Zone 4 · June · 4 weeks after last frost
What to plant in June in Zone 4
Typical last frost in zone 4 is around May 15, and first frost around Sep 25. Everything is in the ground. Work shifts from sowing to staking, feeding and watering — and to planning the autumn crop.
Start indoors this month
Seed trays indoors, under a light or in the brightest window you have. These are slow crops that need a head start on the season.
Nothing in our dataset needs an indoor start this month in this zone.
Set out into the final container
Transplants go into the pot they will finish in. Hardening them off for four to five days first prevents most transplant shock.
- Cherry Tomato — window May 22 – Jun 1 (5 gal, 12" deep)
- Basil — window May 29 – Jun 8 (2 gal, 8" deep)
- Bush Cucumber — window May 22 – Jun 1 (5 gal, 12" deep)
- Zucchini — window May 22 – Jun 1 (7 gal, 14" deep)
- Hot Pepper — window May 29 – Jun 8 (3 gal, 12" deep)
Direct sow
Sow straight into the final pot. These crops resent root disturbance, and transplanting them usually costs more time than it saves.
- Bush Bean — window May 22 – Jun 12 (3 gal, 9" deep)
- Bush Cucumber — window May 22 – Jun 12 (5 gal, 12" deep)
- Zucchini — window May 22 – Jun 12 (7 gal, 14" deep)
Sow for autumn
A second sowing timed backwards from first frost. Fewer pests, less watering, and better flavour in most cool crops.
No autumn sowing window opens this month in this zone.
Harvesting this month
- Loose-leaf Lettuce — harvest from Jun 29 (2 gal, 6" deep)
- Radish — harvest from May 22 (1 gal, 6" deep)
- Kale — harvest from Jun 25 (3 gal, 10" deep)
- Spinach — harvest from Jun 8 (2 gal, 6" deep)
Not this month
Everything in the dataset is either in an active window or already finished for the year. Nothing is badly timed this month.
Zone 4 at a glance
Zone 4 runs about 110–120 frost-free days. The real risk is a late frost in mid-May, not a cold summer, so the temptation to plant out early is the main mistake here.
Next and previous
May in zone 4 · —