What should I plant in September in San Antonio, TX?

In September in San Antonio, TX (zone 8b), you can plant Basil, Chives, Lavender, Mint, Oregano, and more. These dates are based on local climate data for your area.

When do I plant Basil in San Antonio, TX?

In San Antonio, TX (zone 8b), Basil: start seeds indoors Mar 9 – Jul 23, transplant outdoors Apr 24 – Sep 8.

When do I plant Chives in San Antonio, TX?

In San Antonio, TX (zone 8b), Chives: start seeds indoors Jan 1 – Dec 31, transplant outdoors Jan 1 – Dec 31.

When do I plant Lavender in San Antonio, TX?

In San Antonio, TX (zone 8b), Lavender: start seeds indoors Jan 1 – Dec 31, transplant outdoors Jan 1 – Dec 31.

What to Plant in September

San Antonio, TX · Zone 8b

Last frost: Mar 1 Frost-free days: 269

Full year calendar for San Antonio

The fall growing season is in full swing. Transplant brassicas and direct sow greens, root vegetables, and herbs that thrive in cooler temperatures.

September at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Basil

Chives

Lavender

Mint

Oregano

Parsley

Rosemary

Sage

Thyme

Artichoke

Beet

Broccoli

Cabbage

Carrot

Cauliflower

Celery

Garlic

Kale

Leek

Lettuce

Onion

Potato

Strawberry

Sunflower

Swiss Chard

Turnip

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

Parsley

Jul 17 – Dec 31

4 per sq ft 70–90 days

Celery

Jul 17 – Dec 31

4 per sq ft 80–120 days

Kale

Aug 9 – Dec 31

1 per sq ft 50–65 days

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

Swiss Chard

Aug 24 – Dec 31

4 per sq ft 50–60 days

Later this month

Lettuce

Sep 24 – Dec 31

4 per sq ft 45–60 days

Transplant 16

Move these seedlings from indoors to your garden beds.

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

Basil

Apr 24 – Sep 8

4 per sq ft 25–35 days

Later this month

Parsley

Sep 24 – Dec 31

4 per sq ft 70–90 days

Kale

Sep 24 – Dec 31

1 per sq ft 50–65 days

Swiss Chard

Sep 24 – Dec 31

4 per sq ft 50–60 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

Later this month

Beet

Sep 24 – Dec 31

9 per sq ft 50–70 days

Carrot

Sep 24 – Dec 31

16 per sq ft 70–80 days

Potato

Sep 24 – Dec 31

1 per sq ft 70–150 days

Turnip

Sep 24 – Dec 31

9 per sq ft 30–60 days

September Gardening Tips

Start Lettuce, Broccoli, Cabbage indoors now to give them a head start before transplanting outside.
Kale, Strawberry, Sunflower can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
Direct sow Carrot, Potato, Garlic straight into the garden — no transplanting needed.
Protect tender crops from early frost with row cover — this can extend your season by several weeks.