Planting Calendar for ZIP 98639
Based on your local frost dates - last spring frost around Mar 14, first fall frost around Nov 27 - here is when to plant 79 common crops near ZIP 98639.
Last spring frost
Mar 14
First fall frost
Nov 27
Hardiness zone
9a
Vegetables
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Tomatoes | Jan 31 | Mar 21 (Transplant out) | - |
| Peppers | Jan 17 | Mar 28 (Transplant out) | - |
| Cucumbers | Feb 21 | Mar 21 (Transplant out) | Sep 19 |
| Zucchini | Feb 21 | Mar 21 (Transplant out) | Sep 24 |
| Summer Squash | Feb 21 | Mar 21 (Transplant out) | Sep 22 |
| Winter Squash | Feb 21 | Mar 21 (Transplant out) | - |
| Pumpkins | Feb 21 | Mar 21 (Transplant out) | - |
| Green Beans | - | Mar 14 (Direct sow) | Sep 19 |
| Sweet Corn | - | Mar 21 (Direct sow) | - |
| Melons | Feb 21 | Mar 28 (Transplant out) | - |
| Watermelon | Feb 21 | Mar 28 (Transplant out) | - |
| Okra | - | Mar 28 (Direct sow) | - |
| Eggplant | Jan 17 | Mar 28 (Transplant out) | - |
| Lettuce | Feb 14 | Feb 14 (Transplant out) | Sep 24 |
| Spinach | - | Jan 31 (Direct sow) | Sep 29 |
| Kale | Jan 31 | Feb 21 (Transplant out) | Sep 19 |
| Peas | - | Jan 31 (Direct sow) | Sep 14 |
| Carrots | - | Feb 21 (Direct sow) | Sep 4 |
| Beets | - | Feb 14 (Direct sow) | Sep 19 |
| Radishes | - | Feb 14 (Direct sow) | Oct 16 |
| Broccoli | Jan 31 | Feb 28 (Transplant out) | Sep 9 |
| Cauliflower | Jan 31 | Feb 28 (Transplant out) | Sep 4 |
| Cabbage | Jan 31 | Feb 21 (Transplant out) | Sep 4 |
| Onions | Jan 3 | Feb 14 (Transplant out) | - |
| Potatoes | - | Feb 28 (Direct sow) | - |
| Swiss Chard | Feb 14 | Feb 28 (Transplant out) | Sep 19 |
| Sweet Potatoes | - | Apr 4 (Direct sow) | - |
| Brussels Sprouts | Jan 31 | Feb 28 (Transplant out) | Aug 5 |
| Celery | Jan 3 | Mar 21 (Transplant out) | - |
| Leeks | Jan 3 | Feb 28 (Transplant out) | Jul 16 |
| Turnips | - | Feb 28 (Direct sow) | Sep 24 |
| Rutabaga | - | Mar 14 (Direct sow) | Aug 10 |
| Parsnips | - | Feb 28 (Direct sow) | Jul 16 |
| Kohlrabi | Feb 14 | Feb 28 (Transplant out) | Sep 19 |
| Collard Greens | Jan 31 | Feb 28 (Transplant out) | Sep 9 |
| Mustard Greens | - | Feb 28 (Direct sow) | Sep 29 |
| Arugula | - | Feb 28 (Direct sow) | Oct 4 |
| Bok Choy | Feb 14 | Feb 28 (Transplant out) | Sep 24 |
| Green Onions | - | Feb 28 (Direct sow) | Sep 14 |
| Tomatillos | Jan 31 | Mar 21 (Transplant out) | - |
| Fennel | Feb 14 | Feb 28 (Transplant out) | Aug 25 |
| Popcorn | Mar 14 | Mar 28 (Transplant out) | - |
| Black-Eyed Peas | Mar 14 | Mar 28 (Transplant out) | Aug 25 |
| Lima Beans | Mar 14 | Mar 28 (Transplant out) | - |
| Edamame | Mar 14 | Mar 28 (Transplant out) | - |
| Peanuts | Mar 14 | Mar 28 (Transplant out) | - |
| Globe Artichoke | Jan 17 | Feb 28 (Transplant out) | Aug 15 |
| Horseradish | Mar 14 | Feb 28 (Transplant out) | - |
| Ground Cherries | Jan 31 | Mar 28 (Transplant out) | - |
| Radicchio | Feb 7 | Feb 28 (Transplant out) | Sep 4 |
| Endive | Feb 7 | Feb 28 (Transplant out) | Aug 15 |
| Watercress | Feb 21 | Feb 28 (Transplant out) | Sep 14 |
| Sorrel | Jan 31 | Feb 21 (Transplant out) | Sep 14 |
| Sunchokes | Mar 14 | Feb 28 (Transplant out) | - |
| Malabar Spinach | Jan 31 | Mar 28 (Transplant out) | - |
| Amaranth Greens | Feb 21 | Mar 28 (Transplant out) | Sep 29 |
| Luffa Gourd | Jan 31 | Mar 28 (Transplant out) | - |
| New Zealand Spinach | Feb 14 | Mar 28 (Transplant out) | - |
| Fava Beans | Mar 14 | Feb 14 (Transplant out) | Aug 20 |
| Chayote | Feb 14 | Mar 28 (Transplant out) | - |
| Corn Salad | Mar 14 | Feb 14 (Transplant out) | Sep 14 |
| Bitter Melon | Feb 14 | Mar 28 (Transplant out) | - |
| Cardoon | Jan 31 | Mar 14 (Transplant out) | - |
Herbs
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Basil | Jan 31 | Mar 21 (Transplant out) | - |
| Cilantro | - | Feb 28 (Direct sow) | Sep 24 |
| Parsley | Jan 17 | Mar 28 (Transplant out) | Aug 30 |
| Dill | - | Mar 21 (Direct sow) | Sep 14 |
| Lemon Balm | Jan 31 | Mar 14 (Transplant out) | - |
| Borage | Mar 14 | Mar 14 (Transplant out) | Sep 19 |
| Chervil | Mar 14 | Feb 21 (Transplant out) | Sep 19 |
| Lemongrass | Jan 17 | Mar 28 (Transplant out) | - |
| Summer Savory | Jan 31 | Mar 14 (Transplant out) | - |
| Marjoram | Jan 31 | Mar 21 (Transplant out) | - |
| Lovage | Jan 31 | Mar 14 (Transplant out) | Aug 15 |
| Anise Hyssop | Jan 17 | Mar 14 (Transplant out) | - |
| Shiso | Jan 31 | Mar 21 (Transplant out) | - |
| Stevia | Jan 17 | Mar 28 (Transplant out) | - |
| Chamomile | Jan 31 | Feb 28 (Transplant out) | Sep 9 |
| Tarragon | Mar 14 | Mar 14 (Transplant out) | - |
How to read this calendar
Start seeds indoors is when to sow in trays inside so seedlings are ready to transplant. Plant outside is when to transplant seedlings or direct-sow seed, based on frost tolerance. Fall planting by is the latest date to start a fall crop and still harvest before the first fall frost. Tender crops wait until after the last spring frost; hardy crops can go out earlier.
Computed from NOAA 1991–2020 Climate Normals at Bonneville Dam, Or, 0.8 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.