What to plant in March in zone 1a
142 crops to start indoors, direct sow, transplant, or harvest in March in USDA hardiness zone 1a. Typical last spring frost around May 25, 2026, first fall frost around Aug 26, 2026 — exact dates vary by location within the zone.
Want exact March dates for your address in zone 1a, a drag-and-drop bed layout, and sowing reminders? Enter your ZIP:
Or get a printable zone 1a calendar and reminders by email:
Start indoors
Sow these under lights or on a windowsill now for transplants later.
- Agastache
- Alpine Strawberry
- Angel Wing Begonia
- Angelica
- Arabis
- Armeria
- Arroyo Lupine
- Arugula
- Asclepias
- Asparagus Fern
- Aster
- Basket of Gold
- Bee Balm
- Beet
- Begonia
- Bishop's Flower
- Bok Choy
- Bolivian Begonia
- Broccoli
- Broccoli Raab
- Brussels Sprouts
- Cabbage
- Cabbage Microgreens
- California Bluebell
- Campanula
- Canterbury Bells
- Cardoon
- Catnip
- Cauliflower
- China Aster
- Chinese Broccoli
- Chinese Cabbage
- Chinese Forget-Me-Not
- Chive
- Clasping Coneflower
- Coast Rock Cress
- Collard
- Columbine
- Corn Poppy
- Cottage Pink
- Creeping Thyme
- Delphinium
- Dracaena
- Dusty Miller
- Echinacea
- English Daisy
- European Columbine
- Evening Primrose
- Flowering Cabbage
- Flowering Kale
- Foxglove
- Garlic Chives
- Geranium
- Geum
- Hamburg Parsley
- Hartweg Lupine
- Heliotrope
- Heuchera
- Hollyhock
- Horehound
- Hybrid Columbine
- Hybrid Coneflower
- Hyssop
- Iberis
- Iceland Poppy
- Ivy Geranium
- Japanese Mugwort
- Johnny Jump-Up
- Kale
- Kale Microgreens
- Kniphofia
- Kohlrabi
- Lanceleaf Coreopsis
- Large-Flowered Evening Primrose
- Larkspur
- Lavatera
- Lavender
- Lemon Balm
- Lemon Mint
- Liatris
- Linaria
- Lovage
- Lunaria
- Lupine
- Malva
- Mexican Hat
- Milkweed (Common)
- Milkweed (Tropical)
- Myosotis
- New England Aster
- Oregano
- Oregano (Greek)
- Oregano Microgreens
- Oriental Poppy
- Ox-Eye Daisy
- Painted Sage
- Palace Purple Heuchera
- Pansy
- Parsley
- Parsley Microgreens
- Pennyroyal Mint
- Penstemon
- Pepper (Habanero)
- Pepper (Sweet & Hot)
- Phlox
- Plains Coreopsis
- Rocket Candytuft
- Rocky Mountain Penstemon
- Roman Chamomile
- Romanesco Broccoli
- Rue
- Russian Kale
- Russian Kale Microgreens
- Russian Sage
- Rutabaga
- Sage
- Salad Burnet
- Savory
- Shasta Daisy
- Sheep Sorrel
- Sheep Sorrel Microgreens
- Showy Evening Primrose
- Siberian Kale
- Smooth Aster
- Snapdragon
- Soapwort
- Sprenger Fern
- Stock Flower
- Sundial Lupine
- Sweet Pea
- Sweet Woodruff
- Tansy
- Tarragon
- Tat Soi
- Texas Bluebonnet
- Thyme
- Turnip
- Veined Catmint
- Veronica
- Viola
- Wax Begonia
- Wormwood
Keep going
Timings use NOAA 1991–2020 climate normals for a representative location (ZIP 99788) in zone 1a, computed with the same engine as GardenDraft’s in-app schedule. Guidance, not guarantees — your exact dates depend on your address.