What to Plant in June
Hartford, CT · Zone 6b
Last frost: Apr 25
Frost-free days: 173
The garden is established and growing fast. Focus on succession planting, keeping up with watering, and starting fall-season crops indoors if your first frost comes early.
June at a Glance
Indoor
Transplant
Direct Sow
Start Indoors 6
Start these seeds indoors under grow lights or on a sunny windowsill.
Broccoli
Feb 8 – Jun 15
1 per sq ft
60–100 days
Cauliflower
Feb 8 – Jun 23
1 per sq ft
55–100 days
Kale
Feb 15 – Jul 16
1 per sq ft
50–65 days
Swiss Chard
Mar 1 – Jul 31
4 per sq ft
50–60 days
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 23
Move these seedlings from indoors to your garden beds.
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 – Jul 16
1 per sq ft
60–100 days
Brussels Sprouts
Apr 1 – Jul 16
1 per sq ft
80–110 days
Cabbage
Apr 1 – Jul 16
1 per sq ft
70–100 days
Cauliflower
Apr 1 – Jul 16
1 per sq ft
55–100 days
Kale
Apr 1 – Aug 31
1 per sq ft
50–65 days
Leek
Apr 1 – Jun 23
4 per sq ft
90–150 days
Lettuce
Apr 1 – Jun 23
4 per sq ft
45–60 days
Onion
Apr 1 – Jun 30
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 – Aug 31
4 per sq ft
50–60 days
Oregano
Apr 9 – Jun 30
1 per sq ft
60–90 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 16
4 per sq ft
80–120 days
Squash
May 9 – Jul 8
1 per sq ft
45–65 days
Tomato
May 9 – Jun 8
1 per sq ft
65–80 days
Growing guide
Zucchini
May 9 – Jul 8
1 per sq ft
45–60 days
Cucumber
May 24 – Jun 23
2 per sq ft
50–70 days
Growing guide
Direct Sow 10
Plant these seeds directly into the soil outdoors.
Garlic
Jan 1 – Jul 23
9 per sq ft
180–240 days
Beet
Mar 17 – Sep 15
9 per sq ft
50–70 days
Peas
Mar 17 – Jul 8
8 per sq ft
55–70 days
Cilantro
Mar 24 – Jun 23
9 per sq ft
30–45 days
Radish
Mar 24 – Jun 23
16 per sq ft
22–30 days
Turnip
Mar 24 – Sep 30
9 per sq ft
30–60 days
Carrot
Apr 1 – Aug 8
16 per sq ft
70–80 days
Potato
Apr 9 – Jul 8
1 per sq ft
70–150 days
Dill
May 17 – Aug 8
4 per sq ft
40–60 days
Beans (Bush)
May 17 – Jul 8
9 per sq ft
50–60 days
June Gardening Tips
- Start Squash, Zucchini, Broccoli indoors now to give them a head start before transplanting outside.
- Tomato, Cucumber, Squash can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
- Direct sow Beans (Bush), Carrot, Peas 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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