Planting calendar
April Planting Guide for San Jose, CA: Raised Beds, Containers & In-Ground Gardens
April in San Jose is ideal for planting a variety of warm-season vegetables and herbs in raised beds, containers, and in-ground gardens. Focus on crops that thrive as temperatures rise and the risk of frost diminishes. This guide helps you maximize your garden’s productivity this month.
Plant now (quick list)
Tomatoes, Peppers, Eggplants, Basil, Zucchini, Cucumbers, Beans, Melons
Plant now
- Tomatoes
- Peppers
- Eggplants
- Basil
- Zucchini
- Cucumbers
- Beans
- Melons
- Corn
Start indoors
- Winter squash
- Pumpkins
- Brussels sprouts
- Broccoli (for late summer transplant)
- Cauliflower (for late summer transplant)
- Cabbage (for late summer transplant)
Avoid
- Leafy greens like lettuce and spinach (bolting risk in heat)
- Peas (past prime planting window)
- Root crops like carrots and beets (may struggle in warming soil)
- Potatoes (better planted earlier)
- Brassicas that prefer cooler weather
Next 2 weeks
- Harden off indoor seedlings before transplanting
- Mulch around plants to retain moisture and reduce weeds
- Monitor soil moisture closely in containers
- Start trellises or supports for vining crops
- Begin regular fertilization for heavy feeders
FAQs
Can I plant tomatoes directly in the ground in April in San Jose?
Yes, April is a good time to transplant tomato seedlings outdoors as the risk of frost is minimal and soil temperatures are warming.
How often should I water container plants during April?
Water containers daily or as needed to keep soil consistently moist but not waterlogged, as containers dry out faster than in-ground beds.
Is it too late to plant peas in April in San Jose?
Yes, peas prefer cooler weather and are best planted earlier in the season; April is generally past the ideal planting window.
What vegetables can I start indoors in April for summer harvest?
Start warm-season crops like winter squash, pumpkins, and late-season brassicas indoors to transplant later in summer.
Should I be concerned about pests in April?
Yes, as temperatures rise, watch for aphids, whiteflies, and caterpillars; early monitoring and control help protect young plants.
Next steps
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