | 20–40 |
| Dahlias | Apr 1 | May 6 | May 6 | — | Jul 15 – Nov 18 | 70–120 |
| Daylily | Feb 25 | — | May 6 | — | Jul 15 – Nov 18 | 60–90 |
| Dianthus | Mar 4 | Mar 25 | Apr 8 | — | May 27 – Aug 26 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 25 | May 6 | May 6 | — | Jul 22 – Nov 18 | 70–90 |
| Foxglove | Mar 4 | May 6 | May 6 | — | Jun 24 – Jul 29 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 11 | May 6 | May 6 | — | Jul 15 – Dec 2 | 70–100 |
| Geraniums | Feb 18 | — | Apr 29 | — | Jul 8 – Oct 28 | 70–100 |
| Gladiolus | — | Apr 29 | Apr 29 | — | Jul 8 – Nov 11 | 70–100 |
| Hostas | Feb 18 | — | May 6 | — | Jul 15 – Nov 18 | 60–90 |
| Hyacinths | — | — | — | Sep 5 | Aug 29 – Sep 19 | 14–28 |
| Hydrangeas | Feb 18 | — | May 6 | — | Jul 15 – Nov 4 | 90–150 |
| Impatiens | Mar 4 | — | May 6 | — | Jul 15 – Nov 4 | 60–75 |
| Irises | — | Division | May 6 | — | Jun 24 – Jul 29 | 60–100 |
| Larkspur | — | Apr 1 | — | Aug 1 | Jun 10 – Aug 19 | 60–90 |
| Lavender | Feb 25 | — | May 13 | — | Jul 22 – Sep 30 | 90–120 |
| Lilies | — | Division | May 6 | — | Jul 15 – Nov 4 | 70–120 |
| Lobelia | Feb 25 | — | Apr 8 | — | Jun 3 – Aug 26 | 70–80 |
| Lupine | Mar 4 | May 6 | May 6 | — | Jun 24 – Jul 29 | 75–100 |
| Marigolds | Mar 18 | Apr 29 | Apr 29 | — | Jun 24 – Sep 30 | 50–70 |
| Nasturtium | Apr 1 | Apr 29 | Apr 29 | — | Jun 24 – Oct 28 | 55–65 |
| Pansy | Feb 18 | — | Apr 29 | Aug 1 | Jun 24 – Sep 2 | 70–90 |
| Peonies | — | Division | May 6 | — | Jul 1 – Aug 5 | 90–120 |
| Petunia | Mar 4 | — | May 6 | — | Jul 15 – Nov 4 | 70–90 |
| Phlox | Feb 25 | May 6 | May 6 | — | Jul 15 – Oct 7 | 80–110 |
| Portulaca | Apr 1 | Apr 29 | Apr 29 | — | Jun 17 – Oct 14 | 50–70 |
| Ranunculus | — | — | — | Aug 15 | Sep 12 – Oct 10 | 90–120 |
| Roses | Feb 18 | — | May 6 | — | Jul 15 – Nov 18 | 90–180 |
| Salvia | Mar 4 | — | Apr 29 | — | Jul 8 – Oct 28 | 70–90 |
| Sedum (Stonecrop) | Feb 25 | — | May 6 | — | Aug 26 – Nov 18 | 60–90 |
| Snapdragon | Feb 18 | Apr 1 | Apr 29 | Aug 15 | Jul 8 – Sep 30 | 70–100 |
| Sunflower | Apr 8 | Apr 29 | Apr 29 | — | Jul 22 – Oct 28 | 70–100 |
| Sweet Alyssum | Mar 18 | Apr 1 | Apr 29 | Aug 29 | Jun 10 – Sep 2 | 45–60 |
| Sweet Pea | — | Mar 25 | — | Aug 15 | Jun 3 – Aug 26 | 65–85 |
| Tulips | — | — | — | Sep 5 | Aug 22 – Sep 12 | 15–30 |
| Vinca (Annual) | Feb 18 | — | Apr 29 | — | Jul 8 – Oct 28 | 70–90 |
| Yarrow | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Nov 18 | 60–90 |
| Zinnia | Apr 1 | Apr 29 | Apr 29 | — | Jul 8 – Oct 28 | 60–70 |
Monthly Planting Guide for Grant County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Grant County.
Frequently Asked Questions
What planting zone is Grant County, WA?
Grant County is in USDA Hardiness Zone 7a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Grant County, WA?
Based on 30 years of NOAA weather station data, the median last spring frost in Grant County falls around April 29. Plan transplants and direct-sow dates relative to this date.
When is the first fall frost in Grant County, WA?
The median first fall frost in Grant County arrives around October 10. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
Your Grant County Garden Planner — Free
A 22-page printable planner built for Grant County (Zone 7a). 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
$27
$293 value
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
$27
$157 value
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
$27
$210 value
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