Harman US

Planting Calendar for ZIP 20658

Based on your local frost dates - last spring frost around Mar 28, first fall frost around Nov 8 - here is when to plant 79 common crops near ZIP 20658.

Last spring frost
Mar 28
First fall frost
Nov 8
Hardiness zone
7b

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Feb 14 Apr 4 (Transplant out) -
Peppers Jan 31 Apr 11 (Transplant out) -
Cucumbers Mar 7 Apr 4 (Transplant out) Aug 31
Zucchini Mar 7 Apr 4 (Transplant out) Sep 5
Summer Squash Mar 7 Apr 4 (Transplant out) Sep 3
Winter Squash Mar 7 Apr 4 (Transplant out) -
Pumpkins Mar 7 Apr 4 (Transplant out) -
Green Beans - Mar 28 (Direct sow) Aug 31
Sweet Corn - Apr 4 (Direct sow) -
Melons Mar 7 Apr 11 (Transplant out) -
Watermelon Mar 7 Apr 11 (Transplant out) -
Okra - Apr 11 (Direct sow) -
Eggplant Jan 31 Apr 11 (Transplant out) -
Lettuce Feb 28 Feb 28 (Transplant out) Sep 5
Spinach - Feb 14 (Direct sow) Sep 10
Kale Feb 14 Mar 7 (Transplant out) Aug 31
Peas - Feb 14 (Direct sow) Aug 26
Carrots - Mar 7 (Direct sow) Aug 16
Beets - Feb 28 (Direct sow) Aug 31
Radishes - Feb 28 (Direct sow) Sep 27
Broccoli Feb 14 Mar 14 (Transplant out) Aug 21
Cauliflower Feb 14 Mar 14 (Transplant out) Aug 16
Cabbage Feb 14 Mar 7 (Transplant out) Aug 16
Onions Jan 17 Feb 28 (Transplant out) -
Potatoes - Mar 14 (Direct sow) -
Swiss Chard Feb 28 Mar 14 (Transplant out) Aug 31
Sweet Potatoes - Apr 18 (Direct sow) -
Brussels Sprouts Feb 14 Mar 14 (Transplant out) Jul 17
Celery Jan 17 Apr 4 (Transplant out) -
Leeks Jan 17 Mar 14 (Transplant out) Jun 27
Turnips - Mar 14 (Direct sow) Sep 5
Rutabaga - Mar 28 (Direct sow) Jul 22
Parsnips - Mar 14 (Direct sow) Jun 27
Kohlrabi Feb 28 Mar 14 (Transplant out) Aug 31
Collard Greens Feb 14 Mar 14 (Transplant out) Aug 21
Mustard Greens - Mar 14 (Direct sow) Sep 10
Arugula - Mar 14 (Direct sow) Sep 15
Bok Choy Feb 28 Mar 14 (Transplant out) Sep 5
Green Onions - Mar 14 (Direct sow) Aug 26
Tomatillos Feb 14 Apr 4 (Transplant out) -
Fennel Feb 28 Mar 14 (Transplant out) Aug 6
Popcorn Mar 28 Apr 11 (Transplant out) -
Black-Eyed Peas Mar 28 Apr 11 (Transplant out) Aug 6
Lima Beans Mar 28 Apr 11 (Transplant out) -
Edamame Mar 28 Apr 11 (Transplant out) -
Peanuts Mar 28 Apr 11 (Transplant out) -
Globe Artichoke Jan 31 Mar 14 (Transplant out) Jul 27
Horseradish Mar 28 Mar 14 (Transplant out) -
Ground Cherries Feb 14 Apr 11 (Transplant out) -
Radicchio Feb 21 Mar 14 (Transplant out) Aug 16
Endive Feb 21 Mar 14 (Transplant out) Jul 27
Watercress Mar 7 Mar 14 (Transplant out) Aug 26
Sorrel Feb 14 Mar 7 (Transplant out) Aug 26
Sunchokes Mar 28 Mar 14 (Transplant out) -
Malabar Spinach Feb 14 Apr 11 (Transplant out) -
Amaranth Greens Mar 7 Apr 11 (Transplant out) Sep 10
Luffa Gourd Feb 14 Apr 11 (Transplant out) -
New Zealand Spinach Feb 28 Apr 11 (Transplant out) -
Fava Beans Mar 28 Feb 28 (Transplant out) Aug 1
Chayote Feb 28 Apr 11 (Transplant out) -
Corn Salad Mar 28 Feb 28 (Transplant out) Aug 26
Bitter Melon Feb 28 Apr 11 (Transplant out) -
Cardoon Feb 14 Mar 28 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Feb 14 Apr 4 (Transplant out) -
Cilantro - Mar 14 (Direct sow) Sep 5
Parsley Jan 31 Apr 11 (Transplant out) Aug 11
Dill - Apr 4 (Direct sow) Aug 26
Lemon Balm Feb 14 Mar 28 (Transplant out) -
Borage Mar 28 Mar 28 (Transplant out) Aug 31
Chervil Mar 28 Mar 7 (Transplant out) Aug 31
Lemongrass Jan 31 Apr 11 (Transplant out) -
Summer Savory Feb 14 Mar 28 (Transplant out) -
Marjoram Feb 14 Apr 4 (Transplant out) -
Lovage Feb 14 Mar 28 (Transplant out) Jul 27
Anise Hyssop Jan 31 Mar 28 (Transplant out) -
Shiso Feb 14 Apr 4 (Transplant out) -
Stevia Jan 31 Apr 11 (Transplant out) -
Chamomile Feb 14 Mar 14 (Transplant out) Aug 21
Tarragon Mar 28 Mar 28 (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 Quantico Mcas, Va, 9.1 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 20658 Local weather →