Metro areas

Gardening in Wenatchee-East Wenatchee, WA

This metro spans USDA zones 6b to 7b, so there is no single zone for Wenatchee-East Wenatchee, WA and anyone who gives you one is rounding. 77% of its ZIP codes are zone 7a; the rest are not.

USDA zones 6b–7b 3 zones across 22 ZIP codes
ZIP codes 22 22 have a NOAA station within range
Weather stations 12 NOAA 1991–2020 normals, across 4,740 sq mi

Which zone you are in depends where you are

Wenatchee-East Wenatchee, WA covers 3 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 77% in zone 7a and wrong for the other 23%. Here is the actual split.

Zone ZIP codes Share  
7a 17 77%
6b 4 18%
7b 1 5%

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 April 4 – May 22
First fall freeze September 22 – October 28

Those are the earliest and latest medians among the 12 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 12 stations serving Wenatchee-East Wenatchee, WA it runs 121–208 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 79–87 °F , below the 90 °F point where cool-season crops reliably bolt.

When to start seeds in Wenatchee-East Wenatchee, WA

Every spring job for 63 crop dates, counted from this metro's own last spring freeze. Each is a range across all 12 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 7 – March 27 8 weeks before
Peppers Start indoors February 7 – March 27 8 weeks before
Broccoli Start indoors February 21 – April 10 6 weeks before
Cabbage Start indoors February 21 – April 10 6 weeks before
Collards Start indoors February 21 – April 10 6 weeks before
Kale Start indoors February 21 – April 10 6 weeks before
Leaf Lettuce Start indoors February 21 – April 10 6 weeks before
Peas Direct sow February 21 – April 10 6 weeks before
Spinach Direct sow February 21 – April 10 6 weeks before
Sweet Potato Start indoors February 21 – April 10 6 weeks before
Tomatoes Start indoors February 21 – April 10 6 weeks before
Bok Choy Start indoors February 28 – April 17 5 weeks before
Kohlrabi Start indoors February 28 – April 17 5 weeks before
Swiss Chard Start indoors February 28 – April 17 5 weeks before
Arugula Direct sow March 7 – April 24 4 weeks before
Baby Salad Greens Direct sow March 7 – April 24 4 weeks before
Beets Direct sow March 7 – April 24 4 weeks before
Green Onions Direct sow March 7 – April 24 4 weeks before
Mustard Greens Direct sow March 7 – April 24 4 weeks before
Okra Start indoors March 7 – April 24 4 weeks before
Radishes Direct sow March 7 – April 24 4 weeks before
Turnips Direct sow March 7 – April 24 4 weeks before
Cabbage Set out March 14 – May 1 3 weeks before
Carrots Direct sow March 14 – May 1 3 weeks before
Collards Direct sow March 14 – May 1 3 weeks before
Collards Set out March 14 – May 1 3 weeks before
Cucumbers Start indoors March 14 – May 1 3 weeks before
Green Onions Set out March 14 – May 1 3 weeks before
Kale Direct sow March 14 – May 1 3 weeks before
Kale Set out March 14 – May 1 3 weeks before
Kohlrabi Direct sow March 14 – May 1 3 weeks before
Kohlrabi Set out March 14 – May 1 3 weeks before
Leaf Lettuce Direct sow March 14 – May 1 3 weeks before
Pumpkins Start indoors March 14 – May 1 3 weeks before
Summer Squash Start indoors March 14 – May 1 3 weeks before
Winter Squash Start indoors March 14 – May 1 3 weeks before
Zucchini Start indoors March 14 – May 1 3 weeks before
Bok Choy Direct sow March 21 – May 8 2 weeks before
Bok Choy Set out March 21 – May 8 2 weeks before
Broccoli Set out March 21 – May 8 2 weeks before
Cilantro Direct sow March 21 – May 8 2 weeks before
Leaf Lettuce Set out March 21 – May 8 2 weeks before
Swiss Chard Direct sow March 21 – May 8 2 weeks before
Swiss Chard Set out March 21 – May 8 2 weeks before
Dill Direct sow March 28 – May 15 1 week before
Bush Beans Direct sow April 11 – May 29 1 week after
Cucumbers Set out April 11 – May 29 1 week after
Pumpkins Direct sow April 11 – May 29 1 week after
Pumpkins Set out April 11 – May 29 1 week after
Summer Squash Direct sow April 11 – May 29 1 week after
Summer Squash Set out April 11 – May 29 1 week after
Sweet Corn Direct sow April 11 – May 29 1 week after
Tomatoes Set out April 11 – May 29 1 week after
Winter Squash Direct sow April 11 – May 29 1 week after
Winter Squash Set out April 11 – May 29 1 week after
Zucchini Direct sow April 11 – May 29 1 week after
Zucchini Set out April 11 – May 29 1 week after
Cucumbers Direct sow April 18 – June 5 2 weeks after
Okra Direct sow April 18 – June 5 2 weeks after
Okra Set out April 18 – June 5 2 weeks after
Peppers Set out April 18 – June 5 2 weeks after
Southern Peas Direct sow April 18 – June 5 2 weeks after
Sweet Potato Set out April 18 – June 5 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 Wenatchee-East Wenatchee, WA

Of 74 perennial fruits, nuts, berries, vegetables and herbs, 58 come through the winter in zone 7a and only 51 in zone 6b. That is a different garden at each end of the same metro.

Zone ZIPs Survive Fail for being too warm
6b 4 51 of 74 0
7a 17 58 of 74 1
7b 1 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 12 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
Chelan, WA USC00451350 April 17 October 22 187 days
Chief Joseph Dam, WA USC00451400 April 26 October 11 167 days
Coulee Dam 1 SW, WA USC00451767 April 22 October 21 180 days
Entiat Fish Hatchery, WA USC00452563 April 5 October 24 200 days
Hartline, WA USC00453529 May 2 October 12 162 days
Leavenworth 3 S, WA USC00454572 May 10 September 30 142 days
Methow 2 S, WA USC00455326 April 21 October 15 177 days
Plain, WA USC00456534 May 22 September 22 121 days
Stehekin 4 NW, WA USC00458059 April 27 October 17 173 days
Waterville, WA USC00459012 May 14 October 1 140 days
Wenatchee Pangborn AP, WA USW00094239 April 8 October 24 200 days
Wenatchee, WA USC00459074 April 4 October 28 208 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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