Planting calendar
April Planting Guide for Detroit, MI: Raised Beds, Containers & In-Ground
April in Detroit is ideal for planting cool-season crops and starting warm-season vegetables indoors. Use raised beds, containers, or in-ground plots to grow hardy greens, root vegetables, and prepare for summer planting. Focus on crops that tolerate light frost and begin indoor sowing for heat-loving plants.
Plant now (quick list)
lettuce, spinach, kale, radishes, carrots, peas, beets, broccoli transplants
Plant now
- lettuce
- spinach
- kale
- radishes
- carrots
- peas
- beets
- broccoli transplants
- cauliflower transplants
- onion sets
Start indoors
- tomatoes
- peppers
- eggplants
- basil
- cucumbers
- melons
- pumpkins
- squash
- corn
- beans
Avoid
- warm-season crops directly outdoors (e.g., tomatoes, peppers)
- tender herbs (e.g., basil) outdoors
- potatoes (wait until soil warms)
- sweet potatoes
- corn (unless soil is warm)
- cucumbers (direct sowing outdoors)
- melons (direct sowing outdoors)
- pumpkins (direct sowing outdoors)
- summer squash (direct sowing outdoors)
- beans (direct sowing outdoors)
Next 2 weeks
- harden off indoor seedlings before transplanting
- direct sow peas and root vegetables
- prepare soil with compost for warm-season crops
- monitor frost forecasts and protect tender plants
- start transplanting broccoli and cauliflower seedlings outdoors
- thin seedlings for better growth
- mulch raised beds to retain moisture
- water early in the day to prevent disease
- prune overwintered herbs
- clean and maintain garden tools
FAQs
Can I plant tomatoes outdoors in April in Detroit?
No, tomatoes are sensitive to frost and should be started indoors in April and transplanted outdoors after the last frost, typically in late May.
What vegetables can I plant directly outdoors in April?
Cool-season crops like lettuce, spinach, peas, radishes, carrots, and beets can be sown directly outdoors in April.
How do I protect young seedlings from late frosts?
Use row covers, cloches, or cold frames to shield seedlings during cold nights and remove them during the day for ventilation.
When should I start hardening off indoor seedlings?
Begin hardening off seedlings about 1-2 weeks before transplanting them outdoors by gradually exposing them to outdoor conditions.
Is it necessary to fertilize raised beds in April?
Yes, adding compost or a balanced fertilizer in April helps replenish nutrients and supports healthy early growth.
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