Planting calendar
March Planting Guide for Boston, MA: Raised Beds, Containers & In-Ground
In March, Boston gardeners can start planting cool-season crops directly outdoors and begin warm-season seeds indoors. Focus on hardy vegetables and early herbs in raised beds, containers, and in-ground gardens to get a head start on spring growth.
Plant now (quick list)
spinach, kale, lettuce, radishes, peas, onions sets, potatoes, carrots
Plant now
- spinach
- kale
- lettuce
- radishes
- peas
- onions sets
- potatoes
- carrots
- beets
- chard
Start indoors
- tomatoes
- peppers
- eggplants
- basil
- broccoli
- cauliflower
- cabbage
- celery
- herbs (parsley, thyme)
- melons
Avoid
- beans
- corn
- cucumbers
- squash
- pumpkins
- sweet potatoes
- tomatoes outdoors
- peppers outdoors
- eggplants outdoors
- basil outdoors
Next 2 weeks
- harden off indoor seedlings
- prepare soil with compost
- monitor soil moisture
- remove winter mulch gradually
- start planting early potatoes
- thin seedlings in raised beds
- install supports for peas
- check for pests
- plan crop rotation
- clean and sharpen garden tools
FAQs
When can I transplant tomatoes outdoors in Boston?
Transplant tomatoes outdoors after the last frost date, typically mid to late May, when nighttime temperatures stay above 50°F.
Can I plant peas directly in March?
Yes, peas are cold-tolerant and can be sown directly outdoors in March as soon as the soil is workable.
How do I protect early seedlings from late frosts?
Use row covers, cloches, or cold frames to shield seedlings during unexpected cold snaps.
Is it better to start seeds indoors or direct sow in March?
Cool-season crops like lettuce and spinach can be direct sown, while warm-season crops like tomatoes should be started indoors.
What soil preparation is recommended in March?
Incorporate compost and ensure good drainage to prepare beds for spring planting.
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