Zone 4A — March
What to Plant in March in Zone 4A
March in Zone 4A:
122 crops to start indoors,
0 to plant or direct sow outside, and
0 entering harvest window.
Last frost averages May 14. Reference city: Fargo, ND.
122 Start Indoors
0 Plant Outside
0 Harvest
Start Indoors in March
| Plant | Type | Start Indoors | Transplant Outside | Harvest Window |
|---|---|---|---|---|
| All Season Cabbage | brassica | Mar 26 | Apr 30 | Jul 9 – Jul 19 |
| All Year Round Cauliflower | brassica | Mar 26 | Apr 30 | Jul 4 |
| Brunswick Cabbage | brassica | Mar 26 | Apr 30 | Jul 29 |
| Calabrese Broccoli | brassica | Mar 26 | Apr 30 | Jul 4 |
| Carentan Leeks | allium | Mar 12 | Apr 30 | Jul 29 – Aug 18 |
| Charleston Wakefield Cabbage | brassica | Mar 19 | Apr 23 | Jul 2 |
| Copenhagen Cabbage | brassica | Mar 26 | Apr 30 | Jul 4 |
| Danish Ballhead Cabbage | brassica | Mar 26 | Apr 30 | Aug 8 – Aug 18 |
| Di Cicco Broccoli | brassica | Mar 26 | Apr 30 | Jun 14 – Jun 17 |
| Drumhead Cabbage | brassica | Mar 26 | Apr 30 | Jul 29 – Aug 8 |
| Early Jersey Wakefield Cabbage | brassica | Mar 19 | Apr 23 | Jun 27 – Jul 7 |
| Early Purple Broccoli | brassica | Mar 26 | Apr 30 | Jul 4 |
| Giant Musselburgh Leeks | allium | Mar 12 | Apr 30 | Aug 13 |
| Glory of Enkhuizen Cabbage | brassica | Mar 26 | Apr 30 | Jul 29 |
| Golden Acre Cabbage | brassica | Mar 26 | Apr 30 | Jul 4 |
| Igloo Cauliflower | brassica | Mar 26 | Apr 30 | Jul 4 – Jul 9 |
| Michihili Cabbage | brassica | Mar 19 | Apr 23 | Jul 2 |
| OG American Flag Leeks | allium | Mar 12 | Apr 30 | Jul 29 – Aug 8 |
| Red Acre Cabbage | brassica | Mar 19 | Apr 23 | Jul 7 – Jul 12 |
| Savoy Perfection Cabbage | brassica | Mar 26 | Apr 30 | Jul 29 – Aug 3 |
| Snowball Self-Blanche Cauliflower | brassica | Mar 26 | Apr 30 | Jul 4 |
| Victoria Rhubarb | vegetable | Mar 12 | Apr 30 | Perennial — see plant page |
| Violetta Purple Cauliflower | brassica | Mar 26 | Apr 30 | Jul 4 |
| Aji Amarillo Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 25 |
| Aji Dulce Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 15 |
| Alexandria Alpine Strawberry | berry | Mar 5 | May 21 | Perennial — see plant page |
| Anaheim Peppers | pepper | Mar 26 | May 28 | Aug 13 – Aug 21 |
| Ancho Grande Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Angelica | herb | Mar 12 | May 14 | Aug 2 – Aug 12 |
| Barletta, Pearly White Onions | allium | Mar 12 | May 14 | Jul 28 – Aug 2 |
| Bhut Jolokia Ghost Pepper | pepper | Mar 19 | May 28 | Aug 26 – Sep 25 |
| Big Jim Hatch Chile | pepper | Mar 19 | May 28 | Aug 6 – Aug 11 |
| Birds Eye Hot Peppers | pepper | Mar 26 | May 28 | Sep 5 – Sep 15 |
| Black Beauty Eggplant | vegetable | Mar 19 | May 28 | Aug 11 – Aug 26 |
| Cardoon (Purple Artichoke Thistle) | vegetable | Mar 19 | May 21 | Perennial — see plant page |
| Carolina Reaper peppers | pepper | Mar 12 | May 28 | Aug 26 – Sep 25 |
| Casper Eggplant | vegetable | Mar 26 | May 28 | Aug 11 |
| Catmint | herb | Mar 26 | May 14 | Perennial — see plant page |
| Cayenne Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 21 |
| Cherry Bomb peppers | pepper | Mar 12 | May 28 | Aug 11 – Aug 16 |
| Chinese 5-Color Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Chocolate Bell Sweet Peppers | pepper | Mar 26 | May 28 | Aug 1 – Aug 16 |
| Chocolate Habanero Hot Peppers | pepper | Mar 26 | May 28 | Aug 21 – Sep 10 |
| Corno di Toro Pepper | pepper | Mar 19 | May 28 | Aug 11 – Aug 16 |
| Crimson Forest Bunching Onions | allium | Mar 26 | May 14 | Jul 13 |
| Curly Parsley | herb | Mar 12 | May 14 | Jul 23 – Aug 2 |
| Datil peppers | pepper | Mar 12 | May 28 | Aug 26 – Sep 15 |
| Devils Tongue Yellow Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 15 |
| Emerald Giant Sweet Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| English Lavender | herb | Mar 26 | May 28 | Perennial — see plant page |
| English Thyme | herb | Mar 12 | May 14 | Perennial — see plant page |
| English White Daisy Flowers | flower | Mar 12 | May 14 | Perennial — see plant page |
| Evergreen Bunching Onions | allium | Mar 26 | May 14 | Jul 13 – Jul 18 |
| Firecracker Hot Peppers | pepper | Mar 26 | May 28 | Aug 16 – Sep 25 |
| Fish Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 16 |
| Flat-Leaf Parsley | herb | Mar 12 | May 14 | Jul 23 – Aug 12 |
| Florida Market Eggplant | vegetable | Mar 26 | May 28 | Aug 16 – Aug 26 |
| Fresno Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Giant Maximum Mix Snapdragon Flowers | flower | Mar 12 | May 14 | Aug 2 – Aug 17 |
| Gochugaru Korean Peppers | pepper | Mar 26 | May 28 | Aug 11 |
| Golden Celery | vegetable | Mar 5 | May 21 | Aug 14 – Aug 24 |
| Golden Marconi Sweet Peppers | pepper | Mar 26 | May 28 | Aug 1 – Aug 16 |
| Grano Red Onions | allium | Mar 12 | May 14 | Sep 11 |
| Grano White Onions | allium | Mar 12 | May 14 | Sep 11 |
| Green Globe Artichoke | vegetable | Mar 19 | May 28 | Perennial — see plant page |
| Hatch Green Chile (NM 6-4) Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 16 |
| Highbush Blueberries | berry | Mar 19 | May 28 | Perennial — see plant page |
| Holiday Marbles Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 15 |
| Hungarian Hot Wax Pepper | pepper | Mar 19 | May 28 | Aug 1 – Aug 11 |
| Imperial Star Artichoke | vegetable | Mar 12 | May 14 | Aug 12 – Aug 22 |
| Italian Oregano | herb | Mar 26 | May 14 | Perennial — see plant page |
| Jalapeño Peppers | pepper | Mar 26 | May 28 | Aug 1 – Aug 11 |
| Lemon Habanero Hot Peppers | pepper | Mar 26 | May 28 | Aug 21 – Sep 10 |
| Lemongrass | herb | Mar 26 | May 28 | Perennial — see plant page |
| Long Green Louisiana Eggplant | vegetable | Mar 26 | May 28 | Aug 1 – Aug 6 |
| Long Ping Tung Eggplant | vegetable | Mar 26 | May 28 | Jul 22 – Jul 27 |
| Long Purple Italian Eggplant | vegetable | Mar 26 | May 28 | Aug 11 |
| Mariachi Peppers | pepper | Mar 26 | May 28 | Aug 2 – Aug 11 |
| NuMex Twilight Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 25 |
| Orange Habanero Hot Peppers | pepper | Mar 26 | May 28 | Aug 21 – Sep 10 |
| Orange Horizon Sweet Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Ox-Eye Daisy Flowers | flower | Mar 12 | May 14 | Perennial — see plant page |
| Pandora Striped Eggplant | vegetable | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Pasilla de Oaxaca Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Pepperoncini Pepper | pepper | Mar 26 | May 28 | Aug 1 – Aug 11 |
| Pimento Sweet Peppers | pepper | Mar 26 | May 28 | Aug 21 – Aug 26 |
| Poblano Peppers | pepper | Mar 26 | May 28 | Aug 1 |
| Pretty Purple Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 25 |
| Purple Beauty Sweet Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 11 |
| Purple Tiger Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 5 |
| Red Burgundy Onions | allium | Mar 12 | May 14 | Sep 1 – Sep 11 |
| Red Caribbean Habanero Hot Peppers | pepper | Mar 26 | May 28 | Aug 21 – Sep 10 |
| Red Cayenne Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Red Cherry Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Red Mushroom Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Red Scotch Bonnet Pepper | pepper | Mar 19 | May 28 | Aug 31 – Sep 25 |
| Roman Chamomile | herb | Mar 26 | May 14 | Perennial — see plant page |
| Rosemary | herb | Mar 12 | May 28 | Perennial — see plant page |
| Round Mauve Eggplant | vegetable | Mar 26 | May 28 | Aug 16 – Aug 26 |
| Rue | herb | Mar 26 | May 14 | Perennial — see plant page |
| Santa Fe Grande Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Serrano Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 16 |
| Shasta Daisy Flowers | flower | Mar 12 | May 14 | Perennial — see plant page |
| Southport Red Globe Onions | allium | Mar 12 | May 14 | Sep 11 |
| Southport White Globe Onions | allium | Mar 12 | May 14 | Sep 11 |
| Spanish Sweet White Onions | allium | Mar 12 | May 14 | Sep 1 – Sep 11 |
| Sunbright Yellow Sweet Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 16 |
| Sweet Woodruff | herb | Mar 26 | May 14 | Perennial — see plant page |
| Tabasco Hot Peppers | pepper | Mar 26 | May 28 | Aug 16 – Aug 26 |
| Tall Utah 52-70 Celery | vegetable | Mar 12 | May 28 | Sep 5 – Sep 20 (before frost) |
| Tansy | herb | Mar 26 | May 14 | Perennial — see plant page |
| Tendercrisp Celery | vegetable | Mar 5 | May 21 | Aug 19 – Sep 3 |
| Thai Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Trinidad Moruga Scorpion peppers | pepper | Mar 12 | May 28 | Aug 16 – Sep 25 |
| Turkish Orange Eggplant | vegetable | Mar 26 | May 28 | Aug 21 – Aug 26 |
| White Cloud Sweet Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 11 |
| White Lisbon Bunching Onions | allium | Mar 26 | May 14 | Jul 13 |
| Wormwood | herb | Mar 26 | May 14 | Perennial — see plant page |
| Yellow Jalapeno (Caloro) Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Yellow Mushroom Hot Peppers | pepper | Mar 26 | May 28 | Aug 11 – Aug 21 |
| Yellow Scotch Bonnet Hot Peppers | pepper | Mar 26 | May 28 | Aug 26 – Sep 25 |
| Yolo Wonder Sweet Peppers | pepper | Mar 26 | May 28 | Aug 6 – Aug 16 |
Plant Outside in March
Nothing to plant or sow outside in March for Zone 4A.
Next window: April — 89 varieties, including AC Wendy Strawberry, Albion Strawberry, All Season Cabbage.
Harvest in March
Nothing to harvest in March for Zone 4A.
Next window: May — 7 varieties, including Astro Arugula, Black Oil Sunflower Microgreens, Chervil.
Key Tasks for March in Zone 4A
- 1 Start 122 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 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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