Planting calendar
June Planting Guide for Seattle, WA: Raised Beds, Containers & In-Ground Gardens
In June, Seattle gardeners can focus on planting warm-season vegetables and herbs in raised beds, containers, and in-ground gardens. This is an ideal time to transplant seedlings and sow heat-tolerant crops while continuing to care for early spring plantings.
Plant now (quick list)
Tomatoes, Peppers, Beans, Zucchini, Cucumbers, Basil, Dill, Marigolds
Plant now
- Tomatoes
- Peppers
- Beans
- Zucchini
- Cucumbers
- Basil
- Dill
- Marigolds
Start indoors
- Fall broccoli
- Cabbage
- Cauliflower
- Kale
- Brussels sprouts
- Lettuce (for fall harvest)
Avoid
- Peas (too warm now)
- Spinach (bolts quickly in heat)
- Potatoes (harvested earlier in season)
- Cool-season root crops (late sowing risks poor yield)
- Late-season lettuce (heat stress)
Next 2 weeks
- Transplant tomato and pepper seedlings outdoors after hardening off
- Mulch raised beds to retain moisture
- Water containers daily as temperatures rise
- Pinch basil regularly to encourage bushy growth
- Watch for pests like aphids and caterpillars
FAQs
Can I plant tomatoes directly in the ground in June in Seattle?
Yes, June is a good time to transplant tomato seedlings outdoors after hardening them off to avoid frost damage.
How often should I water container plants in June?
Container plants typically need daily watering in June due to warmer temperatures and faster drying soil.
Is it too late to start lettuce in June?
Starting lettuce in June is not recommended as warmer weather causes it to bolt quickly; start lettuce indoors for a fall harvest instead.
What vegetables can I start indoors now for fall planting?
Broccoli, cabbage, cauliflower, kale, and Brussels sprouts can be started indoors in June for transplanting in late summer.
Should I mulch my raised beds in June?
Yes, mulching helps retain soil moisture and regulate temperature, which is beneficial during warmer June weather.
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