What should I plant in August in Houston, TX?

In August in Houston, TX (zone 9a), you can plant Basil, Chives, Dill, Lavender, Mint, and more. These dates are based on local climate data for your area.

When do I plant Basil in Houston, TX?

In Houston, TX (zone 9a), Basil: start seeds indoors Mar 17 – Jul 16, transplant outdoors May 1 – Aug 31.

When do I plant Chives in Houston, TX?

In Houston, TX (zone 9a), Chives: start seeds indoors Jan 1 – Dec 31, transplant outdoors Jan 1 – Dec 31.

When do I plant Dill in Houston, TX?

In Houston, TX (zone 9a), Dill: direct sow Feb 15 – Jul 16 and Aug 24 – Oct 8.

What to Plant in August

Houston, TX · Zone 9a

Last frost: Feb 10 Frost-free days: 303

Full year calendar for Houston

Late summer is prime time for starting your fall garden. Sow cool-season crops indoors or direct sow fast-maturing varieties. The heat will ease soon.

August at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Basil

Chives

Dill

Lavender

Mint

Oregano

Parsley

Rosemary

Sage

Thyme

Artichoke

Beans (Bush)

Broccoli

Brussels Sprouts

Cabbage

Carrot

Cauliflower

Celery

Garlic

Kale

Leek

Okra

Onion

Potato

Squash

Strawberry

Sunflower

Swiss Chard

Zucchini

Start Indoors 20

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

Plant now

Chives

Jan 1 – Dec 31

9 per sq ft 60–90 days

Lavender

Jan 1 – Dec 31

1 per sq ft 90–120 days

Mint

Jan 1 – Dec 31

4 per sq ft 60–90 days

Oregano

Jan 1 – Dec 31

1 per sq ft 60–90 days

Rosemary

Jan 1 – Dec 31

1 per sq ft 80–120 days

Sage

Jan 1 – Dec 31

1 per sq ft 75–90 days

Thyme

Jan 1 – Dec 31

4 per sq ft 70–90 days

Artichoke

Jan 1 – Dec 31

1 per sq ft 85–100 days

Leek

Jan 1 – Dec 31

4 per sq ft 90–150 days

Onion

Jan 1 – Dec 31

9 per sq ft 100–120 days

Strawberry

Jan 1 – Dec 31

4 per sq ft 60–90 days

Sunflower

Jan 1 – Dec 31

1 per sq ft 70–100 days

Brussels Sprouts

Jun 1 – Dec 31

1 per sq ft 80–110 days

Parsley

Jun 24 – Dec 31

4 per sq ft 70–90 days

Celery

Jul 17 – Dec 31

4 per sq ft 80–120 days

Kale

Jul 17 – Dec 31

1 per sq ft 50–65 days

Swiss Chard

Aug 1 – Dec 31

4 per sq ft 50–60 days

Later this month

Broccoli

Aug 17 – Dec 31

1 per sq ft 60–100 days

Cabbage

Aug 17 – Dec 31

1 per sq ft 70–100 days

Cauliflower

Aug 17 – Dec 31

1 per sq ft 55–100 days

Transplant 16

Move these seedlings from indoors to your garden beds.

Chives

Jan 1 – Dec 31

9 per sq ft 60–90 days

Lavender

Jan 1 – Dec 31

1 per sq ft 90–120 days

Mint

Jan 1 – Dec 31

4 per sq ft 60–90 days

Oregano

Jan 1 – Dec 31

1 per sq ft 60–90 days

Rosemary

Jan 1 – Dec 31

1 per sq ft 80–120 days

Sage

Jan 1 – Dec 31

1 per sq ft 75–90 days

Thyme

Jan 1 – Dec 31

4 per sq ft 70–90 days

Artichoke

Jan 1 – Dec 31

1 per sq ft 85–100 days

Leek

Jan 1 – Dec 31

4 per sq ft 90–150 days

Onion

Jan 1 – Dec 31

9 per sq ft 100–120 days

Strawberry

Jan 1 – Dec 31

4 per sq ft 60–90 days

Sunflower

Jan 1 – Dec 31

1 per sq ft 70–100 days

Squash

Feb 15 – Aug 23

1 per sq ft 45–65 days

Zucchini

Feb 15 – Aug 23

1 per sq ft 45–60 days

Okra

Mar 17 – Aug 8

1 per sq ft 50–65 days

Basil

May 1 – Aug 31

4 per sq ft 25–35 days

Direct Sow 5

Plant these seeds directly into the soil outdoors.

Plant now

Garlic

Jan 1 – Dec 31

9 per sq ft 180–240 days

Beans (Bush)

Feb 15 – Aug 16

9 per sq ft 50–60 days

Later this month

Dill

Aug 24 – Oct 8

4 per sq ft 40–60 days

Carrot

Aug 24 – Dec 31

16 per sq ft 70–80 days

Potato

Aug 24 – Dec 31

1 per sq ft 70–150 days

August Gardening Tips

Start Broccoli, Cabbage, Kale indoors now to give them a head start before transplanting outside.
Squash, Zucchini, Strawberry can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
Direct sow Beans (Bush), Carrot, Potato straight into the garden — no transplanting needed.
Count backwards from your first frost date to determine the last safe date for starting fall crops.