What to Plant in March
Fargo, ND · Zone 4a
Last frost: May 15
Frost-free days: 133
Spring is still weeks away outdoors, but indoor seed starting is in full swing. Start tomatoes, peppers, and herbs under lights. Prepare beds for cool-season crops that go out next month.
March at a Glance
Indoor
Transplant
Direct Sow
1
5
10
15
20
25
Chives
Mint
Oregano
Parsley
Sage
Thyme
Artichoke
Broccoli
Cabbage
Cauliflower
Celery
Kale
Leek
Lettuce
Onion
Spinach
Strawberry
Swiss Chard
Start Indoors 19
Start these seeds indoors under grow lights or on a sunny windowsill.
Plant now
Leek
Jan 24 – Mar 16
4 per sq ft
90–150 days
Onion
Jan 24 – Mar 16
9 per sq ft
100–120 days
Chives
Feb 8 – Apr 15
9 per sq ft
60–90 days
Parsley
Feb 8 – May 8
4 per sq ft
70–90 days
Celery
Feb 8 – Mar 23
4 per sq ft
80–120 days
Mint
Feb 15 – Apr 15
4 per sq ft
60–90 days
Thyme
Feb 22 – Mar 31
4 per sq ft
70–90 days
Artichoke
Feb 22 – Apr 8
1 per sq ft
85–100 days
Broccoli
Feb 22 – May 31
1 per sq ft
60–100 days
Cabbage
Feb 22 – May 23
1 per sq ft
70–100 days
Cauliflower
Feb 22 – May 31
1 per sq ft
55–100 days
Kale
Mar 1 – Jun 23
1 per sq ft
50–65 days
Strawberry
Mar 1 – Apr 30
4 per sq ft
60–90 days
Oregano
Mar 9 – Apr 23
1 per sq ft
60–90 days
Sage
Mar 9 – Apr 8
1 per sq ft
75–90 days
Later this month
Lettuce
Mar 17 – May 31
4 per sq ft
45–60 days
Spinach
Mar 17 – Apr 30
9 per sq ft
35–50 days
Swiss Chard
Mar 17 – Jul 16
4 per sq ft
50–60 days
Tomato
Mar 24 – Apr 8
1 per sq ft
65–80 days
Growing guide
March Gardening Tips
- Start Tomato, Lettuce, Broccoli indoors now to give them a head start before transplanting outside.
- Add compost to beds now so nutrients are available when planting time arrives.
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