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Plant nameZoneStart seeds indoors (spring/fall)Start seeds outdoors (spring/fall)Plant seedlings/transplants outdoors (spring/fall)Plant spacing# plants per person
Shiso3aApril 1-15On/around May 15 (after last frost)On/around May 15 (after last frost)10-15 inches1-2 for the household
Shiso3bApril 1-15On/around May 15 (after last frost)On/around May 15 (after last frost)10-15 inches1-2 for the household
Shiso4aApril 1-15On/around May 15 (after last frost)On/around May 15 (after last frost)10-15 inches1-2 for the household
Shiso4bApril 1-15On/around May 15 (after last frost)On/around May 15 (after last frost)10-15 inches1-2 for the household
Shiso5aMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso5bMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso6aMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso6bMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso7aMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso7bMarch 1-15On/around April 15 (after last frost)On/around April 15 (after last frost)10-15 inches1-2 for the household
Shiso8aFeb. 1-15On/around March 15 (after last frost)On/around March 15 (after last frost)10-15 inches1-2 for the household
Shiso8bFeb. 1-15On/around March 15 (after last frost)On/around March 15 (after last frost)10-15 inches1-2 for the household
Shiso9aDec. 15-Jan. 1On/around Feb. 15 (after last frost)On/around Feb. 15 (after last frost)10-15 inches1-2 for the household
Shiso9bDec. 15-Jan. 1On/around Feb. 15 (after last frost)On/around Feb. 15 (after last frost)10-15 inches1-2 for the household
Shiso10ayear-roundyear-roundyear-round10-15 inches1-2 for the household
Shiso10byear-roundyear-roundyear-round10-15 inches1-2 for the household
Shiso11ayear-roundyear-roundyear-round10-15 inches1-2 for the household
Shiso11byear-roundyear-roundyear-round10-15 inches1-2 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.

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