Zone 6B — March
What to Plant in March in Zone 6B
March in Zone 6B:
39 crops to start indoors,
23 to plant or direct sow outside, and
3 entering harvest window.
Last frost averages April 15. Reference city: Richmond, VA.
39 Start Indoors
23 Plant Outside
3 Harvest
Start Indoors in March
| Plant | Type | Start Indoors | Transplant Outside | Harvest Window |
|---|---|---|---|---|
| Tatsoi | lettuce | Mar 4 | Mar 18 | Apr 12 – May 2 |
| Alexandria Alpine Strawberry | berry | Mar 11 | Apr 22 | Jul 31 – Aug 20 |
| Anaheim Peppers | pepper | Mar 25 | Apr 29 | Jul 15 – Jul 23 |
| Bhut Jolokia Ghost Pepper | pepper | Mar 25 | Apr 29 | Jul 28 – Aug 27 |
| Big Jim Hatch Chile | pepper | Mar 25 | Apr 29 | Jul 8 – Jul 13 |
| Black Beauty Zucchini | squash | Mar 29 | Apr 26 | Jun 10 – Jun 20 |
| Brilliant Celeriac | root_vegetable | Mar 4 | Apr 15 | Aug 3 – Aug 13 |
| Broccolini | brassica | Mar 25 | Apr 29 | Jun 18 – Jul 8 |
| Brussels Sprouts | brassica | Mar 25 | Apr 29 | Jul 23 – Aug 17 |
| Caribbean Red Scotch Bonnet Pepper | pepper | Mar 25 | Apr 29 | Aug 2 – Aug 27 |
| Carolina Reaper peppers | pepper | Mar 18 | Apr 29 | Jul 28 – Aug 27 |
| Cayenne Peppers | pepper | Mar 25 | Apr 29 | Jul 23 – Aug 2 |
| Cherry Bomb peppers | pepper | Mar 18 | Apr 29 | Jul 13 – Jul 18 |
| Corno di Toro Pepper | pepper | Mar 25 | Apr 29 | Jul 13 – Jul 18 |
| Curly Parsley | herb | Mar 11 | Apr 15 | Jun 24 – Jul 4 |
| Daikon Radishes | root_vegetable | Mar 25 | Apr 1 | May 16 – May 26 |
| Datil peppers | pepper | Mar 18 | Apr 29 | Jul 28 – Aug 17 |
| Flat-Leaf Parsley | herb | Mar 11 | Apr 15 | Jun 24 – Jul 14 |
| Fresno Peppers | pepper | Mar 25 | Apr 29 | Jul 13 – Jul 18 |
| Green Cabbage | brassica | Mar 25 | Apr 29 | Jun 28 – Aug 7 |
| Hungarian Hot Wax Pepper | pepper | Mar 25 | Apr 29 | Jul 3 – Jul 13 |
| Imperial Star Artichoke | vegetable | Mar 11 | Apr 15 | Jul 14 – Jul 24 |
| Isis Candy cherry tomatoes | tomato | Mar 25 | Apr 22 | Jul 11 – Jul 21 |
| Jalapeño Peppers | pepper | Mar 25 | Apr 29 | Jul 3 – Jul 13 |
| Kellogg's Breakfast tomatoes | tomato | Mar 25 | Apr 22 | Jul 6 – Jul 16 |
| Matt's Wild Cherry tomatoes | tomato | Mar 25 | Apr 22 | Jun 16 – Jul 11 |
| Mrs. Burns Lemon Basil | herb | Mar 25 | Apr 22 | Jun 21 – Jul 1 |
| Paul Robeson tomatoes | tomato | Mar 25 | Apr 22 | Jul 1 – Jul 16 |
| Pinkeye Purple Hull Pea | legume | Mar 4 | Apr 29 | Jun 23 – Jul 6 |
| Poblano Peppers | pepper | Mar 25 | Apr 29 | Jul 3 – Jul 13 |
| Red Cabbage | brassica | Mar 25 | Apr 29 | Jul 8 – Aug 17 |
| Romanesco | brassica | Mar 25 | Apr 29 | Jul 13 – Aug 7 |
| Serrano Peppers | pepper | Mar 25 | Apr 29 | Jul 8 – Jul 18 |
| Snow Crown Cauliflower | brassica | Mar 25 | Apr 29 | Jun 18 – Jun 28 |
| Sweet Marjoram | herb | Mar 25 | Apr 22 | Jul 6 – Jul 21 |
| Thai Hot Peppers | pepper | Mar 25 | Apr 29 | Jul 13 – Jul 23 |
| Trinidad Moruga Scorpion peppers | pepper | Mar 18 | Apr 29 | Jul 18 – Aug 27 |
| Waltham 29 Broccoli | brassica | Mar 25 | Apr 29 | Jul 13 – Jul 28 |
| Habanero Pepper | pepper | Mar 25 | May 6 | Aug 4 – Sep 3 |
Plant Outside in March
| Plant | Type | Action | Target Date | Harvest Window |
|---|---|---|---|---|
| Astro Arugula | lettuce | Direct Sow | Mar 21 | Apr 11 – Apr 30 |
| Bloomsdale Longstanding Spinach | lettuce | Direct Sow | Mar 21 | May 5 – May 12 |
| Bok Choy | lettuce | Direct Sow | Mar 21 | May 5 – May 20 |
| Butterhead Lettuce | lettuce | Direct Sow | Mar 21 | May 10 – May 25 |
| Chinese Broccoli (Gai Lan) | brassica | Direct Sow | Mar 21 | Apr 20 – May 10 |
| Curly Kale | lettuce | Direct Sow | Mar 21 | May 15 – May 25 |
| Endive / Escarole | lettuce | Direct Sow | Mar 21 | May 5 – May 25 |
| Georgia Southern Collard Greens | lettuce | Direct Sow | Mar 21 | May 20 – Jun 9 |
| Lacinato Kale | lettuce | Direct Sow | Mar 21 | May 20 – May 25 |
| Leaf Lettuce Mix | lettuce | Direct Sow | Mar 21 | May 5 – May 15 |
| Mesclun Mix | lettuce | Direct Sow | Mar 21 | Apr 11 – Apr 20 |
| Mizuna | lettuce | Direct Sow | Mar 21 | Apr 30 – May 10 |
| Mustard Greens | lettuce | Direct Sow | Mar 21 | Apr 25 – May 10 |
| Mâche (Corn Salad) | lettuce | Direct Sow | Mar 21 | May 20 – Jun 13 |
| Napa Cabbage | brassica | Direct Sow | Mar 21 | May 30 – Jun 19 |
| Radicchio | lettuce | Direct Sow | Mar 21 | May 20 – Jun 14 |
| Red Leaf Lettuce | lettuce | Direct Sow | Mar 21 | May 5 – May 15 |
| Red Russian Kale | lettuce | Direct Sow | Mar 21 | May 10 – May 20 |
| Romaine Lettuce | lettuce | Direct Sow | Mar 21 | May 25 – Jun 4 |
| Swiss Chard | lettuce | Direct Sow | Mar 21 | May 10 – May 20 |
| Tatsoi | lettuce | Transplant | Mar 18 | Apr 12 – May 2 |
| Texas 1015Y SuperSweet Onion | root_vegetable | Transplant | Mar 18 | Jul 1 – Jul 11 |
| Winner Kohlrabi | brassica | Direct Sow | Mar 21 | May 5 – May 10 |
Harvest in March
| Plant | Type | Planted / Sown | Harvest Window |
|---|---|---|---|
| Berry Blue honeyberry shrubs | fruit | Apr 1 | Mar 31 |
| Issai hardy kiwi vines | fruit | Apr 1 | Mar 31 |
| Red Lake currant shrubs | fruit | Apr 1 | Mar 31 |
Key Tasks for March in Zone 6B
- 1 Start 39 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 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 Direct sow seeds at the recommended depth and spacing. Keep the seedbed consistently moist until germination is complete.
- 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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