Metro areas

Gardening in Richmond, VA

This metro spans USDA zones 7a to 7b, so there is no single zone for Richmond, VA and anyone who gives you one is rounding. 89% of its ZIP codes are zone 7b; the rest are not.

USDA zones 7a–7b 2 zones across 98 ZIP codes
ZIP codes 98 98 have a NOAA station within range
Weather stations 17 NOAA 1991–2020 normals, across 4,364 sq mi

Which zone you are in depends where you are

Richmond, VA covers 2 hardiness zones. A guide that gives the metro one zone has picked whichever is largest and rounded everyone else into it — which is fine for the 89% in zone 7b and wrong for the other 11%. Here is the actual split.

Zone ZIP codes Share  
7b 87 89%
7a 11 11%

Zones are published per ZIP code, so yours is exact even though the metro's is not. The hardiness tool will tell you which one you are in.

Your freeze dates

Last spring freeze March 31 – April 23
First fall freeze October 21 – November 6

Those are the earliest and latest medians among the 17 stations serving this metro — not an average, and not one station standing in for the rest. Half of years freeze later than a station's own median.

The spread is the point. Even in a metro that is one hardiness zone throughout, its stations disagree about the last spring freeze. Hardiness zone and frost date measure different things — a zone is the average annual coldest night, a freeze date is when the season turns — and a place can be uniform in one and varied in the other. Use the tools below with your own ZIP rather than the ends of this range.

Your growing season

NOAA publishes a growing-season length for each station, and across the 17 stations serving Richmond, VA it runs 180–222 days . That figure is published, not computed from the two freeze dates — subtracting one from the other gives the wrong answer wherever a season crosses New Year. Mean summer high (June–August) runs 85–88 °F , below the 90 °F point where cool-season crops reliably bolt.

When to start seeds in Richmond, VA

Every spring job for 63 crop dates, counted from this metro's own last spring freeze. Each is a range across all 17 stations — the earliest and latest that job falls anywhere in the metro — because no one station speaks for the whole area.

Crop Job When Offset
Green Onions Start indoors February 3 – February 26 8 weeks before
Peppers Start indoors February 3 – February 26 8 weeks before
Broccoli Start indoors February 17 – March 12 6 weeks before
Cabbage Start indoors February 17 – March 12 6 weeks before
Collards Start indoors February 17 – March 12 6 weeks before
Kale Start indoors February 17 – March 12 6 weeks before
Leaf Lettuce Start indoors February 17 – March 12 6 weeks before
Peas Direct sow February 17 – March 12 6 weeks before
Spinach Direct sow February 17 – March 12 6 weeks before
Sweet Potato Start indoors February 17 – March 12 6 weeks before
Tomatoes Start indoors February 17 – March 12 6 weeks before
Bok Choy Start indoors February 24 – March 19 5 weeks before
Kohlrabi Start indoors February 24 – March 19 5 weeks before
Swiss Chard Start indoors February 24 – March 19 5 weeks before
Arugula Direct sow March 3 – March 26 4 weeks before
Baby Salad Greens Direct sow March 3 – March 26 4 weeks before
Beets Direct sow March 3 – March 26 4 weeks before
Green Onions Direct sow March 3 – March 26 4 weeks before
Mustard Greens Direct sow March 3 – March 26 4 weeks before
Okra Start indoors March 3 – March 26 4 weeks before
Radishes Direct sow March 3 – March 26 4 weeks before
Turnips Direct sow March 3 – March 26 4 weeks before
Cabbage Set out March 10 – April 2 3 weeks before
Carrots Direct sow March 10 – April 2 3 weeks before
Collards Direct sow March 10 – April 2 3 weeks before
Collards Set out March 10 – April 2 3 weeks before
Cucumbers Start indoors March 10 – April 2 3 weeks before
Green Onions Set out March 10 – April 2 3 weeks before
Kale Direct sow March 10 – April 2 3 weeks before
Kale Set out March 10 – April 2 3 weeks before
Kohlrabi Direct sow March 10 – April 2 3 weeks before
Kohlrabi Set out March 10 – April 2 3 weeks before
Leaf Lettuce Direct sow March 10 – April 2 3 weeks before
Pumpkins Start indoors March 10 – April 2 3 weeks before
Summer Squash Start indoors March 10 – April 2 3 weeks before
Winter Squash Start indoors March 10 – April 2 3 weeks before
Zucchini Start indoors March 10 – April 2 3 weeks before
Bok Choy Direct sow March 17 – April 9 2 weeks before
Bok Choy Set out March 17 – April 9 2 weeks before
Broccoli Set out March 17 – April 9 2 weeks before
Cilantro Direct sow March 17 – April 9 2 weeks before
Leaf Lettuce Set out March 17 – April 9 2 weeks before
Swiss Chard Direct sow March 17 – April 9 2 weeks before
Swiss Chard Set out March 17 – April 9 2 weeks before
Dill Direct sow March 24 – April 16 1 week before
Bush Beans Direct sow April 7 – April 30 1 week after
Cucumbers Set out April 7 – April 30 1 week after
Pumpkins Direct sow April 7 – April 30 1 week after
Pumpkins Set out April 7 – April 30 1 week after
Summer Squash Direct sow April 7 – April 30 1 week after
Summer Squash Set out April 7 – April 30 1 week after
Sweet Corn Direct sow April 7 – April 30 1 week after
Tomatoes Set out April 7 – April 30 1 week after
Winter Squash Direct sow April 7 – April 30 1 week after
Winter Squash Set out April 7 – April 30 1 week after
Zucchini Direct sow April 7 – April 30 1 week after
Zucchini Set out April 7 – April 30 1 week after
Cucumbers Direct sow April 14 – May 7 2 weeks after
Okra Direct sow April 14 – May 7 2 weeks after
Okra Set out April 14 – May 7 2 weeks after
Peppers Set out April 14 – May 7 2 weeks after
Southern Peas Direct sow April 14 – May 7 2 weeks after
Sweet Potato Set out April 14 – May 7 2 weeks after

The week offsets are conventional extension guidance and vary by variety; the freeze dates they are counted from are measured. For a single date rather than a range, run when do I start my seeds? with your own ZIP code.

What survives the winter changes across Richmond, VA

Of 74 perennial fruits, nuts, berries, vegetables and herbs, 58 come through the winter in zone 7a and only 56 in zone 7b. That is a different garden at each end of the same metro.

Zone ZIPs Survive Fail for being too warm
7a 11 58 of 74 1
7b 87 56 of 74 3

The last column is the counterintuitive one, and it is why the totals do not simply rise as the winters get milder. Most temperate fruit needs a documented number of hours below about 45 °F to break dormancy and set a crop, so an apple fails in a winter that is too warm; currants and rhubarb cook in the summer heat that comes with it. See the full list with reasons.

The 17 stations behind these numbers

Every figure above comes from these, and each is named so you can check it. Distances vary by ZIP code, so the tools report yours rather than this page guessing.

Station NOAA ID Last spring freeze First fall freeze Season
Amelia Courthouse, VA USC00440187 April 7 November 2 209 days
Ashland Hanover Co Muni AP, VA USW00093775 April 10 October 31 202 days
Ashland, VA USC00440327 April 10 October 29 201 days
Crozier, VA USC00442142 April 17 October 27 191 days
Disputanta, VA USC00442400 April 10 November 1 206 days
Emporia 1 Wnw, VA USC00442790 March 31 November 6 221 days
Ft Pickett, VA USC00441322 April 11 October 30 200 days
Hopewell, VA USC00444101 March 31 November 6 222 days
Norfolk Rich, VA USW00093773 April 6 November 1 210 days
Palmyra 3S, VA USC00446491 April 23 October 21 180 days
Petersburg, VA USC00446656 April 3 November 3 216 days
Richmond INTL AP, VA USW00013740 April 3 November 4 215 days
Sandston, VA USC00447541 April 7 November 1 206 days
Stony Creek 2 N, VA USC00448129 April 9 October 29 203 days
W Pt 2 NW, VA USC00449025 April 6 November 1 208 days
Wakefield 1Nw, VA USC00448800 April 12 October 30 200 days
Walkerton 2 NW, VA USC00448829 April 7 November 1 209 days

These are medians, not averages — NOAA publishes freeze dates as a probability distribution, and half of years freeze later than the date shown.

Work out your own dates

Each of these takes a ZIP code and answers for that ZIP alone, citing the station it used and how far away it is. There is a ZIP box in the header of every page.

Where these numbers come from

The hardiness zone is the USDA 2023 Plant Hardiness Zone Map, published per ZIP code by PRISM at Oregon State. The freeze dates are NOAA's 1991–2020 Climate Normals, read from every station whose normals cover a ZIP code in this metro. Nothing here is estimated, and no station stands in for another.

This page names no single station on purpose. Picking one to represent a metro sounds reasonable and is not: the station serving the most ZIP codes is an artifact of where ZIP centroids happen to fall, and it selects a lock on the Monongahela for Pittsburgh and a far southern suburb for Chicago. A range across every station is true; a single cited date for a whole metro is not.

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