What to Plant in March
Buffalo, NY · Zone 6a
Last frost: May 5
Frost-free days: 163
Spring is building momentum. Start tomatoes and peppers indoors if you haven't already. Cool-season crops like peas, spinach, and lettuce can go outdoors once the soil is workable.
Start Indoors 22
Start these seeds indoors under grow lights or on a sunny windowsill.
Plant now
Brussels Sprouts
Jan 1 – Mar 16
1 per sq ft
80–110 days
Leek
Jan 9 – Apr 8
4 per sq ft
90–150 days
Onion
Jan 9 – Apr 15
9 per sq ft
100–120 days
Chives
Jan 24 – Apr 30
9 per sq ft
60–90 days
Parsley
Jan 24 – May 31
4 per sq ft
70–90 days
Mint
Feb 1 – May 8
4 per sq ft
60–90 days
Celery
Feb 1 – Apr 15
4 per sq ft
80–120 days
Rosemary
Feb 8 – Mar 16
1 per sq ft
80–120 days
Thyme
Feb 15 – Apr 15
4 per sq ft
70–90 days
Artichoke
Feb 15 – May 8
1 per sq ft
85–100 days
Broccoli
Feb 15 – Jun 23
1 per sq ft
60–100 days
Cabbage
Feb 15 – Jun 15
1 per sq ft
70–100 days
Cauliflower
Feb 15 – Jun 23
1 per sq ft
55–100 days
Strawberry
Feb 15 – May 23
4 per sq ft
60–90 days
Kale
Feb 22 – Jul 23
1 per sq ft
50–65 days
Oregano
Mar 1 – May 16
1 per sq ft
60–90 days
Sage
Mar 1 – Apr 30
1 per sq ft
75–90 days
Lettuce
Mar 1 – Jun 8
4 per sq ft
45–60 days
Spinach
Mar 1 – May 16
9 per sq ft
35–50 days
Swiss Chard
Mar 1 – Aug 8
4 per sq ft
50–60 days
Later this month
Direct Sow 2
Plant these seeds directly into the soil outdoors.
Plant now
Garlic
Jan 1 – Jul 31
9 per sq ft
180–240 days
Later this month
Radish
Mar 24 – Jul 8
16 per sq ft
22–30 days
March Gardening Tips
- Start Tomato, Pepper, Lettuce indoors now to give them a head start before transplanting outside.
- Direct sow Garlic, Radish straight into the garden — no transplanting needed.
- Add compost to beds now so nutrients are available when planting time arrives.
Nearby Cities
Ready to plan your garden?
Add these crops to your garden plan and get personalized planting reminders for Zone 6a.
Start Planning Free