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Shiso

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

Plant name Zone Start seeds indoors (spring/fall) Start seeds outdoors (spring/fall) Plant seedlings/transplants outdoors (spring/fall) Plant spacing # plants per person
Shiso 3a April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 3b April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 4a April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 4b April 1-15 On/around May 15 (after last frost) On/around May 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 5a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 5b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 6a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 6b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 7a March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 7b March 1-15 On/around April 15 (after last frost) On/around April 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 8a Feb. 1-15 On/around March 15 (after last frost) On/around March 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 8b Feb. 1-15 On/around March 15 (after last frost) On/around March 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 9a Dec. 15-Jan. 1 On/around Feb. 15 (after last frost) On/around Feb. 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 9b Dec. 15-Jan. 1 On/around Feb. 15 (after last frost) On/around Feb. 15 (after last frost) 10-15 inches 1-2 for the household
Shiso 10a year-round year-round year-round 10-15 inches 1-2 for the household
Shiso 10b year-round year-round year-round 10-15 inches 1-2 for the household
Shiso 11a year-round year-round year-round 10-15 inches 1-2 for the household
Shiso 11b year-round year-round year-round 10-15 inches 1-2 for the household

* Shiso is only hardy to Zones 10 and 11, and is grown as an annual elsewhere. Start indoors 4-6 weeks before the average last frost date, or sow or transfer seedlings outdoors after the average last frost date.