Squash

Use our zone-based planting guide to know when to plant squash.

Plant name Zone Start seeds indoors Start seeds outdoors Plant seedlings/transplants outdoors Plant spacing # plants per person
Squash 3a April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 3-6 feet 1-2
Squash 3b April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 3-6 feet 1-2
Squash 4a April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 3-6 feet 1-2
Squash 4b April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 3-6 feet 1-2
Squash 5a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 5b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 6a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 6b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 7a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 7b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 3-6 feet 1-2
Squash 8a Feb. 1-15 On/around March 15 (after last frost) On/around March 15 (after last frost) 3-6 feet 1-2
Squash 8b Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 9a Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 9b Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 10a Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 10b Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 11a Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2
Squash 11b Feb. 1-March 1 March 1-April 15 March 1-April 15 3-6 feet 1-2

* Squash are vigorous, warm-weather growers. Plant outside after the threat of frost has passed. In most cases, 1-2 plants per person is sufficient.