Zone record — updated 2026-07

Zone 7b Planting Calendar

Zone 7b

In zone 7b, the median last spring frost falls around Mar 25 and the first fall frost around Nov 10, giving roughly 229 frost-free days. Average annual minimum temperature is 5°F to 10°F. Every date in the table below is calculated from those two frost dates.

Comparable areas: Nashville, TN, Oklahoma City, OK, Albuquerque, NM. Mid-South, southern Plains and middle Rio Grande valley. Albuquerque's elevation (~5,300 ft) gives it far larger day-night temperature swings than Nashville at the same zone; late-spring radiative frost is a bigger risk there than the date suggests.

What to plant and when in zone 7b

Sorted by when you start each crop. Dates are calculated from a median last frost of Mar 25 and a first frost of Nov 10.

Zone 7b planting calendar — 56 crops · last frost Mar 25 · first frost Nov 10
Crop Start indoors Plant outside Fall sowing Harvest from
Celery Dec 31 – Jan 14 Apr 8 – Apr 21 Jul 17 – Aug 16
Leek Dec 31 – Jan 28 Feb 25 – Mar 10 May 26 – Jul 25
Onion Dec 31 – Jan 14 Mar 4 – Mar 17 Jun 12 – Jul 2
Rosemary Dec 31 – Jan 14 Apr 8 – Apr 21 Jun 27 – Jul 17
Kale Jan 7 – Jan 28 Feb 25 – Mar 10 Aug 18 – Aug 31 Apr 16 – May 18
Broccoli Jan 14 – Feb 4 Mar 4 – Mar 17 Aug 11 – Aug 24 Apr 23 – Jun 2
Cabbage Jan 14 – Feb 4 Mar 4 – Mar 17 Aug 11 – Aug 24 May 3 – Jun 12
Pepper (sweet/bell) Jan 14 – Feb 11 Apr 15 – Apr 28 Jun 24 – Jul 9
Chives Jan 14 – Jan 28 Mar 25 – Apr 7 Jun 13 – Jun 23
Common Thyme Jan 14 – Jan 28 Mar 25 – Apr 7 May 24 – Jun 23
Greek Oregano Jan 14 – Jan 28 Mar 25 – Apr 7 Jun 13 – Jun 23
Cauliflower Jan 21 – Feb 11 Mar 11 – Mar 24 Aug 11 – Aug 24 Apr 30 – May 30
Eggplant Jan 28 – Feb 11 Apr 8 – Apr 21 Jun 2 – Jun 27
Sweet Potato Jan 28 – Feb 11 Apr 15 – Apr 28 Jul 14 – Aug 13
Basil Jan 28 – Feb 11 Apr 1 – Apr 14 Jun 7 – Jul 7
Garden Sage Jan 28 – Feb 11 Mar 25 – Apr 7 Jun 3 – Jun 13
Parsley Jan 28 – Feb 11 Mar 25 – Apr 7 Sep 1 – Sep 14 Jun 3 – Jun 13
Spearmint Jan 28 – Feb 11 Mar 25 – Apr 7 May 24 – Jun 23
Calendula / Pot Marigold Jan 28 – Feb 11 Mar 11 – Mar 24 Sep 15 – Sep 28 Apr 30 – May 10
French Marigold Jan 28 – Feb 25 Apr 1 – Apr 14 May 16 – May 31
Sweet Alyssum Jan 28 – Feb 11 Mar 11 – Mar 24 Sep 15 – Sep 28 Apr 22 – May 6
Tomato Feb 4 – Feb 18 Apr 1 – Apr 14 May 26 – Jun 30
Bok Choy Feb 11 – Feb 25 Mar 11 – Mar 24 Sep 15 – Sep 28 Apr 10 – May 10
Collard Greens Feb 11 – Feb 25 Mar 11 – Mar 24 Aug 18 – Aug 31 May 10 – May 30
Kohlrabi Feb 11 – Feb 25 Mar 4 – Mar 17 Sep 8 – Sep 21 Apr 30 – May 10
Lettuce Feb 11 – Feb 25 Mar 4 – Mar 17 Sep 1 – Sep 14 Apr 30 – May 20
Spinach Feb 11 – Feb 18 Mar 4 – Mar 17 Sep 22 – Oct 5 May 1 – May 12
Swiss Chard Feb 11 – Feb 25 Mar 11 – Mar 24 Oct 13 – Oct 26 Apr 20 – May 5
Pea Feb 18 – Mar 3 Sep 8 – Sep 21 Apr 14 – May 4
Rhubarb Feb 18 – Mar 3 Feb 18 – Feb 17
Watermelon Feb 18 – Mar 11 Apr 8 – Apr 21 Jun 17 – Jul 12
Arugula Feb 25 – Mar 10 Sep 29 – Oct 12 Mar 27 – Apr 16
Asparagus Feb 25 – Mar 10 Feb 25 – Feb 24
Cucumber Feb 25 – Mar 11 Apr 8 – Apr 21 May 28 – Jun 17
Pumpkin Feb 25 – Mar 4 Apr 8 – Apr 21 Jul 2 – Aug 6
Turnip Feb 25 – Mar 10 Sep 8 – Sep 21 Apr 6 – May 11
Nasturtium Feb 25 – Mar 4 Apr 1 – Apr 14 May 26 – Jun 5
Beet Mar 4 – Mar 17 Sep 1 – Sep 14 Apr 23 – May 13
Carrot Mar 4 – Mar 17 Aug 25 – Sep 7 May 3 – May 23
Potato Mar 4 – Mar 17 May 13 – Jul 2
Radish Mar 4 – Mar 17 Sep 29 – Oct 12 Mar 25 – Apr 18
Sunflower Mar 4 – Mar 11 Apr 1 – Apr 14 Jun 10 – Jul 10
Parsnip Mar 11 – Mar 24 Jun 29 – Jul 19
Winter Squash (Butternut) Mar 11 – Mar 18 Apr 8 – Apr 21 Jun 27 – Jul 17
Cantaloupe (Muskmelon) Mar 11 – Mar 18 Apr 8 – Apr 21 Jun 15 – Jul 2
Strawberry Mar 11 – Mar 24 Apr 8 – Apr 10
Dill Mar 18 – Mar 31 Sep 1 – Sep 14 Apr 27 – May 12
Bush bean Mar 25 – Apr 7 Sep 1 – Sep 14 May 14 – May 24
Pole bean Mar 25 – Apr 7 May 22 – May 27
Sweet corn Mar 25 – Apr 7 May 24 – Jul 3
Borage Mar 25 – Apr 7 May 14 – May 24
Cilantro / Coriander Mar 25 – Apr 7 Sep 15 – Sep 28 May 9 – Jun 3
Summer squash / zucchini Apr 1 – Apr 14 May 6 – May 26
Okra Apr 8 – Apr 21 Jun 7 – Jun 17
Brussels Sprouts Jun 3 – Jun 16 Aug 4 – Aug 17 Aug 27 – Sep 21
Garlic Nov 10 – Nov 23

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One zone is not one climate. USDA hardiness zones are drawn from average winter minimum temperature and nothing else, so they do not determine frost dates. Two gardens in zone 7b can differ by two or three weeks depending on elevation, distance from water, and local topography. Treat this page as a starting schedule and adjust it to what your own garden has actually done. How these dates were derived →

Other zones

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Zone 7b questions

When is the last frost in zone 7b?
The median last spring frost in zone 7b is around Mar 25. That is a midpoint, not a deadline — in half of years the last freeze lands later, so wait one to two weeks past it before setting out tender crops like tomatoes, peppers and basil.
How long is the growing season in zone 7b?
About 229 frost-free days, from roughly Mar 25 to Nov 10. That matters most for long-season crops: check a variety's days to maturity against that number before you buy seed.
What should I plant first in zone 7b?
Hardy crops go in well before your last frost — leek, onion, kale, broccoli tolerate frost and can be sown while the soil is still cold. Tender crops wait until after Mar 25.
Is zone 7b the same everywhere?
No. Hardiness zones are drawn from winter minimum temperature alone, so two gardens in the same zone can have frost dates weeks apart — Atlanta and Dallas–Fort Worth are both 8a and differ by about 20 frost-free days. Elevation, coastline, and even the bottom of a slope versus the top all shift these dates.