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Zone 6b planting calendar and frost dates

In USDA hardiness zone 6b, the average last spring frost is Apr 24 and the average first fall frost is Oct 19, leaving about 178 frost-free days. To be 90% sure of no later frost, wait until about May 10 to plant tender crops. These are medians of 138 NOAA weather stations in zone 6b; their last-frost dates range from Apr 4 to Jun 13.

What to plant each month in zone 6b

January

Lavender (start indoors), Begonias (start indoors)

February

Tomatoes (start indoors), Bell peppers (start indoors), Kale (start indoors), Broccoli (start indoors), Cauliflower (start indoors), Cabbage (start indoors), Brussels sprouts (start indoors), Onions (start indoors), Basil (start indoors), Sage (start indoors), Coleus (start indoors), Marigolds (start indoors), Foxglove (start indoors), Coneflowers (start indoors), Bee balm (start indoors)

March

Potatoes (plant), Watermelon (start indoors), Peas (plant), Lettuce (start indoors), Lettuce (plant), Spinach (plant), Kale (plant), Cabbage (plant), Beets (plant), Radishes (plant), Onions (plant), Asparagus (plant), Strawberries (plant), Blueberries (plant), Blackberries (plant), Dahlias (start indoors), Caladiums (start indoors), Rose bushes (plant), Wildflower seeds (plant)

April

Broccoli (plant), Cauliflower (plant), Brussels sprouts (plant), Carrots (plant), Cilantro (plant), Dill (plant), Sage (plant), Borage (plant), Catmint (plant), Gladiolus (plant), Marigolds (plant), Cosmos (plant), Mums (plant), Hydrangeas (plant), Foxglove (plant), Coneflowers (plant), Bee balm (plant), Hostas (plant), Sedum (plant)

May

Tomatoes (plant), Bell peppers (plant), Pumpkins (plant), Cucumbers (plant), Okra (plant), Zucchini (plant), Watermelon (plant), Green beans (plant), Sweet corn (plant), Sweet potatoes (plant), Basil (plant), Lavender (plant), Dahlias (plant), Caladiums (plant), Begonias (plant), Coleus (plant), Zinnias (plant), Sunflowers (plant), Lantana (plant), Jasmine (plant), Grass seed (plant)

June

Brussels sprouts (plant for fall)

July

Peas (plant for fall), Kale (plant for fall), Broccoli (plant for fall), Cauliflower (plant for fall), Cabbage (plant for fall), Carrots (plant for fall)

August

Green beans (plant for fall), Lettuce (plant for fall), Spinach (plant for fall), Beets (plant for fall), Cilantro (plant for fall), Sage (plant for fall), Lavender (plant for fall), Catmint (plant for fall), Blueberries (plant for fall), Mums (plant for fall), Hydrangeas (plant for fall), Rose bushes (plant for fall), Iris (plant), Foxglove (plant for fall), Coneflowers (plant for fall), Bee balm (plant for fall), Sedum (plant for fall), Grass seed (plant for fall)

September

Radishes (plant for fall), Strawberries (plant for fall), Daffodils (plant), Peonies (plant), Hostas (plant for fall)

October

Garlic (plant), Tulips (plant), Wildflower seeds (plant for fall)

Zone 6b planting dates for every plant

PlantStart indoorsPlant outdoorsFall planting
TomatoesFeb 27 – Mar 13May 1 – May 15–
Bell peppersFeb 13 – Feb 27May 8 – May 22–
Potatoes–Mar 27 – Apr 17–
Pumpkins–May 1 – May 15–
Cucumbers–May 1 – May 15–
Okra–May 8 – May 29–
Zucchini–May 1 – May 15–
WatermelonMar 27 – Apr 3May 8 – May 22–
Green beans–May 1 – May 15Aug 3 – Aug 17
Sweet corn–May 1 – May 15–
Sweet potatoes–May 15 – May 29–
Peas–Mar 13 – Apr 3Jul 27 – Aug 17
LettuceMar 13 – Mar 27Mar 27 – Apr 17Aug 24 – Sep 14
Spinach–Mar 13 – Apr 3Aug 24 – Sep 14
KaleFeb 27 – Mar 13Mar 20 – Apr 10Jul 27 – Aug 17
BroccoliFeb 27 – Mar 13Apr 3 – Apr 17Jul 20 – Aug 10
CauliflowerFeb 27 – Mar 13Apr 10 – Apr 24Jul 20 – Aug 10
CabbageFeb 27 – Mar 13Mar 27 – Apr 10Jul 13 – Aug 3
Brussels sproutsFeb 27 – Mar 13Apr 3 – Apr 17Jun 29 – Jul 20
Carrots–Apr 3 – Apr 24Jul 27 – Aug 10
Beets–Mar 27 – Apr 17Aug 10 – Aug 24
Radishes–Mar 13 – Apr 10Sep 7 – Sep 21
OnionsFeb 13 – Feb 27Mar 27 – Apr 10–
Garlic––Oct 19 – Nov 16
Asparagus–Mar 27 – Apr 17–
BasilFeb 27 – Mar 13May 1 – May 15–
Cilantro–Apr 10 – May 1Aug 24 – Sep 21
Dill–Apr 24 – May 8–
SageFeb 27 – Mar 13Apr 24 – May 15Aug 24 – Sep 7
LavenderJan 30 – Feb 13May 1 – May 22Aug 10 – Aug 24
Borage–Apr 24 – May 8–
Catmint–Apr 24 – May 15Aug 24 – Sep 7
Strawberries–Mar 27 – Apr 17Sep 7 – Sep 21
Blueberries–Mar 27 – Apr 17Aug 24 – Sep 21
Blackberries–Mar 27 – Apr 17–
Tulips––Oct 5 – Nov 16
Daffodils––Sep 21 – Nov 2
Gladiolus–Apr 24 – May 8–
DahliasMar 13 – Mar 27May 1 – May 15–
CaladiumsMar 13 – Mar 27May 15 – May 29–
BegoniasJan 30 – Feb 27May 1 – May 15–
ColeusFeb 13 – Feb 27May 8 – May 22–
MarigoldsFeb 27 – Mar 13Apr 24 – May 8–
Zinnias–May 1 – May 15–
Sunflowers–May 1 – May 15–
Cosmos–Apr 24 – May 8–
Mums–Apr 24 – May 15Aug 24 – Sep 7
Lantana–May 8 – May 22–
Hydrangeas–Apr 24 – May 8Aug 24 – Sep 7
Rose bushes–Mar 27 – Apr 24Aug 24 – Sep 7
Peonies––Sep 7 – Oct 19
Iris––Aug 10 – Sep 7
FoxgloveFeb 13 – Feb 27Apr 10 – May 1Aug 24 – Sep 7
ConeflowersFeb 13 – Feb 27Apr 24 – May 15Aug 24 – Sep 7
Bee balmFeb 13 – Feb 27Apr 24 – May 15Aug 24 – Sep 7
Hostas–Apr 10 – May 8Sep 7 – Sep 21
Sedum–Apr 24 – May 15Aug 24 – Sep 7
Jasmine–May 8 – May 22–
Wildflower seeds–Mar 27 – Apr 17Oct 19 – Nov 30
Grass seed–May 22 – Jun 19Aug 17 – Sep 7

Places in zone 6b

Weather stations used for this zone include . Paul 4 Ne, AK; Akron Canton, OH; Akron Fulton, OH; Altoona Blair, PA; Alturas, CA; Andover Aeroflex, NJ; Baker, OR; Baker 5 W, NV; Battle Mountain 4Se, NV; Beckley Raleigh, WV; Bedford 5 Wnw, IN; Bedford Hanscom, MA; Belleville Siu Rsch, IL; Benton Harbor, MI; Beverly, MA; Bloomington Monroe, IN; Blue Hill, MA; Brigham 28 Wnw, UT; Buffalo, NY; Burley, ID; Cedar, UT; Charles, MO; Cincinnati, OH; Cincinnati Lunken, OH and 114 more.

Zone 6b frost dates by state: Alaska · Arizona · California · Colorado · Connecticut · Idaho · Illinois · Indiana · Kansas · Kentucky · Massachusetts · Michigan · Missouri · Nevada · New Jersey · New Mexico · New York · Ohio · Oklahoma · Oregon · Pennsylvania · Rhode Island · Texas · Utah · Washington · West Virginia

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