When to plant kohlrabi in Reno, Nevada

March 31 – April 14

Transplant outdoors · typical Reno year

Climate basis: NOAA station Reno Wfo, NV (USC00266791), 3 mi (5 km) from downtown Reno (ZCTA 89501 centroid), elevation 4987 ft, on the 1991–2020 climate normals. Transplant kohlrabi outdoors from approximately the dates above, anchored to the median last spring 32°F freeze (April 28). One year in ten still freezes after May 19.

Last spring freezeApril 281-in-10 after May 19

First fall freezeOctober 271-in-10 before Oct 10

Frost-free season≈ 182 daysmedian at 32°F

Hard freeze, 28°Apr 10 – Nov 8kills even hardy greens

USDA zone7b5 to 10°F winter low — not frost timing

The Reno year

Start seeds indoorsFeb 17 – Mar 3

Transplant outdoorsMar 31 – Apr 14

Fall plantingSep 1 – Sep 29

indoors under lights
in the garden
frost-free season
1-in-10 years still freeze to May 19

Kohlrabi in Reno · freeze context from Reno Wfo, NV, 1991–2020 normals.

Every method, with its sources

Start seeds indoors

Feb 17 – Mar 3

Sow 4–6 weeks before the set-out window opens (UNH: time from seed to transplant 4–6 weeks). Anchored to the median last spring freeze (Apr 28). University of New Hampshire Extension

Transplant outdoors

Mar 31 – Apr 14

UNH: safe to set out 4 weeks before the last frost; Purdue's hardy class allows 4–6 weeks before. The later UNH start is used. Anchored to the median last spring freeze (Apr 28). University of New Hampshire Extension · Purdue University Extension

Fall planting

Sep 1 – Sep 29

Purdue Table 2: plant fall kohlrabi at least 4–8 weeks before the first fall frost. Anchored to the median first fall freeze (Oct 27). Purdue University Extension

These windows describe typical years (1991–2020 climate normals), not this year's forecast. Freezes happen outside them — especially in frost pockets, valleys, and urban edges. Watch the forecast before committing tender plants.

This week, not a typical year:

Crop rule sources (2)

University of New Hampshire Extension: Growing Vegetables: When to Plant Your Vegetable Garden [fact sheet] (accessed 2026-07-24)
Per-crop 'time from seed to transplant' and 'safe to set out in garden' relative to last frost.
Purdue University Extension: Indiana Vegetable Planting Calendar (HO-186-W) (accessed 2026-07-24)
Hardiness classes: hardy = plant 4-6 wk before last spring frost; semi-hardy = 2-4 wk before; tender = after average last frost; very tender = at least 2 wk after. Table 2: fall planting at least 4-8 wk before first fall frost.

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