What should I plant in December in Oklahoma City, OK?

In December in Oklahoma City, OK (zone 7a), you can plant Chives, Lavender, Mint, Parsley, Rosemary, and more. These dates are based on local climate data for your area.

When do I plant Chives in Oklahoma City, OK?

In Oklahoma City, OK (zone 7a), Chives: start seeds indoors Jan 1 – May 8 and Dec 9 – Dec 31, transplant outdoors Feb 15 – Jul 16.

When do I plant Lavender in Oklahoma City, OK?

In Oklahoma City, OK (zone 7a), Lavender: start seeds indoors Jan 1 – Mar 16 and Dec 17 – Dec 31, transplant outdoors Mar 1 – May 31.

When do I plant Mint in Oklahoma City, OK?

In Oklahoma City, OK (zone 7a), Mint: start seeds indoors Jan 1 – May 16 and Dec 17 – Dec 31, transplant outdoors Feb 15 – Jul 16.

What to Plant in December

Oklahoma City, OK · Zone 7a

Last frost: Mar 28 Frost-free days: 222

Full year calendar for Oklahoma City

The garden rests under snow or mulch. This is planning season — review what worked, order seeds, and sketch out next year's bed layouts.

December at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Chives

Lavender

Mint

Parsley

Rosemary

Thyme

Artichoke

Broccoli

Brussels Sprouts

Cabbage

Cauliflower

Celery

Leek

Onion

Start Indoors 14

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

Plant now

Brussels Sprouts

Oct 9 – Dec 31

1 per sq ft 80–110 days

Leek

Nov 24 – Dec 31

4 per sq ft 90–150 days

Onion

Nov 24 – Dec 31

9 per sq ft 100–120 days

Chives

Dec 9–31

9 per sq ft 60–90 days

Parsley

Dec 9–31

4 per sq ft 70–90 days

Celery

Dec 9–31

4 per sq ft 80–120 days

Later this month

Lavender

Dec 17–31

1 per sq ft 90–120 days

Mint

Dec 17–31

4 per sq ft 60–90 days

Rosemary

Dec 17–31

1 per sq ft 80–120 days

Thyme

Dec 24–31

4 per sq ft 70–90 days

Artichoke

Dec 24–31

1 per sq ft 85–100 days

Broccoli

Dec 24–31

1 per sq ft 60–100 days

Cabbage

Dec 24–31

1 per sq ft 70–100 days

Cauliflower

Dec 24–31

1 per sq ft 55–100 days

December Gardening Tips

Start Broccoli, Cabbage, Celery indoors now to give them a head start before transplanting outside.
Get a soil test now — results come back fast in the off-season and you can amend before spring.