What should I plant in March in Milwaukee, WI?

In March in Milwaukee, WI (zone 5b), you can plant Chives, Mint, Oregano, Parsley, Rosemary, and more. These dates are based on local climate data for your area.

When do I plant Chives in Milwaukee, WI?

In Milwaukee, WI (zone 5b), Chives: start seeds indoors Jan 24 – Apr 23, transplant outdoors Apr 1 – Jun 30.

When do I plant Mint in Milwaukee, WI?

In Milwaukee, WI (zone 5b), Mint: start seeds indoors Feb 1 – Apr 30, transplant outdoors Apr 1 – Jun 30.

When do I plant Oregano in Milwaukee, WI?

In Milwaukee, WI (zone 5b), Oregano: start seeds indoors Mar 1 – May 8, transplant outdoors Apr 24 – Jun 30.

What to Plant in March

Milwaukee, WI · Zone 5b

Last frost: Apr 25 Frost-free days: 173

Full year calendar for Milwaukee

Spring is still weeks away outdoors, but indoor seed starting is in full swing. Start tomatoes, peppers, and herbs under lights. Prepare beds for cool-season crops that go out next month.

March at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Chives

Mint

Oregano

Parsley

Rosemary

Sage

Thyme

Artichoke

Broccoli

Brussels Sprouts

Cabbage

Cauliflower

Celery

Kale

Leek

Lettuce

Onion

Radish

Spinach

Strawberry

Swiss Chard

Tomato

Turnip

Start Indoors 21

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

Plant now

Brussels Sprouts

Jan 1 – Mar 8

1 per sq ft 80–110 days

Leek

Jan 9 – Mar 31

4 per sq ft 90–150 days

Onion

Jan 9 – Apr 8

9 per sq ft 100–120 days

Chives

Jan 24 – Apr 23

9 per sq ft 60–90 days

Parsley

Jan 24 – May 23

4 per sq ft 70–90 days

Mint

Feb 1 – Apr 30

4 per sq ft 60–90 days

Celery

Feb 1 – Apr 15

4 per sq ft 80–120 days

Rosemary

Feb 8 – Mar 8

1 per sq ft 80–120 days

Thyme

Feb 15 – Apr 15

4 per sq ft 70–90 days

Artichoke

Feb 15 – May 8

1 per sq ft 85–100 days

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

Strawberry

Feb 15 – May 16

4 per sq ft 60–90 days

Kale

Feb 22 – Jul 16

1 per sq ft 50–65 days

Oregano

Mar 1 – May 8

1 per sq ft 60–90 days

Sage

Mar 1 – Apr 23

1 per sq ft 75–90 days

Lettuce

Mar 1 – May 31

4 per sq ft 45–60 days

Spinach

Mar 1 – May 16

9 per sq ft 35–50 days

Swiss Chard

Mar 1 – Jul 31

4 per sq ft 50–60 days

Later this month

Tomato

Mar 24 – Apr 23

1 per sq ft 65–80 days Growing guide

Direct Sow 2

Plant these seeds directly into the soil outdoors.

Radish

Mar 24 – Jun 30

16 per sq ft 22–30 days

Turnip

Mar 24 – Sep 30

9 per sq ft 30–60 days

March Gardening Tips

Start Tomato, Lettuce, Broccoli indoors now to give them a head start before transplanting outside.
Direct sow Radish, Turnip straight into the garden — no transplanting needed.
Add compost to beds now so nutrients are available when planting time arrives.