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Zone 5B — March

What to Plant in March in Zone 5B

March in Zone 5B: 139 crops to start indoors, 106 to plant or direct sow outside, and 3 entering harvest window. Last frost averages April 17. Reference city: Kansas City, MO.
Updated May 14, 2026 · Frost data from NOAA 1991-2020 Climate Normals
139 Start Indoors
106 Plant Outside
3 Harvest

Start Indoors in March

Plant Type Start Indoors Transplant Outside Harvest Window
Alaska Early Pea legume Mar 20 Mar 27 May 21 – May 26
Black Salsify root_vegetable Mar 13 Mar 20 Jul 8 – Jul 23
Broad Windsor Fava Bean legume Mar 20 Mar 27 Jun 10 – Jun 20
Caraway herb Mar 20 Mar 27 Mar 27 – May 31
Cascadia Sugar Snap Pea legume Mar 20 Mar 27 May 31 – Jun 2
Charleston Wakefield Cabbage brassica Mar 13 Mar 27 Jun 10
Chervil herb Mar 20 Mar 27 May 1 – May 11
Crimson Cherry Rhubarb Root vegetable Mar 13 Mar 20 Mar 20 – Mar 19
Dandelion herb Mar 20 Mar 27 May 6 – May 26
Delicatesse Blue Kohlrabi brassica Mar 20 Mar 27 May 21 – May 26
Delicatesse White Kohlrabi brassica Mar 20 Mar 27 May 21 – May 26
Dutch Yellow Shallots allium Mar 13 Mar 20 Jun 18 – Jul 18
Early Jersey Wakefield Cabbage brassica Mar 13 Mar 27 May 31 – Jun 10
French Red Shallots allium Mar 13 Mar 20 Jun 18 – Jul 18
Giant Imperial Mix Larkspur Flowers flower Mar 20 Mar 27 Jul 5 – Jul 25
Green Arrow Pea legume Mar 20 Mar 27 May 31 – Jun 5
Hard Red Wheat Cover Crop cover crop Mar 20 Mar 27 Jun 10 – Jun 30
Holland Red Shallots allium Mar 13 Mar 20 Jun 18 – Jul 18
Little Marvel Pea legume Mar 20 Mar 27 May 26 – May 29
Mammoth Melting Sugar Snow Pea legume Mar 20 Mar 27 Jun 3 – Jun 9
Michihili Cabbage brassica Mar 13 Mar 27 Jun 5
Oregon Giant Snow Pea legume Mar 20 Mar 27 Jun 5 – Jun 9
Oregon Sugar Pod Snow Pea legume Mar 20 Mar 27 May 26 – Jun 3
Progress No. 9 Shelling Pea legume Mar 20 Mar 27 May 24 – May 28
Red Acre Cabbage brassica Mar 13 Mar 27 Jun 10 – Jun 15
Sugar Ann Snap Pea legume Mar 20 Mar 27 May 18 – May 22
Tatsoi lettuce Mar 6 Mar 20 Apr 14 – May 4
Vienna Purple Kohlrabi brassica Mar 20 Mar 27 May 21 – May 31
Vienna White Kohlrabi brassica Mar 20 Mar 27 May 31
Wando Pea legume Mar 20 Mar 27 May 29 – Jun 3
Alexandria Alpine Strawberry berry Mar 13 Apr 24 Aug 2 – Aug 22
All Season Cabbage brassica Mar 20 Apr 3 Jun 12 – Jun 22
All Year Round Cauliflower brassica Mar 20 Apr 3 Jun 7
Angelica herb Mar 20 Apr 17 Aug 15 – Sep 14
Baby's Breath Flowers flower Mar 27 Apr 17 Aug 15 – Sep 14
Barletta, Pearly White Onions root_vegetable Mar 20 Apr 17 Jul 1 – Jul 6
Black Beauty Zucchini squash Mar 31 Apr 28 Jun 12 – Jun 22
Blue Flax Flowers flower Mar 27 Apr 3 Jul 2 – Aug 1
Bouquet Dill herb Mar 27 Apr 3 May 23 – Jun 7
Brilliant Celeriac root_vegetable Mar 6 Apr 17 Aug 5 – Aug 15
Broadleaf Sage Herb herb Mar 27 Apr 24 Jul 8
Brunswick Cabbage brassica Mar 20 Apr 3 Jun 22 – Jul 2
Calabrese Broccoli brassica Mar 20 Apr 3 Jun 7
Cardoon (Purple Artichoke Thistle) vegetable Mar 27 Apr 24 Aug 22 – Oct 21
Carentan Leeks allium Mar 13 Apr 3 Jul 2 – Jul 22
Catmint herb Mar 27 Apr 17 Jul 16 – Aug 15
Chinese Forget-Me-Not Flowers flower Mar 27 Apr 3 Jun 7 – Jun 27
Copenhagen Cabbage brassica Mar 20 Apr 3 Jun 7
Crackerjack Mix Marigolds flower Mar 27 Apr 17 Jun 16 – Jul 1
Crimson Forest Bunching Onions root_vegetable Mar 27 Apr 17 Jun 16
Curly Parsley herb Mar 13 Apr 17 Jun 26 – Jul 6
Daikon Radishes root_vegetable Mar 27 Apr 3 May 18 – May 28
Danish Ballhead Cabbage brassica Mar 20 Apr 3 Jul 12 – Jul 22
Dark Green Italian Giant Parsley herb Mar 27 Apr 3 Jun 2 – Jun 17
Di Cicco Broccoli brassica Mar 20 Apr 3 Jun 7
Drumhead Cabbage brassica Mar 20 Apr 3 Jul 2 – Jul 12
Dukat Dill herb Mar 27 Apr 3 May 13 – May 23
Early Purple Broccoli brassica Mar 20 Apr 3 Jun 7
English White Daisy Flowers flower Mar 20 Apr 17 Aug 15 – Sep 14
Evergreen Bunching Onions root_vegetable Mar 27 Apr 17 Aug 15
Evergreen Parsley herb Mar 27 Apr 3 Jun 12 – Jun 27
Fenugreek herb Mar 27 Apr 3 May 8 – May 23
Flat-Leaf Parsley herb Mar 13 Apr 17 Jun 26 – Jul 16
Giant Maximum Mix Snapdragon Flowers flower Mar 20 Apr 17 Jul 6 – Jul 21
Giant Musselburgh Leeks allium Mar 13 Apr 3 Jul 12 – Jul 17
Glory of Enkhuizen Cabbage brassica Mar 20 Apr 3 Jul 2
Golden Acre Cabbage brassica Mar 20 Apr 3 Jun 7
Golden Celery vegetable Mar 20 Apr 24 Jul 18 – Jul 28
Grano Red Onions root_vegetable Mar 20 Apr 17 Aug 15
Grano White Onions root_vegetable Mar 20 Apr 17 Aug 15
Hamburg Rooted Parsley herb Mar 27 Apr 3 Jul 2 – Jul 22
Igloo Cauliflower brassica Mar 20 Apr 3 Jun 7 – Jun 12
Imperial Star Artichoke vegetable Mar 13 Apr 17 Jul 16 – Jul 26
Isis Candy cherry tomatoes tomato Mar 27 Apr 24 Jul 3 – Jul 13
Italian Oregano herb Mar 27 Apr 17 Jul 16 – Jul 26
Kellogg's Breakfast tomatoes tomato Mar 27 Apr 24 Jul 8 – Jul 18
Mammoth Dill herb Mar 27 Apr 3 May 18 – Jun 7
Mary Washington Asparagus vegetable Mar 27 Apr 3 Apr 2
Matt's Wild Cherry tomatoes tomato Mar 27 Apr 24 Jun 18 – Jun 28
Medium Red Clover Cover Crop cover crop Mar 27 Apr 3 Jun 2 – Jun 17
Millennium Asparagus vegetable Mar 27 Apr 3 Apr 3 – Apr 2
Mrs. Burns Lemon Basil herb Mar 27 Apr 24 Jun 23 – Jul 3
OG American Flag Leeks allium Mar 13 Apr 3 Jul 2 – Jul 12
Ox-Eye Daisy Flowers flower Mar 20 Apr 17 Apr 17 – Aug 30
Paul Robeson tomatoes tomato Mar 27 Apr 24 Jul 3 – Jul 18
Purple Passion Asparagus vegetable Mar 27 Apr 3 Apr 3 – Apr 2
Rapeseed Cover Crop cover crop Mar 27 Apr 3 May 18 – Jun 12
Rapini Broccoli Raab brassica Mar 27 Apr 3 Jun 7
Red Burgundy Onions root_vegetable Mar 20 Apr 17 Aug 5 – Aug 15
Roman Chamomile herb Mar 27 Apr 17 Jul 16 – Aug 15
Rue herb Mar 27 Apr 17 Jul 21 – Aug 20
Savoy Perfection Cabbage brassica Mar 20 Apr 3 Jul 2 – Jul 7
Scarlet Flax Flowers flower Mar 27 Apr 3 May 28 – Jun 12
Shasta Daisy Flowers flower Mar 13 Apr 17 Aug 15 – Apr 17
Shungiku (Edible Chrysanthemum) vegetable Mar 27 Apr 3 May 13 – May 28
Snowball Self-Blanche Cauliflower brassica Mar 20 Apr 3 Jun 7
Southport Red Globe Onions root_vegetable Mar 20 Apr 17 Aug 15
Southport White Globe Onions root_vegetable Mar 20 Apr 17 Aug 15
Spanish Sweet White Onions root_vegetable Mar 20 Apr 17 Aug 5 – Aug 15
Sparky Mix Marigolds flower Mar 27 Apr 17 Jun 11 – Jun 26
Sweet Marjoram herb Mar 27 Apr 24 Jul 8 – Jul 23
Sweet Woodruff herb Mar 27 Apr 17 Jun 26 – Jul 16
Tansy herb Mar 27 Apr 17 Jul 26 – Aug 25
Tendercrisp Celery vegetable Mar 20 Apr 24 Jul 18 – Aug 2
Thyme herb Mar 20 Apr 17 Jul 6 – Jul 21
Tropical Milkweed Flowers flower Mar 27 Apr 24 Jul 23 – Aug 22
Victoria Rhubarb vegetable Mar 13 Apr 3 Apr 2
Violetta Purple Cauliflower brassica Mar 20 Apr 3 Jun 7
White Lisbon Bunching Onions root_vegetable Mar 27 Apr 17 Jun 21
Wormwood herb Mar 27 Apr 17 Jul 26 – Aug 25
Yellow Sweet Blossom Clover Cover Crop cover crop Mar 27 Apr 3 Jun 2 – Jul 2
Anaheim Peppers pepper Mar 27 May 1 Jul 17 – Jul 25
Bhut Jolokia Ghost Pepper pepper Mar 27 May 1 Jul 30 – Aug 29
Big Jim Hatch Chile pepper Mar 27 May 1 Jul 10 – Jul 15
Broccolini brassica Mar 27 May 1 Jun 20 – Jul 10
Brussels Sprouts brassica Mar 27 May 1 Jul 25 – Aug 19
Caribbean Red Scotch Bonnet Pepper pepper Mar 27 May 1 Aug 4 – Aug 29
Carolina Reaper peppers pepper Mar 20 May 1 Jul 30 – Aug 29
Cayenne Peppers pepper Mar 27 May 1 Jul 25 – Aug 4
Cherry Bomb peppers pepper Mar 20 May 1 Jul 15 – Jul 20
Corno di Toro Pepper pepper Mar 27 May 1 Jul 15 – Jul 20
Datil peppers pepper Mar 20 May 1 Jul 30 – Aug 19
English Lavender Herb herb Mar 27 May 1 Jul 25
Fresno Peppers pepper Mar 27 May 1 Jul 15 – Jul 20
Green Cabbage brassica Mar 27 May 1 Jun 30 – Aug 9
Green Globe Artichoke vegetable Mar 27 May 1 May 1 – Apr 30
Habanero Pepper pepper Mar 27 May 8 Aug 6 – Sep 5
Hungarian Hot Wax Pepper pepper Mar 27 May 1 Jul 5 – Jul 15
Jalapeño Peppers pepper Mar 27 May 1 Jul 5 – Jul 15
Lemongrass Herb herb Mar 27 May 1 Jul 20 – Aug 9
Pinkeye Purple Hull Cowpea legume Mar 6 May 1 Jun 25 – Jul 8
Poblano Peppers pepper Mar 27 May 1 Jul 5 – Jul 15
Red Cabbage brassica Mar 27 May 1 Jul 10 – Aug 19
Romanesco brassica Mar 27 May 1 Jul 15 – Aug 9
Serrano Peppers pepper Mar 27 May 1 Jul 10 – Jul 20
Snow Crown Cauliflower brassica Mar 27 May 1 Jun 20 – Jun 30
Thai Hot Peppers pepper Mar 27 May 1 Jul 15 – Jul 25
Trinidad Moruga Scorpion peppers pepper Mar 20 May 1 Jul 20 – Aug 29
Waltham 29 Broccoli brassica Mar 27 May 1 Jul 15 – Jul 30

Plant Outside in March

Plant Type Action Target Date Harvest Window
Alaska Early Pea legume Transplant Mar 27 May 21 – May 26
All Year Round lettuce Direct Sow Mar 28 May 31 – Jun 9
America lettuce Direct Sow Mar 28 May 10 – May 22
Astro Arugula lettuce Direct Sow Mar 28 Apr 18 – May 7
Black Salsify root_vegetable Transplant Mar 20 Jul 8 – Jul 23
Black Seeded Simpson lettuce Direct Sow Mar 28 May 12 – May 13
Blonde de Paris lettuce Direct Sow Mar 28 May 17 – May 27
Bloomsdale Longstanding Spinach lettuce Direct Sow Mar 28 May 12 – May 19
Blue Curled Scotch lettuce Direct Sow Mar 28 May 22 – May 27
Bok Choy lettuce Direct Sow Mar 28 May 12 – May 27
Broad Windsor Fava Bean legume Transplant Mar 27 Jun 10 – Jun 20
Broadleaf Classic lettuce Direct Sow Mar 28 May 17 – May 27
Broadleaf Sorrel lettuce Direct Sow Mar 28 May 17 – May 27
Burgundy Boston lettuce Direct Sow Mar 28 May 17 – May 22
Buttercrunch lettuce Direct Sow Mar 28 May 13 – May 22
Butterhead Lettuce lettuce Direct Sow Mar 28 May 17 – Jun 1
Canary Yellow lettuce Direct Sow Mar 28 May 17 – May 27
Caraway herb Transplant Mar 27 Mar 27 – May 31
Cascadia Sugar Snap Pea legume Transplant Mar 27 May 31 – Jun 2
Charleston Wakefield Cabbage brassica Transplant Mar 27 Jun 10
Chervil herb Transplant Mar 27 May 1 – May 11
Chinese Broccoli (Gai Lan) brassica Direct Sow Mar 28 Apr 27 – May 17
Crimson Cherry Rhubarb Root vegetable Transplant Mar 20 Mar 20 – Mar 19
Crisphead lettuce Direct Sow Mar 28 Jun 4 – Jun 11
Curly Kale lettuce Direct Sow Mar 28 May 22 – Jun 1
Dandelion herb Transplant Mar 27 May 6 – May 26
Dark Green Romaine lettuce Direct Sow Mar 28 May 27 – Jun 6
Delicatesse Blue Kohlrabi brassica Transplant Mar 27 May 21 – May 26
Delicatesse White Kohlrabi brassica Transplant Mar 27 May 21 – May 26
Dutch Lamb's Lettuce lettuce Direct Sow Mar 28 May 7 – May 17
Dutch Yellow Shallots allium Transplant Mar 20 Jun 18 – Jul 18
Early Jersey Wakefield Cabbage brassica Transplant Mar 27 May 31 – Jun 10
Endive / Escarole lettuce Direct Sow Mar 28 May 12 – Jun 1
Florida Broadleaf lettuce Direct Sow Mar 28 May 7 – May 17
Fordhook Giant lettuce Direct Sow Mar 28 May 12 – May 22
French Lamb's Lettuce lettuce Direct Sow Mar 28 May 7 – May 17
French Red Shallots allium Transplant Mar 20 Jun 18 – Jul 18
Full Heart Batavian lettuce Direct Sow Mar 28 Jun 21 – Jun 26
Georgia Southern Collard Greens lettuce Direct Sow Mar 28 May 27 – Jun 16
Giant Imperial Mix Larkspur Flowers flower Transplant Mar 27 Jul 5 – Jul 25
Giant Red lettuce Direct Sow Mar 28 May 12
Green Arrow Pea legume Transplant Mar 27 May 31 – Jun 5
Green Ice lettuce Direct Sow Mar 28 May 12
Green Wave lettuce Direct Sow Mar 28 May 12
Hard Red Wheat Cover Crop cover crop Transplant Mar 27 Jun 10 – Jun 30
Holland Red Shallots allium Transplant Mar 20 Jun 18 – Jul 18
Hot Pink lettuce Direct Sow Mar 28 May 17 – May 27
Iceberg lettuce Direct Sow Mar 28 Jun 4 – Jun 11
Kagraner Sommer lettuce Direct Sow Mar 28 May 17 – May 25
Lacinato Kale lettuce Direct Sow Mar 28 May 27 – Jun 1
Large Leaf Sorrel lettuce Direct Sow Mar 28 May 17 – May 27
Leaf Lettuce Mix lettuce Direct Sow Mar 28 May 12 – May 22
Little Gem lettuce Direct Sow Mar 28 May 17 – May 23
Little Marvel Pea legume Transplant Mar 27 May 26 – May 29
Lollo Bionda lettuce Direct Sow Mar 28 May 17 – May 27
Lollo Rossa lettuce Direct Sow Mar 28 May 20 – May 23
Magenta Sunset lettuce Direct Sow Mar 28 May 22 – May 27
Mammoth Melting Sugar Snow Pea legume Transplant Mar 27 Jun 3 – Jun 9
Marvel of Four Seasons lettuce Direct Sow Mar 28 May 12 – May 27
Matador Viking lettuce Direct Sow Mar 28 May 12 – May 15
Mesclun Mix lettuce Direct Sow Mar 28 Apr 18 – Apr 27
Michihili Cabbage brassica Transplant Mar 27 Jun 5
Mizuna lettuce Direct Sow Mar 28 May 7 – May 17
Monstrueux de Viroflay lettuce Direct Sow Mar 28 May 12 – May 17
Morris Heading lettuce Direct Sow Mar 28 Jun 11 – Jun 16
Mustard Greens lettuce Direct Sow Mar 28 May 2 – May 17
Mâche (Corn Salad) lettuce Direct Sow Mar 28 May 27 – Jun 20
Napa Cabbage brassica Direct Sow Mar 28 Jun 6 – Jun 26
Noble Giant lettuce Direct Sow Mar 28 May 13 – May 17
Old Fashion lettuce Direct Sow Mar 28 May 12 – May 17
Orange lettuce Direct Sow Mar 28 May 12 – May 22
Oregon Giant Snow Pea legume Transplant Mar 27 Jun 5 – Jun 9
Oregon Sugar Pod Snow Pea legume Transplant Mar 27 May 26 – Jun 3
Premier lettuce Direct Sow Mar 28 May 17 – May 27
Progress No. 9 Shelling Pea legume Transplant Mar 27 May 24 – May 28
Radicchio lettuce Direct Sow Mar 28 May 27 – Jun 21
Rainbow Mix lettuce Direct Sow Mar 28 May 17 – May 27
Red Acre Cabbage brassica Transplant Mar 27 Jun 10 – Jun 15
Red Leaf Lettuce lettuce Direct Sow Mar 28 May 12 – May 22
Red Romaine lettuce Direct Sow Mar 28 May 27 – Jun 6
Red Russian Kale lettuce Direct Sow Mar 28 May 17 – May 27
Red Vein Sorrel lettuce Direct Sow Mar 28 May 17 – May 22
Romaine Lettuce lettuce Direct Sow Mar 28 Jun 1 – Jun 11
Ruby Red lettuce Direct Sow Mar 28 May 22 – May 27
Salad Bowl Green lettuce Direct Sow Mar 28 May 16 – May 17
Siberian Dwarf lettuce Direct Sow Mar 28 May 17 – May 22
Sugar Ann Snap Pea legume Transplant Mar 27 May 18 – May 22
Summer Bibb lettuce Direct Sow Mar 28 May 22 – May 27
Swiss Chard lettuce Direct Sow Mar 28 May 17 – May 27
Tango lettuce Direct Sow Mar 28 Apr 29 – May 7
Tatsoi lettuce Transplant Mar 20 Apr 14 – May 4
Tendergreen lettuce Direct Sow Mar 28 May 7 – May 17
Texas 1015Y SuperSweet Onion root_vegetable Transplant Mar 20 Jul 3 – Jul 13
Tom Thumb lettuce Direct Sow Mar 28 May 17 – Jun 6
Tuscany Black lettuce Direct Sow Mar 28 May 27 – Jun 11
Vates lettuce Direct Sow Mar 28 May 17 – May 22
Vates lettuce Direct Sow Mar 28 May 27 – Jun 11
Verona Red lettuce Direct Sow Mar 28 Jun 21 – Jun 28
Vienna Purple Kohlrabi brassica Transplant Mar 27 May 21 – May 31
Vienna White Kohlrabi brassica Transplant Mar 27 May 31
Wando Pea legume Transplant Mar 27 May 29 – Jun 3
White Boston lettuce Direct Sow Mar 28 May 7 – May 17
Winner Kohlrabi brassica Direct Sow Mar 28 May 12 – May 17
Winter Density lettuce Direct Sow Mar 28 May 21 – May 27
Winter Giant lettuce Direct Sow Mar 28 May 12 – May 17
Witloof White lettuce Direct Sow Mar 28 Jul 12 – Aug 4

Harvest in March

Plant Type Planted / Sown Harvest Window
Caraway herb Mar 27 Mar 27 – May 31
Crimson Cherry Rhubarb Root vegetable Mar 20 Mar 20 – Mar 19
Jewel Strawberries berry Apr 17 Mar 13 – May 22

Key Tasks for March in Zone 5B

  1. 1 Start 139 varieties indoors this month under grow lights or in a sunny south-facing window. Use a seed-starting mix and bottom heat (70–75°F) for best germination rates.
  2. 2 Harden off transplants before moving outdoors — set them outside in a sheltered spot for increasing hours over 7–10 days before planting in the ground.
  3. 3 Direct sow seeds at the recommended depth and spacing. Keep the seedbed consistently moist until germination is complete.
  4. 4 Check soil moisture before watering — stick a finger 2 inches into the soil. Water only when the soil is dry at that depth. Consistent moisture is more important than frequency.
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