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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
Dianthus3aMarch 15-April 1On/around May 15 (after last frost)On/around May 15 (after last frost)8-12 inchesn/a
Dianthus3bMarch 15-April 1On/around May 15 (after last frost)On/around May 15 (after last frost)8-12 inchesn/a
Dianthus4aMarch 15-April 1On/around May 15 (after last frost)On/around May 15 (after last frost)8-12 inchesn/a
Dianthus4bMarch 15-April 1On/around May 15 (after last frost)On/around May 15 (after last frost)8-12 inchesn/a
Dianthus5aFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus5bFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus6aFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus6bFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus7aFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus7bFeb. 15-March 1On/around April 15 (after last frost)On/around April 15 (after last frost)8-12 inchesn/a
Dianthus8aJan. 15-Feb. 1On/around March 15 (after last frost)On/around March 15 (after last frost)8-12 inchesn/a
Dianthus8bJan. 15-Feb. 1On/around March 15 (after last frost)On/around March 15 (after last frost)8-12 inchesn/a
Dianthus9a6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a
Dianthus9b6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a
Dianthus10a6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a
Dianthus10b6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a
Dianthus11a6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a
Dianthus11b6-8 weeks before planting outdoorsyear-roundyear-round8-12 inchesn/a

*Some varieties may grow as short-lived perennials in certain Zones. Consult the plant tag for specifics. Start seeds indoors 6-8 weeks before the average last frost date or direct sow or plant seedlings after the threat of frost has passed. Some varieties can tolerate a light frost.

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