When to plant melon (cantaloupe/watermelon) in Portland
Common questions
When can I sow melon (cantaloupe/watermelon) outdoors in Portland?
Direct-sow around late July (Jul 30–Aug 20) in Portland, based on its local frost dates. Confidence 85%.
When will melon (cantaloupe/watermelon) be ready to harvest in Portland?
Expect to harvest from around mid October (Oct 13–Nov 7) in Portland, based on its local frost dates. Confidence 79%.
When should I start melon (cantaloupe/watermelon) seeds indoors in Portland?
Start seeds indoors around late February (Feb 24–Mar 17) in Portland, based on its local frost dates. Confidence 84%.
When can I transplant melon (cantaloupe/watermelon) outdoors in Portland?
Transplant outdoors around late July (Jul 30–Aug 20) in Portland, based on its local frost dates. Confidence 85%.
How long is the growing season in Portland?
Portland has roughly 266 frost-free days, which is enough time to grow melon (cantaloupe/watermelon) to maturity outdoors.
Sow melon (cantaloupe/watermelon) 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 Portland's frost dates.