Frost dates for St Inigoes Webster Nolf, MD
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
March 30
typical year
Safe to plant
April 11
frost is over in 9 of 10 years
First fall frost
November 14
typical year
Growing season
229 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Mar 2 – 16 | – |
| Spinach | – | Feb 16 – Mar 9 | Sep 19 – Oct 3 |
| Lettuce | – | Mar 2 – 23 | Sep 19 – Oct 3 |
| Radishes | – | Mar 2 – Apr 13 | Oct 3 – 17 |
| Onions | – | Mar 2 – 16 | – |
| Potatoes | – | Mar 9 – 23 | – |
| Carrots | – | Mar 9 – 30 | Aug 22 – Sep 5 |
| Beets | – | Mar 2 – 16 | Sep 5 – 19 |
| Kale | Jan 19 – Feb 2 | Mar 2 – 16 | Sep 5 – 19 |
| Broccoli | Jan 19 – Feb 2 | Mar 16 – 30 | Sep 5 – 19 |
| Cabbage | Jan 5 – 19 | Mar 2 – 16 | Sep 5 – 19 |
| Garlic | – | – | Oct 3 – 24 |
| Warm-season crops | |||
| Tomatoes | Feb 14 – 28 | Apr 11 – 25 | – |
| Peppers | Feb 7 – 21 | Apr 18 – May 2 | – |
| Cucumbers | – | Apr 11 – May 2 | – |
| Zucchini | – | Apr 11 – May 9 | – |
| Pumpkins | – | Apr 11 – May 2 | – |
| Green beans | – | Apr 11 – Sep 5 | – |
| Sweet corn | – | Apr 11 – May 9 | – |
| Basil | Mar 7 – 21 | Apr 18 – 25 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | April 11 | March 30 | March 14 |
| Fall frost before | October 29 | November 14 | December 1 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around March 19 (April 1 in a late year), and the first one in fall around November 29.
Where these dates come from
NOAA weather station ST INIGOES WEBSTER NOLF, MD US (USW00003757), 1991–2020 climate normals. It's the nearest station for 17 zip codes, all within 25 miles:
20628, 20630, 20667, 20674, 20680, 20684, 20686, 20687, 20690, 20692, 21824, 21866, 22432, 22473, 22488, 22511, 22539
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.