What to Plant in September
Tampa, FL · Zone 9b
Last frost: Feb 5
Frost-free days: 313
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
Start Indoors 23
Start these seeds indoors under grow lights or on a sunny windowsill.
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
Pumpkin
Jan 1 – Dec 31
¼ per sq ft
85–120 days
Squash
Jan 1 – Dec 31
1 per sq ft
45–65 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
Tomato
Jan 1 – Dec 31
1 per sq ft
65–80 days
Growing guide
Zucchini
Jan 1 – Dec 31
1 per sq ft
45–60 days
Parsley
Jun 16 – Dec 31
4 per sq ft
70–90 days
Kale
Jul 9 – Dec 31
1 per sq ft
50–65 days
Celery
Jul 24 – Dec 31
4 per sq ft
80–120 days
Swiss Chard
Jul 24 – Dec 31
4 per sq ft
50–60 days
Broccoli
Aug 24 – Dec 31
1 per sq ft
60–100 days
Cabbage
Aug 24 – Dec 31
1 per sq ft
70–100 days
Cauliflower
Aug 24 – Dec 31
1 per sq ft
55–100 days
Transplant 21
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
Pumpkin
Jan 1 – Dec 31
¼ per sq ft
85–120 days
Squash
Jan 1 – Dec 31
1 per sq ft
45–65 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
Tomato
Jan 1 – Dec 31
1 per sq ft
65–80 days
Growing guide
Zucchini
Jan 1 – Dec 31
1 per sq ft
45–60 days
Cucumber
Feb 1 – Sep 15
2 per sq ft
50–70 days
Growing guide
Basil
Apr 16 – Sep 8
4 per sq ft
25–35 days
Parsley
Aug 24 – Dec 31
4 per sq ft
70–90 days
Kale
Aug 24 – Dec 31
1 per sq ft
50–65 days
Swiss Chard
Aug 24 – Dec 31
4 per sq ft
50–60 days
Direct Sow 9
Plant these seeds directly into the soil outdoors.
Dill
Jan 1 – Dec 31
4 per sq ft
40–60 days
Beans (Bush)
Jan 1 – Dec 31
9 per sq ft
50–60 days
Carrot
Jan 1 – Dec 31
16 per sq ft
70–80 days
Corn
Jan 1 – Dec 31
1 per sq ft
60–100 days
Garlic
Jan 1 – Dec 31
9 per sq ft
180–240 days
Potato
Jan 1 – Dec 31
1 per sq ft
70–150 days
Sweet Potato
Jan 1 – Dec 31
1 per sq ft
90–120 days
Beet
Aug 24 – Dec 31
9 per sq ft
50–70 days
Turnip
Aug 24 – Dec 31
9 per sq ft
30–60 days
September Gardening Tips
- Start Tomato, Squash, Zucchini indoors now to give them a head start before transplanting outside.
- Tomato, Cucumber, Squash can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
- Direct sow Corn, Beans (Bush), Carrot straight into the garden — no transplanting needed.
- Protect tender crops from early frost with row cover — this can extend your season by several weeks.
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