When to plant winter squash / pumpkin in San Bernardino
Common questions
When can I sow winter squash / pumpkin outdoors in San Bernardino?
Direct-sow around early April (Apr 10–May 1) in San Bernardino, based on its local frost dates. Confidence 76%.
When will winter squash / pumpkin be ready to harvest in San Bernardino?
Expect to harvest from around early July (Jul 4–Aug 8) in San Bernardino, based on its local frost dates. Confidence 70%.
When should I start winter squash / pumpkin seeds indoors in San Bernardino?
Start seeds indoors around early March (Mar 1–Mar 22) in San Bernardino, based on its local frost dates. Confidence 74%.
When can I transplant winter squash / pumpkin outdoors in San Bernardino?
Transplant outdoors around early April (Apr 10–May 1) in San Bernardino, based on its local frost dates. Confidence 76%.
How long is the growing season in San Bernardino?
San Bernardino has roughly 284 frost-free days, which is enough time to grow winter squash / pumpkin to maturity outdoors.
Sow winter squash / pumpkin 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and San Bernardino's frost dates.