What to Plant in January
Pittsburgh, PA · Zone 6b
Last frost: Apr 15
Frost-free days: 188
The garden is dormant outdoors, but it's time to start planning and get seed orders in. Some long-season crops like peppers and onions can be started indoors this month.
January at a Glance
Indoor
Transplant
Direct Sow
1
5
10
15
20
25
Chives
Lavender
Mint
Parsley
Rosemary
Broccoli
Brussels Sprouts
Cabbage
Cauliflower
Celery
Garlic
Leek
Onion
Start Indoors 12
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 1 – Apr 8
4 per sq ft
90–150 days
Onion
Jan 1 – Apr 15
9 per sq ft
100–120 days
Chives
Jan 9 – Apr 30
9 per sq ft
60–90 days
Parsley
Jan 9 – May 31
4 per sq ft
70–90 days
Later this month
Mint
Jan 17 – May 8
4 per sq ft
60–90 days
Celery
Jan 17 – Apr 15
4 per sq ft
80–120 days
Lavender
Jan 24 – Mar 8
1 per sq ft
90–120 days
Rosemary
Jan 24 – Mar 16
1 per sq ft
80–120 days
Broccoli
Jan 24 – Jun 23
1 per sq ft
60–100 days
Cabbage
Jan 24 – Jun 15
1 per sq ft
70–100 days
Cauliflower
Jan 24 – Jun 23
1 per sq ft
55–100 days
Direct Sow 1
Plant these seeds directly into the soil outdoors.
Garlic
Jan 1 – Aug 16
9 per sq ft
180–240 days
January Gardening Tips
- Start Broccoli, Cabbage, Celery indoors now to give them a head start before transplanting outside.
- Direct sow Garlic straight into the garden — no transplanting needed.
- Check seed starting supplies — grow lights, heat mats, and fresh seed-starting mix. Order seeds early for the best selection.
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