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Seed starting calendar for Zone 3

Zone 3's last spring frost lands around May 15, and every date below is counted back from it. Sow indoors in the window shown, then move the seedlings out once the transplant date arrives.

Short, cool season. Start most warm crops indoors and protect from late frosts.

Seed starting calendar for Zone 3
CropStart indoorsMove outside
OnionMar 6 to Mar 20May 1 to May 15
LeekMar 6 to Mar 20May 1 to May 15
CeleryMar 6 to Mar 20May 15 to May 29
PepperMar 20 to Apr 3May 29 to Jun 12
SageMar 20 to Apr 3May 15 to May 29
EggplantMar 20 to Apr 3May 29 to Jun 12
Hot PepperMar 20 to Apr 3May 29 to Jun 12
TomatoApr 3 to Apr 17May 22 to Jun 5
KaleApr 3 to Apr 17May 1 to May 15
BroccoliApr 3 to Apr 17May 1 to May 15
CabbageApr 3 to Apr 17May 1 to May 15
MarigoldApr 3 to Apr 17May 15 to May 29
ParsleyApr 3 to Apr 17May 1 to May 15
OreganoApr 3 to Apr 17May 15 to May 29
ChivesApr 3 to Apr 17May 1 to May 15
CauliflowerApr 3 to Apr 17May 1 to May 15
TomatilloApr 3 to Apr 17May 22 to Jun 5
Collard GreensApr 3 to Apr 17May 1 to May 15
BasilApr 17 to May 1May 22 to Jun 5
Brussels SproutsApr 17 to May 1May 29 to Jun 12

Other zones

Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10Zone 11

Plant at the right time this season

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