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 24–Aug 14) in Portland, based on its local frost dates. Confidence 86%.
When will melon (cantaloupe/watermelon) be ready to harvest in Portland?
Expect to harvest from around early October (Oct 7–Nov 1) in Portland, based on its local frost dates. Confidence 80%.
When should I start melon (cantaloupe/watermelon) seeds indoors in Portland?
Start seeds indoors around mid April (Apr 20–May 11) in Portland, based on its local frost dates. Confidence 85%.
When can I transplant melon (cantaloupe/watermelon) outdoors in Portland?
Transplant outdoors around late July (Jul 24–Aug 14) in Portland, based on its local frost dates. Confidence 86%.
How long is the growing season in Portland?
Portland has roughly 165 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.