What to Plant in June
Portland, ME · Zone 5b
Last frost: May 5
Frost-free days: 153
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
Chives
Cilantro
Dill
Mint
Oregano
Parsley
Sage
Thyme
Artichoke
Beans (Bush)
Beet
Broccoli
Brussels Sprouts
Cabbage
Carrot
Cauliflower
Celery
Kale
Leek
Lettuce
Onion
Peas
Potato
Radish
Spinach
Squash
Strawberry
Swiss Chard
Turnip
Zucchini
Start Indoors 8
Start these seeds indoors under grow lights or on a sunny windowsill.
Broccoli
Feb 15 – Jun 15
1 per sq ft
60–100 days
Cabbage
Feb 15 – Jun 8
1 per sq ft
70–100 days
Cauliflower
Feb 15 – Jun 15
1 per sq ft
55–100 days
Kale
Feb 22 – Jul 16
1 per sq ft
50–65 days
Lettuce
Mar 9 – Jun 15
4 per sq ft
45–60 days
Swiss Chard
Mar 9 – Jul 31
4 per sq ft
50–60 days
Squash
Apr 24 – Jun 15
1 per sq ft
45–65 days
Zucchini
Apr 24 – Jun 15
1 per sq ft
45–60 days
Transplant 22
Move these seedlings from indoors to your garden beds.
Chives
Apr 9 – Jun 30
9 per sq ft
60–90 days
Mint
Apr 9 – Jun 30
4 per sq ft
60–90 days
Parsley
Apr 9 – Jul 31
4 per sq ft
70–90 days
Broccoli
Apr 9 – Aug 8
1 per sq ft
60–100 days
Brussels Sprouts
Apr 9 – Jul 16
1 per sq ft
80–110 days
Cabbage
Apr 9 – Jul 31
1 per sq ft
70–100 days
Cauliflower
Apr 9 – Aug 8
1 per sq ft
55–100 days
Kale
Apr 9 – Aug 31
1 per sq ft
50–65 days
Leek
Apr 9 – Jun 23
4 per sq ft
90–150 days
Lettuce
Apr 9 – Jul 16
4 per sq ft
45–60 days
Onion
Apr 9 – Jun 30
9 per sq ft
100–120 days
Spinach
Apr 9 – Jun 23
9 per sq ft
35–50 days
Strawberry
Apr 9 – Jun 30
4 per sq ft
60–90 days
Swiss Chard
Apr 9 – Aug 31
4 per sq ft
50–60 days
Oregano
Apr 24 – Jun 30
1 per sq ft
60–90 days
Sage
Apr 24 – Jun 15
1 per sq ft
75–90 days
Thyme
Apr 24 – Jun 23
4 per sq ft
70–90 days
Artichoke
Apr 24 – Jul 16
1 per sq ft
85–100 days
Celery
Apr 24 – Jul 8
4 per sq ft
80–120 days
Squash
May 17 – Jul 8
1 per sq ft
45–65 days
Zucchini
May 17 – Jul 8
1 per sq ft
45–60 days
Cucumber
Jun 1–23
2 per sq ft
50–70 days
Growing guide
Direct Sow 9
Plant these seeds directly into the soil outdoors.
Cilantro
Apr 1 – Jul 16
9 per sq ft
30–45 days
Beet
Apr 1 – Sep 8
9 per sq ft
50–70 days
Peas
Apr 1 – Aug 31
8 per sq ft
55–70 days
Radish
Apr 1 – Jul 16
16 per sq ft
22–30 days
Turnip
Apr 1 – Sep 23
9 per sq ft
30–60 days
Carrot
Apr 9 – Aug 8
16 per sq ft
70–80 days
Potato
Apr 16 – Jul 8
1 per sq ft
70–150 days
Dill
Jun 1 – Jul 23
4 per sq ft
40–60 days
Beans (Bush)
Jun 1–30
9 per sq ft
50–60 days
June Gardening Tips
- Start Squash, Zucchini, Lettuce indoors now to give them a head start before transplanting outside.
- Cucumber, Squash, Zucchini 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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