Planting calendar
June Planting Guide for Seattle, WA: Raised Beds, Containers, and In-Ground Gardens
In June, Seattle gardeners can focus on warm-season crops and late spring plantings in raised beds, containers, and in-ground gardens. This is an ideal time to plant heat-tolerant vegetables and herbs while continuing to nurture transplants started earlier. Avoid frost-sensitive plants that need cooler conditions as summer approaches.
Plant now (quick list)
Tomatoes, Peppers, Zucchini, Bush beans, Cucumbers, Basil, Dill, Swiss chard
Plant now
- Tomatoes
- Peppers
- Zucchini
- Bush beans
- Cucumbers
- Basil
- Dill
- Swiss chard
- Eggplant
- Summer squash
Start indoors
- Fall broccoli
- Brussels sprouts
- Cabbage
- Kale
- Cauliflower
- Lettuce (for fall harvest)
- Spinach (for fall harvest)
- Collard greens
Avoid
- Peas (too late to plant)
- Potatoes (harvest time, not planting)
- Cool-season root crops like radishes
- Leafy greens that bolt quickly in heat
- Early spring bulbs
Next 2 weeks
- Continue planting heat-loving herbs like oregano and thyme
- Thin seedlings in raised beds and containers
- Mulch around plants to conserve moisture
- Water consistently, especially in containers
- Watch for pests like aphids and slugs
- Stake taller plants like tomatoes and peppers
- Fertilize container plants every 2 weeks
- Harvest early crops like lettuce and peas
- Succession plant bush beans for continuous harvest
FAQs
Can I plant tomatoes directly in the ground in June in Seattle?
Yes, June is a good time to plant tomato transplants outdoors in Seattle when the soil has warmed and frost risk is minimal.
What vegetables should I avoid planting now in Seattle?
Avoid planting cool-season crops like peas and radishes as they will bolt or fail due to warming temperatures.
Is it necessary to mulch raised beds in June?
Mulching helps retain soil moisture and suppress weeds, which is especially beneficial as temperatures rise in June.
Can I start fall crops indoors in June?
Yes, starting brassicas like broccoli and cabbage indoors now allows for transplanting in late summer for a fall harvest.
How often should I water container plants in June?
Container plants typically need daily watering in June due to faster drying; check soil moisture regularly to avoid stress.
Next steps
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