When to plant in Glasgow, DE
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Glasgow, Delaware — is derived from the closest NOAA station with complete climate normals.
In zone 7b, Glasgow supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Glasgow is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
NEWARK AG FARM · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Glasgow’s own odds, recorded at NEWARK AG FARM.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 9 | Apr 22 | Apr 8 | Oct 9 | Oct 22 | Nov 4 |
| 32°F | Apr 21 | Apr 7 | Mar 26 | Oct 19 | Nov 2 | Nov 17 |
| 28°F | Apr 8 | Mar 27 | Mar 11 | Nov 1 | Nov 13 | Dec 1 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Glasgow, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Glasgow planting FAQ
When is the last spring frost in Glasgow, DE?
On average, the last spring frost in Glasgow is around April 7 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Glasgow, DE?
In Glasgow, the first 32°F freeze of fall lands around November 2 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Glasgow in?
Glasgow is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Glasgow?
Glasgow has about 209 frost-free days — a moderate growing season — between the average last spring frost (April 7) and first fall frost (November 2).
When should I plant tomatoes in Glasgow?
For Glasgow, sow tomatoes indoors about February 10–February 24 and move the seedlings out around April 14, after the last spring frost.
Never miss a window in Glasgow
An email when it’s time to start seeds, transplant, and sow — timed to Glasgow’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bear · 6 km
- Elkton · 6 km
- Brookside · 8 km
- Newark · 9 km
- Pike Creek Valley · 15 km
- Middletown · 18 km
- Hockessin · 21 km
- Pennsville · 22 km
Frost dates recorded at NEWARK AG FARM, 7 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Glasgow, DE — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00076410. Retrieved from https://blissgarden.com/delaware/glasgow.