When to plant onions in Rhode Island

Plant out in Providence

Feb 28–Mar 21

Across Rhode Island the window opens between February 24 and March 11. Find your city below; the dates follow each town's own average last frost.

Start indoors, Providence: Jan 17–Feb 14
Plant out, Providence: Feb 28–Mar 21
Last frost, Providence: Apr 11

Start seeds indoors 8–12 weeks before the last frost; plant out 3–6 weeks before the last frost. Northern gardens need long-day varieties and southern gardens need short-day ones. A wrong pick gives small bulbs.

Onions planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

ProvidenceFeb 28–Mar 21

CranstonFeb 28–Mar 21

WarwickFeb 28–Mar 21

PawtucketMar 11–Apr 1

East ProvidenceFeb 28–Mar 21

WoonsocketMar 11–Apr 1

NewportFeb 24–Mar 17

Central FallsMar 11–Apr 1

Questions

When should I plant onions in Rhode Island?

In Providence, plant out from February 28 to March 21. Across Rhode Island the window opens between February 24 and March 11, depending on the local last frost.

How is this date worked out?

Start seeds indoors 8–12 weeks before the last frost; plant out 3–6 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Rhode Island

Onions in other states

Frost dates for every city in Rhode Island