What to Plant in June in Washington State

Warm-season vegetables can be planted outside as weather warms in May and June. The best choices depend on your local growing conditions. Start with the regional differences below, then use the planting table to choose seeds or starts, and leave room for crops you’ll harvest in fall.

Why June Planting Varies Across Washington

June is not too late to start a Washington vegetable garden. In many locations, it is when warm-season planting becomes practical. A planting calendar cannot account for the difference between a sheltered garden and an exposed garden.

Western Washington

Some gardens have limited summer heat. A long frost-free season does not necessarily provide enough warmth to ripen a late tomato or melon.

Choose early-maturing warm-season varieties, give them your sunniest location, and keep growing leafy greens and root crops where summer temperatures remain moderate. Coastal exposure and shade can make a garden noticeably cooler than a nearby sheltered site.

Warmer Inland Valleys

Warm sites can offer better conditions for heat-loving crops such as peppers and eggplant. The main summer challenge shifts toward keeping new plantings adequately watered as temperatures rise.

Cool-season vegetables need more careful placement here. Lettuce that grows comfortably in a maritime garden may bolt, send up a flower stalk and become bitter, in an exposed inland bed.

Cooler and Higher-Elevation Gardens

Do not assume every garden has a long, hot growing season. Some gardens can have later spring frosts and an earlier end to the growing season.

Favor short-season varieties and established transplants for crops that take longer to mature.

How to Plant a Washington Garden in June

Plant a June Washington garden by matching crops and varieties to local frost risk, microclimate, season length and sunny sites.

Step 1: Match Your Planting List to Your Location

Use a ZIP-code guide to shortlist crops, then let your garden’s microclimate and frost risk determine what goes outside.

Enter your ZIP code in Urban Farmer’s June planting guide to generate candidate crops and planting tasks for your location.
Adjust that list for local frost dates, elevation and exposure using WSU Extension’s Home Vegetable Gardening in Washington. Check the current forecast as well: historical frost dates are planning tools, not guarantees.
Choose a bed or container location with at least 6–8 hours of direct sun each day for most warm-season vegetables.

Compare June vegetable options by starting method, suitable growing conditions and main limitations:

Crop	Start With in June	Best Fit and Main Limitation
Bush, pole and runner beans	Seeds directly outdoors	Good choices once the soil is warm; bush beans are convenient when starting later
Zucchini and summer squash	Seeds or young transplants	Productive summer choices after frost risk has passed; allow room for mature plants
Cucumbers	Seeds or young transplants	Choose varieties suited to your local growing conditions.
Tomatoes	Transplants	Cherry and early-maturing varieties are the most dependable choices in cooler gardens
Peppers and eggplant	Transplants	Best in warm, protected sites; eggplant is less dependable in cool coastal gardens
Carrots and beets	Seeds directly outdoors	Useful June root crops where the seedbed can stay moist during germination
Swiss chard and kale	Seeds or transplants	Practical leafy crops across much of the state
Lettuce	Seeds or transplants	Best in cooler locations; choose heat-tolerant varieties and afternoon shade in hot areas
Sweet corn	Seeds directly outdoors	Strongest option in warm sites; choose varieties suited to the local season
Winter squash and pumpkins	Seeds or young transplants	Favor early June and early-maturing varieties, especially in cooler gardens
Melons	Young transplants	Most promising in warm inland locations; a higher-risk choice in exposed maritime gardens

Step 2: Choose Varieties That Can Finish the Season

Buy starts when the crop needs a head start. For a June garden, nursery transplants are generally the practical choice for long-season heat-loving crops. Starting those crops from seed indoors now uses valuable growing time before they even reach the garden.
Choose an early tomato. For a large-fruited tomato, favor a variety listed at less than 75 days to maturity; confirm the exact figure on its plant sign or seed packet. Tomato maturity listings generally count from transplanting, not from sowing the seed, and cool weather can delay harvest.
Read maturity information as well as the crop name. An early winter squash and a long-season storage squash are not interchangeable in a late-started garden. The later you plant, the more important the variety becomes.
Select sturdy, healthy plants. Avoid choosing a transplant simply because it is the tallest. Compact growth, healthy leaves and a root ball that is not severely crowded give you a better starting point.

Peas, spinach and radishes are less dependable as general June recommendations. They prefer cooler conditions, and summer warmth or long days can shorten their useful harvest period. They may still work in a cool maritime garden, but they should not be the foundation of a hot inland summer planting.

Step 3: Prepare the Bed and Plant

Acclimate indoor-grown starts. Gradually expose them to outdoor sun and wind before planting. Tender plants still need protection from frost; hardening off does not make them frost-tolerant.
Clear the planting area. Remove competing weeds and avoid working soil while it is saturated. Keep paths separate from growing areas so you do not compact the bed while planting.
Sow seeds at the packet’s planting depth. Thin or space bush beans 4–6 inches apart, and pole and runner beans 6–10 inches apart. Install climbing supports at planting time, before roots and vines make the job difficult.
Plant starts without breaking up sensitive roots. Handle cucumber, squash and melon root balls gently. If several seedlings share a pot, avoid pulling their roots apart; plant the root ball intact and snip off weaker seedlings.
Label each planting. Record the crop, variety and planting date so you can distinguish a slow variety from a planting that is genuinely struggling.

Leave enough room for each crop’s mature size. A bed that looks comfortably full on planting day can become overcrowded once squash leaves spread or bean vines climb.

Step 4: Water, Mulch and Finish the Planting

Water immediately after planting. Wet the root ball and surrounding soil thoroughly. Keep seeded areas evenly moist during germination rather than letting the surface repeatedly dry out.
Mulch established starts. Add a 1–2-inch layer of finished compost around warm-season plants, keeping it away from stems. Leave newly seeded rows uncovered until seedlings emerge so the mulch does not obstruct them.
Plan nutrition rather than feeding automatically. Where soil-test results indicate fertilizer is needed, feed at planting and plan a second application 3–6 weeks later for most warm-season vegetables. Adjust the product and amount to the crop and soil-test recommendation; a fertile bed does not need extra fertilizer simply because the calendar says so.
Make weather protection manageable. If you use covers to help tender plants through cool conditions, ventilate or remove them as weather warms. Open or remove covers when insect-pollinated crops begin flowering so pollinators can reach the blossoms.

After planting, check moisture throughout the planting area. A newly planted start can dry out inside its nursery root ball even when nearby garden soil still feels damp.

What to Plant in Late June and for Fall

June planting can provide summer harvests while also establishing the crops you will eat in fall.

Late June is still useful planting time, but the goal shifts toward crops that establish quickly. Bush beans, summer squash and roots are generally practical late additions.

Leafy vegetables can remain useful options in cooler gardens. In hot inland gardens, account for summer heat before sowing lettuce or other cool-season crops into a fully exposed bed.

Make Small Succession Plantings

Succession planting means sowing another small batch after the first, rather than planting your entire supply at once. It spreads the harvest and reduces the chance of ending up with more produce than you can use.

Choose the next sowing based on available space, expected harvest time and your ability to keep it watered. Do not automatically repeat a spring crop if the weather has become unsuitable for it.

Start Fall Crops Before Summer Is Over

Fall vegetables often need to begin growing while the weather still feels like summer. June can be a useful time to start broccoli, cabbage, cauliflower and kale for transplanting later, with the exact timing adjusted to your local planting calendar and variety.

Brussels sprouts deserve particular attention because they need a long growing period. They are not a crop to postpone casually until the end of summer.

Give fall starts a place where you can monitor them closely. Young plants in small containers are vulnerable to drying out during hot weather. Plan their eventual garden space now, such as a bed that will open after an earlier crop is harvested.

Coastal and mild western locations may also support overwintering vegetables, while colder inland gardens need a different harvest and protection plan. “Fall planting” does not mean the same thing in every garden.

Herbs and Flowers to Plant in June

A June garden does not have to be entirely vegetables. Herbs and flowering annuals can fill containers, provide kitchen harvests and support a more diverse garden.

Herbs for Beds and Containers

Basil: Plant starts in a warm, sheltered location after cold weather has passed. It is a better fit beside heat-loving vegetables than in a chilly, shaded corner.
Parsley: Transplants provide a quicker start than seed. It remains useful where conditions are cooler than basil prefers.
Dill: Direct sow where it will grow, allowing space if you want the plants to flower.
Chives: Plant established clumps or nursery starts for an edible perennial addition.
Mint: Use a separate container if you do not want it spreading through the vegetable bed.

For patio growing, choose a container that accommodates the plant’s mature roots and has drainage holes. A small nursery pot is a temporary home, not necessarily a suitable container for the whole summer.

Flowers for a June Garden

Sunflowers and nasturtiums are straightforward direct-sown options once conditions suit them. Marigold and calendula starts can add flowers sooner, while zinnias are better matched to warm, sunny sites.

Choose varieties that fit the space: a tall sunflower and a compact container sunflower have very different footprints. Position large plants so they will not shade the vegetables you selected for your sunniest bed.

If your aim is a native perennial planting rather than quick summer flowers, June requires more attention to establishment water. Do not assume that a drought-tolerant mature plant can tolerate drying out immediately after transplanting.

How to Tell Your June Plantings Are Settling In

Look for establishment, not just survival. A transplant that stays green but produces no new growth may still be struggling with cold, poor root contact or inadequate moisture.

Check for these signs:

Transplants produce new leaves. Some temporary slowing after planting is normal, but continued growth is the useful signal.
Seedlings emerge without becoming crowded. Thin excess plants before competition becomes severe.
Plants recover from afternoon stress. Persistent wilting into cooler conditions needs attention; check root-zone moisture before adding more water.
The location remains sunny enough. Nearby trees and neighboring crops can create more shade as the season progresses.

Keep notes on what you planted and where. That gives you a garden-specific record to improve on, rather than relying entirely on a statewide calendar next year.

Plant the crops best matched to your site now, and put your next sowing and fall-start tasks on the garden calendar.

Frequently Asked Questions

Does Seattle Zone 8b or 9 Change What I Can Plant in June?

Not by itself: a hardiness zone describes average extreme winter cold, not summer warmth or a planting date. A garden still needs crops suited to its summer conditions. Sun exposure, shelter and local frost risk are more useful than the zone number for deciding what to plant in June.

Can I Plant Alyssum Seeds in June in Seattle?

Yes, sweet alyssum can be sown in June in Seattle. Keep the seedbed evenly moist during germination, and press the fine seeds onto the surface rather than burying them deeply. Nursery starts are the better choice if you want flowers sooner.

What Can I Plant in July in Washington State?

July can still work for short-season beans, carrots, beets, chard and suitable fall vegetables, depending on your location and remaining growing season. Cool western gardens may also support lettuce, while hot inland gardens require more attention to heat and seedbed moisture. Use starts for crops that need a head start, and avoid assuming that a long-season summer vegetable will mature simply because the weather is warm.

What can you plant in a Zone 7 eastern Washington garden in June?

You can plant warm-season vegetables such as tomatoes, peppers, eggplant, squash, and beans in June when your garden has suitable conditions. Give most warm-season vegetables at least 6–8 hours of sun each day, and use a ZIP-code planting guide to refine the list for your location.