Frost Dates for Damascus, OR 97089
Last spring frost March 27 · First fall frost November 13 · 231 frost-free days · USDA Zone 8b
ZIP 97089 has about 15,100 people.
Long season: 231 frost-free days. Spring frost risk spans March 3–April 22 (50 days). Fall frost risk spans October 20–December 10 (51 days).
Frost probability for 97089
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 22 | March 27 | March 3 |
| Fall (first frost) | October 20 | November 13 | December 10 |
Dates come from NOAA 1971–2000 freeze probabilities at TROUTDALE (14.8 km away); the 50% date is the median year.
Which crops fit a 231-day season in Damascus
In Damascus (231 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Feb 20 | Apr 10–Apr 17 | 189 | fits: 80 days to maturity, 189 available after Apr 10. | Jul 14 |
| Pepper | Feb 13 | Apr 10–Apr 17 | 189 | fits: 75 days to maturity, 189 available after Apr 10. | Jul 19 |
| Lettuce | Jan 30 | Feb 27–Mar 6 | 266 | two-plantings: Plant Feb 27 and again by Sep 22; both mature before Nov 20. | Sep 22 |
| Carrots | — | Mar 6–Mar 13 | 273 | fits: 70 days to maturity, 273 available after Mar 6. | Sep 11 |
| Cucumber | Mar 6 | Apr 10–Apr 17 | 203 | two-plantings: Plant Apr 10 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Beans | — | Apr 3–Apr 17 | 217 | two-plantings: Plant Apr 3 and again by Aug 24; both mature before Nov 6. | Aug 24 |
| Peas | — | Jan 30–Apr 10 | 294 | fits: 65 days to maturity, 294 available after Jan 30. | Sep 2 |
| Zucchini | Mar 13 | Apr 10–Apr 17 | 203 | two-plantings: Plant Apr 10 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Onion | Jan 2 | Feb 27–Mar 13 | 266 | fits: 100 days to maturity, 266 available after Feb 27. | — |
| Spinach | — | Jan 30–Mar 20 | 308 | two-plantings: Plant Jan 30 and again by Oct 11; both mature before Dec 4. | Oct 11 |
| Kale | Jan 16 | Feb 27–Mar 13 | 280 | two-plantings: Plant Feb 27 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Broccoli | Jan 30 | Feb 27–Mar 13 | 266 | fits: 80 days to maturity, 266 available after Feb 27. | Aug 18 |
| Cabbage | Jan 30 | Feb 27–Mar 13 | 280 | fits: 70 days to maturity, 280 available after Feb 27. | Sep 11 |
| Radish | — | Jan 30–Apr 24 | 294 | two-plantings: Plant Jan 30 and again by Oct 12; both mature before Nov 20. | Oct 12 |
| Beets | — | Jan 30–Apr 24 | 294 | two-plantings: Plant Jan 30 and again by Sep 12; both mature before Nov 20. | Sep 12 |
| Potatoes | — | Mar 13–Mar 20 | 252 | fits: 90 days to maturity, 252 available after Mar 13. | — |
| Garlic | — | Nov 13 | 336 | overwinter: Plant Nov 13 to Dec 4; harvest the following summer. | Dec 4 |
| Strawberry | — | Feb 20–Apr 17 | 287 | perennial: A perennial: plant Feb 20; it fruits from the following year and keeps producing for several years. | — |
| Corn | Feb 27 | Apr 3–Apr 10 | 203 | fits: 75 days to maturity, 203 available after Apr 3. | Jul 26 |
| Pumpkin | Mar 13 | Apr 10–Apr 10 | 196 | fits: 100 days to maturity, 196 available after Apr 10. | Jul 1 |
| Cauliflower | Feb 13 | Mar 20–Apr 3 | 245 | fits: 75 days to maturity, 245 available after Mar 20. | Aug 23 |
| Swiss Chard | Jan 30 | Mar 13–Mar 13 | 252 | two-plantings: Plant Mar 13 and again by Sep 12; both mature before Nov 20. | Sep 12 |
| Arugula | — | Jan 30–Apr 24 | 308 | two-plantings: Plant Jan 30 and again by Oct 11; both mature before Dec 4. | Oct 11 |
| Brussel Sprouts | Jan 30 | Feb 27–Mar 13 | 280 | fits: 100 days to maturity, 280 available after Feb 27. | Aug 12 |
| Butternut Squash | Mar 13 | Apr 10–Apr 17 | 196 | fits: 100 days to maturity, 196 available after Apr 10. | Jul 1 |
| Eggplant | Feb 6 | Apr 10–Apr 17 | 189 | fits: 70 days to maturity, 189 available after Apr 10. | Jul 24 |
| Okra | Feb 27 | Apr 3–Apr 10 | 210 | two-plantings: Plant Apr 3 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Basil | Feb 20 | Apr 17–Apr 17 | 196 | two-plantings: Plant Apr 17 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Cilantro | — | Feb 27–Mar 20 | 266 | two-plantings: Plant Feb 27 and again by Sep 17; both mature before Nov 20. | Sep 17 |
| Parsley | Jan 16 | Apr 3–Apr 10 | 231 | fits: 70 days to maturity, 231 available after Apr 3. | Aug 28 |
| Celery | Jan 16 | Apr 3–Apr 17 | 231 | fits: 120 days to maturity, 231 available after Apr 3. | Jul 9 |
| Scallions | Jan 16 | Feb 27–Mar 13 | 280 | two-plantings: Plant Feb 27 and again by Sep 21; both mature before Dec 4. | Sep 21 |
| Turnip | — | Feb 27–Mar 13 | 280 | two-plantings: Plant Feb 27 and again by Oct 1; both mature before Dec 4. | Oct 1 |
| Kohlrabi | — | Feb 13–Feb 27 | 294 | two-plantings: Plant Feb 13 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Bok Choy | Feb 27 | Mar 20–Mar 27 | 245 | two-plantings: Plant Mar 20 and again by Sep 22; both mature before Nov 20. | Sep 22 |
| Collards | Jan 16 | Feb 27–Mar 13 | 280 | two-plantings: Plant Feb 27 and again by Sep 21; both mature before Dec 4. | Sep 21 |
| Cantaloupe | Mar 13 | Apr 10–Apr 17 | 189 | fits: 85 days to maturity, 189 available after Apr 10. | Jul 9 |
| Chives | Jan 2 | Apr 3–Apr 10 | 245 | fits: 90 days to maturity, 245 available after Apr 3. | — |
| Dill | — | Jan 30–Apr 24 | 294 | two-plantings: Plant Jan 30 and again by Sep 12; both mature before Nov 20. | Sep 12 |
| Oregano | Jan 16 | Apr 3–Apr 10 | 245 | fits: 80 days to maturity, 245 available after Apr 3. | — |
| Rosemary | Jan 2 | Apr 3–Apr 10 | 231 | fits: 80 days to maturity, 231 available after Apr 3. | — |
| Sage | Jan 30 | Apr 3–Apr 10 | 245 | fits: 75 days to maturity, 245 available after Apr 3. | — |
| Thyme | Jan 16 | Apr 3–Apr 10 | 245 | fits: 90 days to maturity, 245 available after Apr 3. | — |
| Calendula | Feb 13 | Mar 13–Mar 27 | 252 | two-plantings: Plant Mar 13 and again by Sep 17; both mature before Nov 20. | Sep 17 |
| Cosmos | Feb 27 | Mar 27–Apr 10 | 217 | two-plantings: Plant Mar 27 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Lavender | Jan 2 | Mar 27–Apr 10 | 252 | fits: 90 days to maturity, 252 available after Mar 27. | — |
| Marigolds | Feb 13 | Mar 27–Apr 3 | 217 | two-plantings: Plant Mar 27 and again by Aug 27; both mature before Oct 30. | Aug 27 |
| Melons | Mar 13 | Apr 10–Apr 17 | 189 | fits: 85 days to maturity, 189 available after Apr 10. | Jul 9 |
| Mint | — | Mar 27–Apr 10 | 252 | fits: 90 days to maturity, 252 available after Mar 27. | — |
| Nasturtiums | Feb 27 | Mar 27–Apr 3 | 217 | two-plantings: Plant Mar 27 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Pole Beans | — | Apr 3–Apr 17 | 210 | fits: 65 days to maturity, 210 available after Apr 3. | Aug 12 |
| Spaghetti Squash | Mar 13 | Apr 10–Apr 17 | 196 | fits: 90 days to maturity, 196 available after Apr 10. | Jul 11 |
| Sunflowers | — | Mar 27–Apr 10 | 217 | fits: 70 days to maturity, 217 available after Mar 27. | Aug 7 |
| Tomatillos | Jan 30 | Apr 3–Apr 10 | 196 | fits: 75 days to maturity, 196 available after Apr 3. | Jul 19 |
| Watermelon | Mar 13 | Apr 3–Apr 10 | 196 | fits: 80 days to maturity, 196 available after Apr 3. | Jul 14 |
| Yellow Squash | Mar 13 | Apr 10–Apr 17 | 203 | two-plantings: Plant Apr 10 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Zinnias | Feb 27 | Mar 27–Apr 10 | 217 | two-plantings: Plant Mar 27 and again by Aug 17; both mature before Oct 30. | Aug 17 |
Month by month in Damascus
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 2), Lavender (Jan 2), Onion (Jan 2), Rosemary (Jan 2), Celery (Jan 16), Collards (Jan 16), +12 more. Direct sow from: Arugula (Jan 30), Beets (Jan 30), Dill (Jan 30), Peas (Jan 30), Radish (Jan 30), Spinach (Jan 30). |
| February | Start indoors: Eggplant (Feb 6), Calendula (Feb 13), Cauliflower (Feb 13), Marigolds (Feb 13), Pepper (Feb 13), Basil (Feb 20), +7 more. Direct sow from: Kohlrabi (Feb 13), Cilantro (Feb 27), Turnip (Feb 27). Transplant from: Broccoli (Feb 27), Brussel Sprouts (Feb 27), Cabbage (Feb 27), Collards (Feb 27), Kale (Feb 27), Lettuce (Feb 27), +2 more. Plant: Strawberry (Feb 20). |
| March | Start indoors: Cucumber (Mar 6), Butternut Squash (Mar 13), Cantaloupe (Mar 13), Melons (Mar 13), Pumpkin (Mar 13), Spaghetti Squash (Mar 13), +3 more. Direct sow from: Carrots (Mar 6), Potatoes (Mar 13), Sunflowers (Mar 27). Transplant from: Calendula (Mar 13), Swiss Chard (Mar 13), Bok Choy (Mar 20), Cauliflower (Mar 20), Cosmos (Mar 27), Lavender (Mar 27), +4 more. Last frost around March 27. |
| April | Direct sow from: Beans (Apr 3), Pole Beans (Apr 3). Transplant from: Celery (Apr 3), Chives (Apr 3), Corn (Apr 3), Okra (Apr 3), Oregano (Apr 3), Parsley (Apr 3), +17 more. |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Harvest regularly to encourage production. Monitor for pests and disease. |
| July | Last sowing dates: Butternut Squash (Jul 1), Pumpkin (Jul 1), Cantaloupe (Jul 9), Celery (Jul 9), Melons (Jul 9), Spaghetti Squash (Jul 11), +6 more. |
| August | Last sowing dates: Sunflowers (Aug 7), Brussel Sprouts (Aug 12), Pole Beans (Aug 12), Basil (Aug 17), Cosmos (Aug 17), Cucumber (Aug 17), +10 more. |
| September | Last sowing dates: Peas (Sep 2), Cabbage (Sep 11), Carrots (Sep 11), Beets (Sep 12), Dill (Sep 12), Swiss Chard (Sep 12), +8 more. |
| October | Last sowing dates: Turnip (Oct 1), Arugula (Oct 11), Spinach (Oct 11), Radish (Oct 12). |
| November | Direct sow from: Garlic (Nov 13). First frost around November 13. |
| December | Last sowing dates: Garlic (Dec 4). |
Frequently Asked Questions
What is the last frost date for Damascus, OR (ZIP 97089)?
The median last spring frost date for Damascus, OR (ZIP code 97089) is around March 27. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before March 3; one in ten it runs past April 22.
What is the first fall frost date in Damascus, OR?
The median first fall frost date for Damascus, OR is around November 13. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around October 20 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Damascus, OR?
The frost-free growing season in Damascus is about 231 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Damascus (231 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Damascus, OR?
Damascus, OR is in USDA hardiness zone 8b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Damascus, OR?
Start tomatoes indoors Feb 20 and plant out Apr 10 in Damascus. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Damascus?
Two: plant Feb 27 and again by Sep 22; both mature before Nov 20.
When do I plant garlic in Damascus?
Nov 13 to Dec 4; it overwinters and is ready the following summer.
Can I get two tomato crops in Damascus?
Yes: plant out Apr 10 for a summer crop, and set out a second round of transplants by Jul 14 for a fall crop.
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