Planting Calendar & Monthly Lists
Scroll to Map & Zone DescriptionNOTE: No Planting in Winter Months.
Extreme Minimum Temperate −31.7 to −28.9°C (−25 to −20°F)
Temperate with Mild Summers and Cold Winter
Indicative Towns: Anchorage, Alaska; Sioux Falls, South Dakota
Zone 4b includes semiarid steppe, alpine and humid continental (cool summer) climates and northern mountainous areas. It includes most of Alaska and northern areas of USA.
Zone 4 (a & b) has more opportunities for growing vegetables and herbs with a slightly extended growing season and warm summers. Start plants early indoors or purchase seedlings grown in a greenhouse. Adding a good layer of mulch and covering plants during last frosts can help more plants survive the cold winters.
Vegetables to add to Zone 2 & 3 lists for growing in Zone 4 include: Rhubarb, Okra,
Pumpkins,
Eggplant and Melons. Extra herbs to grow include: Angelica, Sage, Lemon balm,
Mint, Thyme and Winter savory.
Towns include:
Anchorage, Alaska
Brookings, South Dakota
Cornwall, Connecticut
Duluth, minnesota
Eden Prairie, Minnesota
Excelsior, Minnesota
Gaylord, Michigan
Hutchinson, Minnesota
Mitchell, South Dakota
Monticello, Minnesota
Mosinee, Wisconsin
New Ulm, Minnesota
Pierre, South Dakota
Red Wing, Minnesota
River Falls, Wisconsin
Riverton,
Wyoming
Rochester, Minnesota
Saint Paul, Minnesota
Sault Sainte Marie, Michigan
Schofield, Wisconsin
Sioux Falls,
South Dakota
Sparta, Wisconsin