When to plant radishes in New Hampshire

Radishes
Sow outdoors in Manchester
Mar 26–May 7

Across New Hampshire the window opens between March 25 and April 9. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Manchester
Mar 26–May 7
Fall planting, Manchester
Aug 30–Sep 13
Last frost, Manchester
Apr 30

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. The fastest crop in the garden. Sow a short row every week in spring and fall.

Radishes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
ManchesterMar 26–May 7
NashuaMar 25–May 6
ConcordApr 3–May 15
DoverMar 29–May 10
RochesterMar 26–May 7
KeeneApr 9–May 21
PortsmouthMar 30–May 11
DerryMar 26–May 7

Questions

When should I plant radishes in New Hampshire?

In Manchester, sow outdoors from March 26 to May 7. Across New Hampshire the window opens between March 25 and April 9, depending on the local last frost.

How is this date worked out?

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for New Hampshire

Radishes in other states

Frost dates for every city in New Hampshire