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Zone 6A — March

What to Plant in March in Zone 6A

March in Zone 6A: 30 crops to start indoors, 2 to plant or direct sow outside, and 0 entering harvest window. Last frost averages April 18. Reference city: Columbus, OH.
30 Start Indoors
2 Plant Outside
0 Harvest

Start Indoors in March

Plant Type Start Indoors Transplant Outside Harvest Window
Tatsoi tatsoi Mar 7 Mar 21 Apr 15 – May 5
Alexandria Alpine Strawberry strawberry Mar 14 Apr 25 Aug 3 – Aug 23
Brilliant Celeriac celeriac Mar 7 Apr 18 Aug 6 – Aug 16
Curly Parsley herb Mar 14 Apr 18 Jun 27 – Jul 7
Daikon Radishes daikon radish Mar 28 Apr 4 May 19 – May 29
Flat-Leaf Parsley herb Mar 14 Apr 18 Jun 27 – Jul 17
Imperial Star Artichoke artichoke Mar 14 Apr 18 Jul 17 – Jul 27
Mrs. Burns Lemon Basil basil Mar 28 Apr 25 Jun 24 – Jul 4
Sweet Marjoram marjoram Mar 28 Apr 25 Jul 9 – Jul 24
Anaheim Peppers pepper Mar 28 May 2 Jul 18 – Jul 26
Bhut Jolokia Ghost Pepper pepper Mar 28 May 2 Jul 31 – Aug 30
Big Jim Hatch Chile pepper Mar 28 May 2 Jul 11 – Jul 16
Broccolini vegetable Mar 28 May 2 Jun 21 – Jul 11
Brussels Sprouts vegetable Mar 28 May 2 Jul 26 – Aug 20
Caribbean Red Scotch Bonnet Pepper pepper Mar 28 May 2 Aug 5 – Aug 30
Cayenne Peppers pepper Mar 28 May 2 Jul 26 – Aug 5
Corno di Toro Pepper pepper Mar 28 May 2 Jul 16 – Jul 21
Fresno Peppers pepper Mar 28 May 2 Jul 16 – Jul 21
Green Cabbage vegetable Mar 28 May 2 Jul 1 – Aug 10
Habanero Pepper pepper Mar 28 May 9 Aug 7 – Sep 6
Hungarian Hot Wax Pepper pepper Mar 28 May 2 Jul 6 – Jul 16
Jalapeño Peppers pepper Mar 28 May 2 Jul 6 – Jul 16
Pinkeye Purple Hull Pea cowpea Mar 7 May 2 Jun 26 – Jul 9
Poblano Peppers pepper Mar 28 May 2 Jul 6 – Jul 16
Red Cabbage vegetable Mar 28 May 2 Jul 11 – Aug 20
Romanesco vegetable Mar 28 May 2 Jul 16 – Aug 10
Serrano Peppers pepper Mar 28 May 2 Jul 11 – Jul 21
Snow Crown Cauliflower vegetable Mar 28 May 2 Jun 21 – Jul 1
Thai Hot Peppers pepper Mar 28 May 2 Jul 16 – Jul 26
Waltham 29 Broccoli vegetable Mar 28 May 2 Jul 16 – Jul 31

Plant Outside in March

Plant Type Action Target Date Harvest Window
Tatsoi tatsoi Transplant Mar 21 Apr 15 – May 5
Texas 1015Y SuperSweet Onion root Transplant Mar 21 Jul 4 – Jul 14

Harvest in March

No crops entering harvest in March for Zone 6A.

Key Tasks for March in Zone 6A

  1. 1 Start 30 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 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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