What should I plant in March in Boise, ID?

In March in Boise, ID (zone 6b), you can plant Chives, Cilantro, Mint, Oregano, Parsley, and more. These dates are based on local climate data for your area.

When do I plant Chives in Boise, ID?

In Boise, ID (zone 6b), Chives: start seeds indoors Jan 1 – Apr 15, transplant outdoors Mar 9 – Jun 23.

When do I plant Cilantro in Boise, ID?

In Boise, ID (zone 6b), Cilantro: direct sow Mar 1 – Jun 23 and Sep 9 – Sep 23.

When do I plant Mint in Boise, ID?

In Boise, ID (zone 6b), Mint: start seeds indoors Jan 9 – Apr 15, transplant outdoors Mar 9 – Jun 15.

What to Plant in March

Boise, ID · Zone 6b

Last frost: Apr 15 Frost-free days: 183

Full year calendar for Boise

Spring is building momentum. Start tomatoes and peppers indoors if you haven't already. Cool-season crops like peas, spinach, and lettuce can go outdoors once the soil is workable.

March at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Chives

Cilantro

Mint

Oregano

Parsley

Sage

Thyme

Artichoke

Beet

Broccoli

Brussels Sprouts

Cabbage

Carrot

Cauliflower

Celery

Garlic

Kale

Leek

Lettuce

Onion

Peas

Radish

Spinach

Strawberry

Swiss Chard

Turnip

Start Indoors 18

Start these seeds indoors under grow lights or on a sunny windowsill.

Chives

Jan 1 – Apr 15

9 per sq ft 60–90 days

Parsley

Jan 1 – May 16

4 per sq ft 70–90 days

Leek

Jan 1 – Mar 31

4 per sq ft 90–150 days

Onion

Jan 1 – Apr 8

9 per sq ft 100–120 days

Mint

Jan 9 – Apr 15

4 per sq ft 60–90 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

Celery

Jan 24 – Apr 8

4 per sq ft 80–120 days

Kale

Jan 24 – Jun 8

1 per sq ft 50–65 days

Strawberry

Jan 24 – Apr 30

4 per sq ft 60–90 days

Thyme

Feb 8 – Mar 23

4 per sq ft 70–90 days

Artichoke

Feb 8 – Apr 23

1 per sq ft 85–100 days

Lettuce

Feb 8 – May 23

4 per sq ft 45–60 days

Spinach

Feb 8 – Apr 30

9 per sq ft 35–50 days

Swiss Chard

Feb 8 – Jun 23

4 per sq ft 50–60 days

Oregano

Feb 22 – Apr 23

1 per sq ft 60–90 days

Sage

Feb 22 – Mar 31

1 per sq ft 75–90 days

Transplant 14

Move these seedlings from indoors to your garden beds.

Chives

Mar 9 – Jun 23

9 per sq ft 60–90 days

Mint

Mar 9 – Jun 15

4 per sq ft 60–90 days

Parsley

Mar 9 – Jul 23

4 per sq ft 70–90 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 – Jul 23

1 per sq ft 50–65 days

Leek

Mar 9 – Jun 23

4 per sq ft 90–150 days

Lettuce

Mar 9 – Jun 23

4 per sq ft 45–60 days

Onion

Mar 9 – Jun 30

9 per sq ft 100–120 days

Spinach

Mar 9 – May 31

9 per sq ft 35–50 days

Strawberry

Mar 9 – Jun 15

4 per sq ft 60–90 days

Swiss Chard

Mar 9 – Jul 23

4 per sq ft 50–60 days

Direct Sow 7

Plant these seeds directly into the soil outdoors.

Garlic

Jan 1 – Jun 30

9 per sq ft 180–240 days

Cilantro

Mar 1 – Jun 23

9 per sq ft 30–45 days

Beet

Mar 1 – Jul 23

9 per sq ft 50–70 days

Peas

Mar 1 – Jun 23

8 per sq ft 55–70 days

Radish

Mar 1 – Jun 23

16 per sq ft 22–30 days

Turnip

Mar 1 – Jul 23

9 per sq ft 30–60 days

Carrot

Mar 9 – Jul 23

16 per sq ft 70–80 days

March Gardening Tips

Start Lettuce, Broccoli, Cabbage indoors now to give them a head start before transplanting outside.
Lettuce, Broccoli, Cabbage can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
Direct sow Carrot, Peas, Garlic straight into the garden — no transplanting needed.
Add compost to beds now so nutrients are available when planting time arrives.