Zone 3b Planting Calendar

Every listed crop, timed for zone 3b. Not sure this is your zone?Look it up by ZIP code.

This zone has a distinct planting calendar — windows below are sourced from www.longfield-gardens.com rather than a single frost date.

Vegetables & Herbs

PlantSpacingWindowMethodStart indoorsDirect sow / transplantEst. harvest
Garlic4 per sq ft—Direct sow—Jan 10–Jan 17~240 days after direct-sowing
Superhot Pepper (Ghost, Reaper, Scorpion)1 per sq ft—Start indoorsMar 14–Mar 21Jun 13–Jun 20~135 days after transplanting
Celery4 per sq ft—Start indoorsMar 21–Mar 28May 16–May 23~120 days after transplanting
Leek9 per sq ft—Start indoorsMar 21–Mar 28May 9–May 16~110 days after transplanting
Rosemary1 per sq ft—Start indoorsMar 21–Mar 28Jun 13–Jun 20~90 days after transplanting
Pepper1 per sq ft—Start indoorsApr 4–Apr 11Jun 13–Jun 20~75 days after transplanting
Onion9 per sq ft—Start indoorsApr 4–Apr 11May 9–May 16~100 days after transplanting
Eggplant1 per sq ft—Start indoorsApr 4–Apr 11Jun 13–Jun 20~75 days after transplanting
Sweet Potato~4 sq ft each—Start indoorsApr 4–Apr 11Jun 20–Jun 27~110 days after transplanting
Thyme4 per sq ft—Start indoorsApr 4–Apr 11Jun 6–Jun 13~90 days after transplanting
Oregano4 per sq ft—Start indoorsApr 4–Apr 11Jun 6–Jun 13~80 days after transplanting
Chives9 per sq ft—EitherApr 4–Apr 11May 16–May 23~60 days after planting
Parsley4 per sq ft—EitherApr 4–Apr 11May 16–May 23~75 days after planting
Sage1 per sq ft—Start indoorsApr 4–Apr 11Jun 13–Jun 20~75 days after transplanting
Collard Greens1 per sq ft—EitherApr 11–Apr 18May 9–May 16~70 days after planting
Tomato1 per sq ft—Start indoorsApr 18–Apr 25Jun 13–Jun 20~70 days after transplanting
Kale1 per sq ft—EitherApr 18–Apr 25May 9–May 16~60 days after planting
Pea8 per sq ft—Direct sow—Apr 18–Apr 25~60 days after direct-sowing
Broccoli1 per sq ft—Start indoorsApr 18–Apr 25May 16–May 23~65 days after transplanting
Cabbage1 per sq ft—Start indoorsApr 18–Apr 25May 16–May 23~70 days after transplanting
Basil4 per sq ft—Start indoorsApr 18–Apr 25Jun 13–Jun 20~60 days after transplanting
Cauliflower1 per sq ft—Start indoorsApr 18–Apr 25May 16–May 23~70 days after transplanting
Brussels Sprouts1 per sq ft—Start indoorsApr 18–Apr 25May 16–May 23~95 days after transplanting
Arugula9 per sq ft—Direct sow—Apr 25–May 2~40 days after direct-sowing
Bok Choy1 per sq ft—EitherApr 25–May 2May 30–Jun 6~50 days after planting
Kohlrabi4 per sq ft—EitherApr 25–May 2May 16–May 23~55 days after planting
Fennel (Florence/bulbing)1 per sq ft—EitherApr 25–May 2Jun 13–Jun 20~90 days after planting
Lettuce4 per sq ft—EitherMay 2–May 9May 16–May 23~45 days after planting
Spinach9 per sq ft—Direct sow—May 2–May 9~40 days after direct-sowing
Swiss Chard4 per sq ft—EitherMay 2–May 9May 16–May 23~55 days after planting
Radish16 per sq ft—Direct sow—May 2–May 9~25 days after direct-sowing
Okra1 per sq ft—EitherMay 2–May 9Jun 13–Jun 20~58 days after planting
Cucumber2 per sq ft—EitherMay 9–May 16Jun 6–Jun 13~55 days after planting
Zucchini1 per sq ft—EitherMay 9–May 16Jun 6–Jun 13~50 days after planting
Carrot16 per sq ft—Direct sow—May 9–May 16~70 days after direct-sowing
Beet9 per sq ft—Direct sow—May 9–May 16~55 days after direct-sowing
Cantaloupe~4 sq ft each—EitherMay 9–May 16Jun 13–Jun 20~80 days after planting
Turnip9 per sq ft—Direct sow—May 9–May 16~50 days after direct-sowing
Mustard Greens4 per sq ft—Direct sow—May 9–May 16~40 days after direct-sowing
Cilantro9 per sq ft—Direct sow—May 16–May 23~50 days after direct-sowing
Potato1 per sq ft—Direct sow—May 16–May 23~90 days after direct-sowing
Scallion (Green Onion)9 per sq ft—Direct sow—May 16–May 23~60 days after direct-sowing
Dill4 per sq ft—Direct sow—May 23–May 30~55 days after direct-sowing
Winter Squash~4 sq ft each—Direct sow—Jun 6–Jun 13~100 days after direct-sowing
Pumpkin~4 sq ft each—Direct sow—Jun 6–Jun 13~110 days after direct-sowing
Bush Beans9 per sq ft—Direct sow—Jun 6–Jun 13~55 days after direct-sowing
Sweet Corn1 per sq ft—Direct sow—Jun 6–Jun 13~75 days after direct-sowing
Watermelon~4 sq ft each—Direct sow—Jun 13–Jun 20~85 days after direct-sowing

Flowers

PlantSpacingWindowMethodStart indoorsDirect sow / transplantEst. bloom
Tulip7 per sq ft—Direct sow—Sep–Oct~180 days after direct-sowing
Daffodil (Narcissus)5 per sq ft—Direct sow—Sep–Nov~150 days after direct-sowing
Crocus12 per sq ft—Direct sow—Sep–Nov~150 days after direct-sowing
Ornamental Allium5 per sq ft—Direct sow—Sep–Nov~195 days after direct-sowing
Pansy / Viola2 per sq ft—Start indoorsMar 7–Mar 14May 16–May 23~65 days after transplanting
Vinca (Madagascar Periwinkle)1 per sq ft—Start indoorsMar 21–Mar 28Jun 13–Jun 20~80 days after transplanting
Petunia1 per sq ft—Start indoorsMar 28–Apr 4Jun 13–Jun 20~70 days after transplanting
Snapdragon2 per sq ft—Start indoorsMar 28–Apr 4May 23–May 30~90 days after transplanting
Purple Coneflower~4 sq ft each—EitherMar 28–Apr 4Jun 13–Jun 20~365 days after planting
Salvia (Scarlet Sage)1 per sq ft—Start indoorsApr 4–Apr 11Jun 13–Jun 20~80 days after transplanting
Calendula1 per sq ft—EitherApr 11–Apr 18May 16–May 23~50 days after planting
Black-Eyed Susan1 per sq ft—EitherApr 11–Apr 18May 9–May 16~70 days after planting
Bachelor's Button (Cornflower)3 per sq ft—EitherApr 11–Apr 18May 16–May 23~75 days after planting
Sweet Alyssum3 per sq ft—EitherApr 11–Apr 18May 30–Jun 6~40 days after planting
Gaillardia (Blanket Flower)1 per sq ft—EitherApr 11–Apr 18Jun 6–Jun 13~80 days after planting
Portulaca (Moss Rose)1 per sq ft—EitherApr 11–Apr 18Jun 6–Jun 13~60 days after planting
Celosia2 per sq ft—EitherApr 11–Apr 18Jun 6–Jun 13~80 days after planting
Gomphrena (Globe Amaranth)1 per sq ft—Start indoorsApr 11–Apr 18Jun 6–Jun 13~90 days after transplanting
Angelonia (Summer Snapdragon)2 per sq ft—Start indoorsApr 11–Apr 18Jun 13–Jun 20~98 days after transplanting
Cleome (Spider Flower)1 per sq ft—EitherApr 11–Apr 18Jun 13–Jun 20~75 days after planting
Marigold4 per sq ft—EitherApr 18–Apr 25Jun 6–Jun 13~50 days after planting
Sweet Pea2 per sq ft—Direct sow—Apr 18–Apr 25~85 days after direct-sowing
Cosmos1 per sq ft—EitherApr 25–May 2Jun 6–Jun 13~70 days after planting
Moonflower2 per sq ft—EitherApr 25–May 2May 30–Jun 6~90 days after planting
Zinnia1 per sq ft—EitherMay 2–May 9Jun 6–Jun 13~65 days after planting
Larkspur1 per sq ft—Direct sow—May 2–May 9~95 days after direct-sowing
Hollyhock~4 sq ft each—Direct sow—May 16–May 23~180 days after direct-sowing
California Poppy2 per sq ft—Direct sow—May 16–May 23~80 days after direct-sowing
Lupine~2 sq ft each—Direct sow—May 16–May 23~80 days after direct-sowing
Gladiolus2 per sq ft—Direct sow—May 16–May 23~90 days after direct-sowing
Ranunculus5 per sq ft—Direct sow—May 23–May 30~105 days after direct-sowing
Sunflower~2 sq ft each—Direct sow—May 30–Jun 6~80 days after direct-sowing
Hyacinth5 per sq ft—Direct sow—May 30–Jun 6~150 days after direct-sowing
Dutch Iris4 per sq ft—Direct sow—May 30–Jun 6~210 days after direct-sowing
Nasturtium1 per sq ft—Direct sow—Jun 6–Jun 13~55 days after direct-sowing
Four O'Clock~2 sq ft each—Direct sow—Jun 6–Jun 13~70 days after direct-sowing
Verbena~2 sq ft each—Direct sow—Jun 6–Jun 13~80 days after direct-sowing
Desert Marigold1 per sq ft—Direct sow—Jun 6–Jun 13~75 days after direct-sowing
Morning Glory~4 sq ft each—Direct sow—Jun 13–Jun 20~75 days after direct-sowing
Dahlia1 per sq ft—Direct sow—Jun 13–Jun 20~90 days after direct-sowing
Lantana~4 sq ft each—Buy as a start—Jun 13–Jun 20~90 days after transplanting
Hyacinth Bean Vine1 per sq ft—Direct sow—Jun 20–Jun 27~90 days after direct-sowing