What to Plant in June
USDA Zone 4a
Last frost: May 1 – May 15
Frost-free days: 120–150
The growing season is in full swing. Transplant any remaining warm-season crops and direct sow fast-growing varieties. Succession-plant beans and greens every two weeks.
June at a Glance
Indoor
Transplant
Direct Sow
1
5
10
15
20
25
Today
Zinnias
Sunflowers
Cosmos
Dahlias
Basil
Dill
Peppers
Eggplant
Lettuce
Beans (bush)
Beans (pole)
Cucumbers
Summer Squash
Winter Squash
Pumpkins
Corn
Radishes
Celery
Transplant 9
Move these seedlings from indoors to your garden beds.
Celery
May 15 – Jun 1
4 per sq ft
80–120 days
Dahlias
May 20 – Jun 1
Peppers
May 20 – Jun 1
1 per sq ft
60–100 days
Cucumbers
May 20 – Jun 1
2 per sq ft
50–70 days
Summer Squash
May 20 – Jun 1
Winter Squash
May 20 – Jun 1
Pumpkins
May 20 – Jun 1
¼ per sq ft
85–120 days
Basil
May 25 – Jun 5
4 per sq ft
25–35 days
Eggplant
May 25 – Jun 5
1 per sq ft
70–90 days
Direct Sow 13
Plant these seeds directly into the soil outdoors.
Lettuce
Apr 15 – Jun 1
4 per sq ft
45–60 days
Radishes
Apr 15 – Aug 1
16 per sq ft
22–30 days
Dill
May 1 – Jun 1
4 per sq ft
40–60 days
Sunflowers
May 15 – Jun 1
1 per sq ft
70–100 days
Cosmos
May 15 – Jun 1
Beans (bush)
May 15 – Jun 1
9 per sq ft
50–60 days
Beans (pole)
May 15 – Jun 1
Corn
May 15 – Jun 1
1 per sq ft
60–100 days
Zinnias
May 20 – Jun 1
Cucumbers
May 20 – Jun 1
2 per sq ft
50–70 days
Summer Squash
May 20 – Jun 5
Winter Squash
May 20 – Jun 1
Pumpkins
May 20 – Jun 1
¼ per sq ft
85–120 days
June Gardening Tips
- Eggplant, Celery, Dahlias can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
- Direct sow Corn, Lettuce, Radishes straight into the garden — no transplanting needed.
- Water deeply but less often to encourage deep root growth. Morning watering reduces disease risk.
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