What to Plant in March — Zone 6
One of the most popular gardening zones with a generous season for warm and cool-season crops alike.
Quick Answer
In zone 6 during March, early spring — soil preparation begins, cool-season crops go outside, and indoor seedlings need attention. Your key tasks this month: start tomatoes indoors 6-8 weeks before last frost, direct sow peas, spinach, and radishes outdoors, and transplant broccoli and cabbage seedlings with protection.
March Gardening Tasks for Zone 6
March is early spring — soil preparation begins, cool-season crops go outside, and indoor seedlings need attention. Zone 6 has a frost-free window from April 30 – Oct 15, which shapes what you can plant and when. Here is your complete task list:
Plant Guides for This Month
These plants are mentioned in your March tasks. Read their full growing guides for detailed planting instructions:
Tomato
America's most popular garden vegetable, tomatoes come in thousands of varieties…
Spinach
Spinach is a cool-weather superstar packed with iron and vitamins. It grows quic…
Broccoli
Homegrown broccoli has a depth of flavor that supermarket heads simply can't mat…
Cabbage
Cabbage is a cool-weather workhorse that stores for months and serves as the bas…
Radish
Radishes are the fastest crop in the garden—ready in under a month from seed. Th…
Helpful Guides for March
These gardening guides are especially useful this time of year:
- Seed Starting Indoors — essential if you're starting transplants this month
- Companion Planting Guide — plan your layout for maximum yield
- Organic Pest Control — prepare defenses as the season progresses
- Building Better Soil — start any month to improve next season's harvests
- Pest & Disease Library — identify and solve common garden problems organically
- Browse All Plant Guides — detailed growing instructions for every crop
Frequently Asked Questions
What should I plant in March in zone 6?
In zone 6 during March, focus on: Start tomatoes indoors 6-8 weeks before last frost. Direct sow peas, spinach, and radishes outdoors. Transplant broccoli and cabbage seedlings with protection. The frost-free period for zone 6 is April 30 – Oct 15.
Is it too late to plant in March in zone 6?
March is a productive month in zone 6. One of the most popular gardening zones with a generous season for warm and cool-season crops alike. Check each crop's days to maturity against your remaining frost-free window (April 30 – Oct 15).
What is USDA zone 6?
USDA Zone 6 has a frost-free growing season from approximately April 30 – Oct 15. One of the most popular gardening zones with a generous season for warm and cool-season crops alike.