What to Plant in April
Providence, RI · Zone 6b
Last frost: Apr 15
Frost-free days: 188
Garden season is starting in earnest. Direct sow cool-season crops outdoors and continue nurturing warm-season transplants indoors. Watch your last frost date for transplanting timing.
April at a Glance
Indoor
Transplant
Direct Sow
1
5
10
15
20
25
Chives
Cilantro
Lavender
Mint
Oregano
Parsley
Rosemary
Sage
Thyme
Artichoke
Beet
Broccoli
Brussels Sprouts
Cabbage
Carrot
Cauliflower
Celery
Garlic
Kale
Leek
Lettuce
Onion
Peas
Potato
Radish
Spinach
Squash
Strawberry
Sunflower
Swiss Chard
Turnip
Zucchini
Start Indoors 22
Start these seeds indoors under grow lights or on a sunny windowsill.
Plant now
Leek
Jan 9 – Apr 8
4 per sq ft
90–150 days
Onion
Jan 9 – Apr 15
9 per sq ft
100–120 days
Celery
Jan 17 – Apr 15
4 per sq ft
80–120 days
Chives
Jan 24 – Apr 23
9 per sq ft
60–90 days
Parsley
Jan 24 – May 31
4 per sq ft
70–90 days
Mint
Feb 1 – Apr 30
4 per sq ft
60–90 days
Thyme
Feb 1 – Apr 15
4 per sq ft
70–90 days
Artichoke
Feb 1 – May 8
1 per sq ft
85–100 days
Broccoli
Feb 8 – Jun 23
1 per sq ft
60–100 days
Cabbage
Feb 8 – Jun 15
1 per sq ft
70–100 days
Cauliflower
Feb 8 – Jun 23
1 per sq ft
55–100 days
Oregano
Feb 15 – May 8
1 per sq ft
60–90 days
Sage
Feb 15 – Apr 23
1 per sq ft
75–90 days
Kale
Feb 15 – Jul 23
1 per sq ft
50–65 days
Strawberry
Feb 15 – May 16
4 per sq ft
60–90 days
Lettuce
Mar 1 – May 23
4 per sq ft
45–60 days
Spinach
Mar 1 – May 8
9 per sq ft
35–50 days
Swiss Chard
Mar 1 – Aug 8
4 per sq ft
50–60 days
Tomato
Mar 17 – Apr 15
1 per sq ft
65–80 days
Growing guide
Sunflower
Apr 1–23
1 per sq ft
70–100 days
Later this month
Squash
Apr 16 – Jun 15
1 per sq ft
45–65 days
Zucchini
Apr 16 – Jun 15
1 per sq ft
45–60 days
Transplant 22
Move these seedlings from indoors to your garden beds.
Plant now
Chives
Apr 1 – Jun 30
9 per sq ft
60–90 days
Mint
Apr 1 – Jun 30
4 per sq ft
60–90 days
Parsley
Apr 1 – Aug 8
4 per sq ft
70–90 days
Broccoli
Apr 1 – Aug 16
1 per sq ft
60–100 days
Brussels Sprouts
Apr 1 – Jul 23
1 per sq ft
80–110 days
Cabbage
Apr 1 – Aug 8
1 per sq ft
70–100 days
Cauliflower
Apr 1 – Aug 16
1 per sq ft
55–100 days
Kale
Apr 1 – Sep 8
1 per sq ft
50–65 days
Leek
Apr 1 – Jun 30
4 per sq ft
90–150 days
Lettuce
Apr 1 – Jun 23
4 per sq ft
45–60 days
Onion
Apr 1 – Jul 8
9 per sq ft
100–120 days
Spinach
Apr 1 – Jun 8
9 per sq ft
35–50 days
Strawberry
Apr 1 – Jun 30
4 per sq ft
60–90 days
Swiss Chard
Apr 1 – Sep 8
4 per sq ft
50–60 days
Lavender
Apr 9–30
1 per sq ft
90–120 days
Oregano
Apr 9 – Jun 30
1 per sq ft
60–90 days
Rosemary
Apr 9 – May 23
1 per sq ft
80–120 days
Sage
Apr 9 – Jun 15
1 per sq ft
75–90 days
Thyme
Apr 9 – Jun 23
4 per sq ft
70–90 days
Artichoke
Apr 9 – Jul 16
1 per sq ft
85–100 days
Celery
Apr 9 – Jul 8
4 per sq ft
80–120 days
Later this month
Sunflower
Apr 24 – May 16
1 per sq ft
70–100 days
Direct Sow 8
Plant these seeds directly into the soil outdoors.
Garlic
Jan 1 – Jul 31
9 per sq ft
180–240 days
Cilantro
Mar 17 – Jun 23
9 per sq ft
30–45 days
Beet
Mar 17 – Sep 15
9 per sq ft
50–70 days
Peas
Mar 17 – Jul 16
8 per sq ft
55–70 days
Turnip
Mar 17 – Oct 8
9 per sq ft
30–60 days
Radish
Mar 24 – Jun 23
16 per sq ft
22–30 days
Carrot
Apr 1 – Aug 8
16 per sq ft
70–80 days
Potato
Apr 9 – Jul 16
1 per sq ft
70–150 days
April Gardening Tips
- Start Tomato, Squash, Zucchini indoors now to give them a head start before transplanting outside.
- Lettuce, Broccoli, Cabbage 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.
- Soil temperature matters more than air temperature for germination. Use a soil thermometer before direct sowing.
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