Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 21636 (Goldsboro, MD)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Dover, DE (18 miles away).
- Average last spring frostApr 450% chance of a 32°F freeze after this date
- Average first fall frostNov 450% chance of a 32°F freeze by this date
- Growing season (frost-free)214 daysmedian, 32°F threshold
- USDA hardiness zone7b5 to 10°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
62°F 55°F or warmer
24-hour average · latest 59°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Powder Mill (56 mi), Avondale 2 N (58 mi).
4-inch depth
63°F 55°F or warmer
24-hour average · latest 59°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Powder Mill (56 mi), Avondale 2 N (58 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 21636 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 63°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): window open as soil cools through the 70s and 60s.
Fertilizer window
Lawn region: Transition zone. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about May 20 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 4: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Mar 22 |
| 50% (the "average" last frost) | Apr 4 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 17 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 23 |
| 50% (the "average" first frost) | Nov 4 |
| 90% (late: most years have frozen by now) | Nov 18 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 17 | Oct 25 |
| 32°F (freeze) | Apr 4 | Nov 4 |
| 28°F (hard freeze) | Mar 25 | Nov 16 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 21636
Dates count from your average last spring frost (Apr 4) and first fall frost (Nov 4). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Feb 7–21 | Apr 11–25 (transplant) | Jul 8–Aug 5 (transplant) |
| Pepper (sweet and hot) | Jan 24–Feb 7 | Apr 18–May 2 (transplant) | Jul 15–Aug 5 (transplant) |
| Eggplant | Jan 24–Feb 7 | Apr 18–May 2 (transplant) | Jul 15–Aug 5 (transplant) |
| Tomatillo | Feb 7–21 | Apr 11–25 (transplant) | – |
| Lettuce | Feb 7–21 | Mar 14–Apr 4 (transplant) Mar 7–Apr 18 (sow outdoors) | Sep 9–30 (transplant) Aug 26–Sep 23 (sowing) |
| Spinach | – | Feb 21–Mar 14 (sow outdoors) | Sep 9–30 (sowing) |
| Kale | Feb 7–21 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Collards | Feb 7–21 | Mar 7–Apr 4 (transplant) Mar 7–Apr 4 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Broccoli | Jan 24–Feb 7 | Mar 7–21 (transplant) | Jul 29–Aug 26 (transplant) |
| Cabbage | Jan 24–Feb 7 | Mar 7–21 (transplant) | Jul 29–Aug 26 (transplant) |
| Cauliflower | Jan 24–Feb 7 | Mar 21–Apr 4 (transplant) | Jul 29–Aug 26 (transplant) |
| Brussels sprouts | Jan 10–24 | Mar 7–21 (transplant) | Jul 15–Aug 5 (transplant) |
| Kohlrabi | Feb 7–21 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Bok choy / Asian greens | – | Mar 7–21 (sow outdoors) | Sep 9–23 (sowing) |
| Arugula | – | Mar 7–Apr 4 (sow outdoors) | Sep 9–Oct 7 (sowing) |
| Mustard greens | – | Mar 7–28 (sow outdoors) | Sep 9–23 (sowing) |
| Swiss chard | Feb 21–Mar 7 | Mar 21–Apr 11 (transplant) Mar 21–Apr 18 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Beet | – | Mar 7–Apr 4 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Carrot | – | Mar 14–Apr 11 (sow outdoors) | Aug 12–26 (sowing) |
| Radish | – | Feb 28–Apr 11 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Turnip | – | Mar 7–28 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Parsnip | – | Mar 14–Apr 4 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 7–Mar 7 (sow outdoors) | Aug 12–26 (sowing) |
| Onion (bulbing) | Jan 10–24 | Feb 21–Mar 7 (transplant) | – |
| Green onion / scallion | – | Feb 21–Mar 21 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Leek | Jan 10–24 | Mar 7–21 (transplant) | – |
| Garlic | – | – | Sep 23–Oct 21 (sowing) |
| Shallot | – | Feb 21–Mar 7 (transplant) | Sep 23–Oct 21 (sowing) |
| Potato | – | Mar 7–21 (transplant) | Jul 15–29 (transplant) |
| Sweet potato | – | Apr 25–May 9 (transplant) | – |
| Sweet corn | – | Apr 11–25 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 11–25 (sow outdoors) | Aug 12–26 (sowing) |
| Bean, pole | – | Apr 11–25 (sow outdoors) | – |
| Lima bean | – | Apr 18–May 2 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 25–May 16 (sow outdoors) | – |
| Cucumber | Mar 7–14 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | Aug 12–26 (sowing) |
| Summer squash / zucchini | Mar 7–14 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | Aug 12–26 (sowing) |
| Winter squash | Mar 7–14 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | – |
| Pumpkin | – | Apr 11–25 (sow outdoors) | – |
| Watermelon | Mar 7–14 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 7–14 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Okra | Feb 21–Mar 7 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Celery | Jan 10–24 | Apr 11–18 (transplant) | – |
| Basil | Feb 21–Mar 7 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | – |
| Cilantro | – | Mar 21–Apr 18 (sow outdoors) | Sep 9–23 (sowing) |
| Parsley | Jan 24–Feb 7 | Mar 21–Apr 4 (transplant) Mar 14–Apr 4 (sow outdoors) | – |
| Dill | – | Apr 4–18 (sow outdoors) | Sep 9–23 (sowing) |
| Sunflower | – | Apr 4–18 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 7–21 (transplant) | – |
| Rhubarb (crowns) | – | Mar 7–21 (transplant) | – |
| Strawberry (plants) | – | Mar 7–21 (transplant) | Aug 26–Sep 23 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Dover, DE (NOAA GHCN-Daily ID USC00072730), elevation 30 ft, 18.0 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Greenwood 2NE, DE | 18 mi | Apr 11 | Oct 30 |
| Chestertown, MD | 20 mi | Apr 3 | Nov 5 |
| Stevensville 2SW, MD | 29 mi | Mar 29 | Nov 12 |
The average last-frost dates of these stations span 13 days, a rough guide to local variation. See data sources & methods.
Frost questions for 21636
When is the last frost in 21636?
The average (50% chance) last spring freeze of 32°F for ZIP 21636 is April 4. For a more cautious planting date, use April 17, when only 1 year in 10 still sees a later freeze.
When is the first frost in 21636?
The average first fall freeze is November 4. In 1 year in 10 it comes by October 23.
What hardiness zone is 21636?
ZIP 21636 is in USDA zone 7b (5 to 10°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 21636 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
21640 Henderson 21639 Greensboro 21660 Ridgely 19964 21644 21607 Barclay 21649 Marydel 19943 Riverview
Other ZIP codes in Caroline County
21629 21632 21639 21640 21641 21655 21660 All Caroline County frost dates · Maryland frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.