What should I plant in January in zone 5b?

In January in zone 5b, you can plant Onions (seed), Celery, Leeks, and more. Check indoor start, transplant, and direct sow dates for your specific zone.

When do I plant Onions (seed) in zone 5b?

In zone 5b, Onions (seed): start seeds indoors Jan 15--Feb 1, transplant outdoors Apr 1--15.

When do I plant Celery in zone 5b?

In zone 5b, Celery: start seeds indoors Jan 15--Feb 1, transplant outdoors May 5--15.

When do I plant Leeks in zone 5b?

In zone 5b, Leeks: start seeds indoors Jan 15--Feb 1, transplant outdoors Apr 15--May 1.

What to Plant in January

USDA Zone 5b

Last frost: Apr 15 – May 1 Frost-free days: 150–170

Zone:

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

Onions (seed)

Celery

Leeks

Start Indoors 3

Start these seeds indoors under grow lights or on a sunny windowsill.

Onions (seed)

Jan 15 – Feb 1

9 per sq ft 100–120 days

Celery

Jan 15 – Feb 1

4 per sq ft 80–120 days

Leeks

Jan 15 – Feb 1

4 per sq ft 90–150 days

January Gardening Tips

Start Celery, Onions (seed), Leeks indoors now to give them a head start before transplanting outside.
Check seed starting supplies — grow lights, heat mats, and fresh seed-starting mix. Order seeds early for the best selection.

Related Guides

Spacing Chart

How many plants per square foot

4×8 Raised Bed Layout

Planting plans for a standard bed

Planting Calendar

When to plant for your zone

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