What to Plant in April
Cincinnati, OH · Zone 6b
Last frost: Apr 12
Frost-free days: 193
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
Start Indoors 27
Start these seeds indoors under grow lights or on a sunny windowsill.
Plant now
Chives
Jan 1 – Apr 30
9 per sq ft
60–90 days
Mint
Jan 1 – May 8
4 per sq ft
60–90 days
Parsley
Jan 1 – Jun 15
4 per sq ft
70–90 days
Celery
Jan 1 – Apr 8
4 per sq ft
80–120 days
Leek
Jan 1 – Apr 15
4 per sq ft
90–150 days
Onion
Jan 1 – Apr 23
9 per sq ft
100–120 days
Thyme
Jan 17 – Apr 23
4 per sq ft
70–90 days
Artichoke
Jan 17 – May 8
1 per sq ft
85–100 days
Broccoli
Jan 17 – May 8
1 per sq ft
60–100 days
Cabbage
Jan 17 – May 8
1 per sq ft
70–100 days
Cauliflower
Jan 17 – May 8
1 per sq ft
55–100 days
Strawberry
Jan 17 – May 23
4 per sq ft
60–90 days
Kale
Jan 24 – Jul 31
1 per sq ft
50–65 days
Oregano
Feb 1 – May 16
1 per sq ft
60–90 days
Sage
Feb 1 – Apr 30
1 per sq ft
75–90 days
Lettuce
Feb 1 – May 8
4 per sq ft
45–60 days
Spinach
Feb 1 – Apr 15
9 per sq ft
35–50 days
Swiss Chard
Feb 1 – Aug 16
4 per sq ft
50–60 days
Pepper
Mar 1 – Apr 8
1 per sq ft
60–100 days
Growing guide
Tomato
Mar 1 – Apr 30
1 per sq ft
65–80 days
Growing guide
Sunflower
Mar 17 – May 16
1 per sq ft
70–100 days
Squash
Apr 1 – Jun 23
1 per sq ft
45–65 days
Zucchini
Apr 1 – Jun 23
1 per sq ft
45–60 days
Okra
Apr 9 – May 23
1 per sq ft
50–65 days
Later this month
Cucumber
Apr 16 – Jun 15
2 per sq ft
50–70 days
Growing guide
Melon
Apr 16 – May 8
½ per sq ft
70–90 days
Watermelon
Apr 16–30
¼ per sq ft
70–90 days
Transplant 25
Move these seedlings from indoors to your garden beds.
Plant now
Chives
Mar 1 – Jul 8
9 per sq ft
60–90 days
Mint
Mar 1 – Jul 8
4 per sq ft
60–90 days
Parsley
Mar 1 – Aug 23
4 per sq ft
70–90 days
Leek
Mar 1 – Jul 8
4 per sq ft
90–150 days
Lettuce
Mar 1 – Jun 8
4 per sq ft
45–60 days
Onion
Mar 1 – Jul 16
9 per sq ft
100–120 days
Spinach
Mar 1 – May 16
9 per sq ft
35–50 days
Strawberry
Mar 1 – Jul 8
4 per sq ft
60–90 days
Swiss Chard
Mar 1 – Sep 15
4 per sq ft
50–60 days
Broccoli
Mar 9 – Jun 30
1 per sq ft
60–100 days
Brussels Sprouts
Mar 9 – Jun 30
1 per sq ft
80–110 days
Cabbage
Mar 9 – Jun 30
1 per sq ft
70–100 days
Cauliflower
Mar 9 – Jun 30
1 per sq ft
55–100 days
Kale
Mar 9 – Sep 15
1 per sq ft
50–65 days
Lavender
Mar 24 – May 23
1 per sq ft
90–120 days
Oregano
Mar 24 – Jul 8
1 per sq ft
60–90 days
Rosemary
Mar 24 – Jun 8
1 per sq ft
80–120 days
Sage
Mar 24 – Jun 23
1 per sq ft
75–90 days
Thyme
Mar 24 – Jun 30
4 per sq ft
70–90 days
Artichoke
Mar 24 – Jul 16
1 per sq ft
85–100 days
Celery
Mar 24 – Jun 30
4 per sq ft
80–120 days
Sunflower
Apr 9 – Jun 8
1 per sq ft
70–100 days
Later this month
Squash
Apr 24 – Jul 16
1 per sq ft
45–65 days
Tomato
Apr 24 – Jun 23
1 per sq ft
65–80 days
Growing guide
Zucchini
Apr 24 – Jul 16
1 per sq ft
45–60 days
Direct Sow 8
Plant these seeds directly into the soil outdoors.
Garlic
Jan 1 – Aug 31
9 per sq ft
180–240 days
Cilantro
Mar 1 – Jun 8
9 per sq ft
30–45 days
Beet
Mar 1 – Sep 23
9 per sq ft
50–70 days
Peas
Mar 1 – Jun 30
8 per sq ft
55–70 days
Radish
Mar 1 – Jun 8
16 per sq ft
22–30 days
Turnip
Mar 1 – Oct 8
9 per sq ft
30–60 days
Carrot
Mar 9 – Aug 23
16 per sq ft
70–80 days
Potato
Mar 24 – Jul 23
1 per sq ft
70–150 days
April 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.
- Soil temperature matters more than air temperature for germination. Use a soil thermometer before direct sowing.
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