What to Plant in March
Tucson, AZ · Zone 9a
Last frost: Feb 15
Frost-free days: 289
Your last frost is behind you or nearly so. Warm-season crops can go in the ground soon. Direct sow beans, squash, and cucumbers as the soil warms up.
March at a Glance
Indoor
Transplant
Direct Sow
1
5
10
15
20
25
Basil
Chives
Cilantro
Dill
Lavender
Mint
Oregano
Parsley
Rosemary
Sage
Thyme
Artichoke
Beet
Broccoli
Brussels Sprouts
Cabbage
Carrot
Cauliflower
Celery
Eggplant
Garlic
Kale
Leek
Lettuce
Melon
Okra
Onion
Peas
Potato
Pumpkin
Radish
Spinach
Squash
Strawberry
Sunflower
Swiss Chard
Turnip
Watermelon
Zucchini
Start Indoors 30
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 – Apr 8
1 per sq ft
90–120 days
Mint
Jan 1 – Dec 31
4 per sq ft
60–90 days
Oregano
Jan 1 – Jun 8
1 per sq ft
60–90 days
Parsley
Jan 1 – Mar 23
4 per sq ft
70–90 days
Rosemary
Jan 1 – Apr 15
1 per sq ft
80–120 days
Sage
Jan 1 – May 23
1 per sq ft
75–90 days
Thyme
Jan 1 – May 16
4 per sq ft
70–90 days
Artichoke
Jan 1 – Jun 23
1 per sq ft
85–100 days
Broccoli
Jan 1 – Mar 16
1 per sq ft
60–100 days
Cabbage
Jan 1 – Mar 16
1 per sq ft
70–100 days
Cauliflower
Jan 1 – Mar 16
1 per sq ft
55–100 days
Kale
Jan 1 – Apr 15
1 per sq ft
50–65 days
Leek
Jan 1 – Dec 31
4 per sq ft
90–150 days
Lettuce
Jan 1 – Mar 23
4 per sq ft
45–60 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
Swiss Chard
Jan 1 – Apr 30
4 per sq ft
50–60 days
Tomato
Jan 24 – May 16
1 per sq ft
65–80 days
Growing guide
Eggplant
Feb 1 – Apr 15
1 per sq ft
70–90 days
Pepper
Feb 1 – Apr 23
1 per sq ft
60–100 days
Growing guide
Sunflower
Feb 8 – Jun 8
1 per sq ft
70–100 days
Pumpkin
Feb 22 – May 16
¼ per sq ft
85–120 days
Squash
Feb 22 – Jul 16
1 per sq ft
45–65 days
Zucchini
Feb 22 – Jul 16
1 per sq ft
45–60 days
Basil
Mar 1 – Jul 31
4 per sq ft
25–35 days
Later this month
Cucumber
Mar 17 – Jun 30
2 per sq ft
50–70 days
Growing guide
Melon
Mar 17 – May 23
½ per sq ft
70–90 days
Okra
Mar 17 – Jun 15
1 per sq ft
50–65 days
Watermelon
Mar 24 – May 23
¼ per sq ft
70–90 days
Transplant 26
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 – Jun 23
1 per sq ft
90–120 days
Mint
Jan 1 – Dec 31
4 per sq ft
60–90 days
Oregano
Jan 1 – Jul 31
1 per sq ft
60–90 days
Parsley
Jan 1 – May 31
4 per sq ft
70–90 days
Rosemary
Jan 1 – Jun 30
1 per sq ft
80–120 days
Sage
Jan 1 – Jul 16
1 per sq ft
75–90 days
Thyme
Jan 1 – Jul 23
4 per sq ft
70–90 days
Artichoke
Jan 1 – Aug 31
1 per sq ft
85–100 days
Broccoli
Jan 1 – May 8
1 per sq ft
60–100 days
Brussels Sprouts
Jan 1 – May 8
1 per sq ft
80–110 days
Cabbage
Jan 1 – May 8
1 per sq ft
70–100 days
Cauliflower
Jan 1 – May 8
1 per sq ft
55–100 days
Celery
Jan 1 – May 8
4 per sq ft
80–120 days
Kale
Jan 1 – May 31
1 per sq ft
50–65 days
Leek
Jan 1 – Dec 31
4 per sq ft
90–150 days
Lettuce
Jan 1 – Apr 23
4 per sq ft
45–60 days
Onion
Jan 1 – Dec 31
9 per sq ft
100–120 days
Spinach
Jan 1 – Mar 31
9 per sq ft
35–50 days
Strawberry
Jan 1 – Dec 31
4 per sq ft
60–90 days
Swiss Chard
Jan 1 – May 31
4 per sq ft
50–60 days
Sunflower
Mar 1 – Jun 30
1 per sq ft
70–100 days
Later this month
Pumpkin
Mar 17 – Jun 8
¼ per sq ft
85–120 days
Squash
Mar 17 – Aug 8
1 per sq ft
45–65 days
Tomato
Mar 17 – Jul 8
1 per sq ft
65–80 days
Growing guide
Zucchini
Mar 17 – Aug 8
1 per sq ft
45–60 days
Direct Sow 9
Plant these seeds directly into the soil outdoors.
Cilantro
Jan 1 – Apr 23
9 per sq ft
30–45 days
Beet
Jan 1 – May 16
9 per sq ft
50–70 days
Carrot
Jan 1 – May 16
16 per sq ft
70–80 days
Garlic
Jan 1 – Nov 30
9 per sq ft
180–240 days
Peas
Jan 1 – Apr 8
8 per sq ft
55–70 days
Potato
Jan 1 – May 16
1 per sq ft
70–150 days
Radish
Jan 1 – Apr 23
16 per sq ft
22–30 days
Turnip
Jan 1 – May 16
9 per sq ft
30–60 days
Dill
Mar 1 – May 16
4 per sq ft
40–60 days
March Gardening Tips
- Start Tomato, Pepper, Cucumber indoors now to give them a head start before transplanting outside.
- Tomato, Squash, Zucchini can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
- Direct sow Carrot, Peas, Potato straight into the garden — no transplanting needed.
- Add compost to beds now so nutrients are available when planting time arrives.
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