Best Flowers To Grow In Washington

Washington’s maritime climate supports lavender and dahlias with minimal summer watering, making it one of the best places in the Pacific Northwest for flower gardening. If you are looking for the best flowers to grow in washington, you have come to the right place. This guide covers top picks for every region, from the rainy west side to the dry east side.

You do not need a green thumb to succeed here. Many flowers thrive with just a little planning. Let us walk through the top choices, planting tips, and care routines.

Washington state has diverse climates. The west side gets lots of rain, while the east side is drier and sunnier. This means your flower choices depend on where you live. But some flowers grow well across the whole state.

Top Perennials For Washington Gardens

Perennials come back year after year. They save you time and money. Here are the best ones for Washington:

Lavender – Loves dry summers and well-drained soil. Perfect for western Washington.
Dahlias – Bloom from summer to frost. They need full sun and regular watering.
Peonies – Thrive in cold winters and mild summers. They need staking sometimes.
Russian Sage – Drought-tolerant and deer-resistant. Great for eastern Washington.
Black-Eyed Susans – Bright yellow flowers that attract bees. They handle wet soil well.

These perennials are low-maintenance. They adapt to Washington’s unique weather patterns. Plant them in spring or fall for best results.

Best Annuals For Continuous Color

Annuals bloom all season but need replanting each year. They fill gaps in your garden quickly. Try these:

Marigolds – Easy to grow from seed. They repel pests naturally.
Petunias – Love sun and tolerate rain. Great for hanging baskets.
Snapdragons – Bloom in cool weather. Perfect for spring and fall.
Zinnias – Heat-loving and colorful. They attract butterflies.
Cosmos – Drought-tolerant and self-seeding. They grow in poor soil.

Annuals give you instant gratification. You can change your garden look every year. Just water them regularly during dry spells.

Native Flowers That Practically Grow Themselves

Native plants are adapted to Washington’s climate. They need less water and fertilizer. Here are some top natives:

Oregon Grape – Yellow flowers in spring, blue berries in fall. Evergreen leaves.
Red Flowering Currant – Pink blooms attract hummingbirds. Grows in shade.
Western Columbine – Red and yellow flowers. Loves moist soil.
Douglas Aster – Purple daisy-like flowers. Blooms late summer to fall.
Common Camas – Blue star-shaped flowers. Grows in wet meadows.

Native flowers support local wildlife. They also reduce your gardening work. Plant them in groups for a natural look.

Regional Flower Recommendations

Washington has three main gardening zones. Each zone has different conditions. Here is what grows best where you live.

Western Washington (Coastal And Lowlands)

This area gets 30-60 inches of rain per year. Summers are mild and damp. Good choices include:

Hydrangeas – Love acidic soil and partial shade. Big blooms in blue or pink.
Fuchsias – Perfect for hanging baskets. They attract hummingbirds.
Hellebores – Bloom in winter. Evergreen leaves add year-round interest.
Japanese Iris – Thrive in wet soil. Beautiful purple flowers.
Bleeding Hearts – Shade-loving perennials. Heart-shaped pink flowers.

Western Washington gardens need good drainage. Raised beds help with heavy clay soil. Mulch to retain moisture in summer.

Eastern Washington (Dry And Sunny)

This region gets only 10-20 inches of rain per year. Summers are hot and dry. Best flowers include:

Yarrow – Drought-tolerant and deer-resistant. Flat-topped flower clusters.
Blanket Flower – Red and yellow daisies. Blooms all summer.
Penstemon – Tubular flowers attract bees. Needs full sun.
Sedum – Succulent leaves store water. Late summer blooms.
Purple Coneflower – Tough and long-blooming. Loved by butterflies.

Eastern Washington gardens need drip irrigation. Water deeply but infrequently. Add compost to improve soil water retention.

Mountain And High Elevation Areas

These areas have short growing seasons and cold winters. Frost can occur even in summer. Try these:

Alpine Aster – Low-growing and hardy. Blue flowers in summer.
Mountain Lupine – Purple spikes that fix nitrogen. Grows in poor soil.
Rock Cress – Mat-forming ground cover. Pink or white flowers.
Globeflower – Yellow buttercup-like blooms. Loves moist soil.
Pasque Flower – Early spring bloomer. Fuzzy seed heads.

Mountain gardens need wind protection. Use rocks and mulch to moderate soil temperature. Start seeds indoors to extend the season.

Step-By-Step Guide To Planting Flowers In Washington

Follow these steps for a successful flower garden. Timing and soil preparation matter most.

Test your soil – Washington soil is often acidic. Add lime if pH is below 6.0.
Choose the right location – Most flowers need 6+ hours of sun daily.
Prepare the bed – Remove weeds and rocks. Mix in 2-3 inches of compost.
Plant at the right depth – Seeds should be twice as deep as their size. Transplants go at the same depth as their pot.
Water thoroughly – New plants need consistent moisture for the first few weeks.
Mulch around plants – Use bark or straw to keep soil cool and moist.
Fertilize sparingly – Too much nitrogen causes leaves but no flowers. Use a balanced fertilizer.

Washington’s growing season runs from April to October. Plant cool-season flowers like pansies in early spring. Warm-season flowers like zinnias go in after the last frost, usually mid-May.

Seasonal Care Tips For Washington Flowers

Each season brings different tasks. Here is what to do throughout the year.

Spring

Remove winter mulch gradually
Divide overgrown perennials
Start seeds indoors for warm-season flowers
Plant cool-season annuals like pansies and violas
Apply a slow-release fertilizer

Summer

Water deeply once a week if no rain
Deadhead spent blooms to encourage more flowers
Watch for slugs and snails in wet areas
Stake tall flowers like delphiniums
Harvest seeds from annuals for next year

Fall

Cut back dead foliage after frost
Plant spring-blooming bulbs like tulips and daffodils
Add a layer of compost or manure
Protect tender perennials with mulch
Clean up diseased plant material

Winter

Water evergreens during dry spells
Check for frost heaving and press plants back down
Plan next year’s garden layout
Order seeds from catalogs
Prune dormant shrubs and trees

Washington winters are mild in lowlands but harsh in mountains. Adjust your care based on your microclimate. Container plants need more winter protection than in-ground ones.

Common Flower Growing Problems In Washington

Even experienced gardeners face challenges. Here are solutions to common issues.

Too Much Rain

Western Washington gets heavy rain in spring and fall. This can cause root rot and fungal diseases. Solutions:

Plant in raised beds or mounds
Improve drainage with sand or perlite
Space plants for good air circulation
Use copper fungicide for powdery mildew
Choose rain-tolerant varieties like astilbe and ligularia

Slugs And Snails

These pests love damp Washington gardens. They eat leaves and flowers overnight. Control methods:

Hand-pick them at dusk
Set up beer traps or copper tape barriers
Encourage natural predators like frogs and birds
Use iron phosphate bait (safe for pets)
Remove hiding spots like boards and debris

Poor Soil

Many Washington soils are heavy clay or sandy. Neither is ideal for flowers. Improve your soil:

Add organic matter like compost or aged manure
Use gypsum to break up clay
Plant green manure crops like clover in fall
Test pH and adjust as needed
Mulch to protect soil structure

Short Growing Season

High elevation areas have only 90-120 frost-free days. Maximize your season:

Start seeds indoors 6-8 weeks before last frost
Use row covers or cold frames
Choose fast-maturing varieties
Plant in south-facing spots for extra warmth
Use black plastic to warm soil early

Flower Combinations That Work Well Together

Pairing flowers creates visual impact. Here are some winning combinations for Washington gardens.

Sunny Border Combo

Purple coneflower (tall, purple)
Black-eyed Susan (medium, yellow)
Russian sage (tall, blue)
Sedum ‘Autumn Joy’ (low, pink)
Ornamental grass (texture)

This combo blooms from July to October. It attracts bees and butterflies. All plants are drought-tolerant once established.

Shade Garden Combo

Hosta (large leaves, white flowers)
Bleeding heart (pink, heart-shaped)
Fern (texture, green)
Astilbe (plumes in pink or white)
Heuchera (colorful leaves)

This combo thrives in dappled shade. It provides interest from spring to fall. Hostas and ferns are slug-resistant if you choose tough varieties.

Cutting Garden Combo

Dahlia (large blooms, many colors)
Zinnia (bright, long stems)
Snapdragon (tall spikes)
Cosmos (airy, delicate)
Sunflower (tall, cheerful)

This combo gives you fresh flowers for bouquets. Plant in rows for easy harvesting. Deadhead regularly to keep blooms coming.

Frequently Asked Questions

What are the best flowers to grow in washington for beginners?

Start with marigolds, zinnias, and sunflowers. They are forgiving and grow quickly. Lavender and black-eyed Susans are also easy perennials for beginners.

Can I grow roses in Washington?

Yes, but choose disease-resistant varieties. Rugosa roses do well in coastal areas. Knock Out roses are low-maintenance and bloom all summer.

When should I plant flowers in Washington?

Plant cool-season flowers in March or April. Warm-season flowers go in after the last frost, usually mid-May. Fall planting works for perennials and bulbs.

What flowers grow best in shade in Washington?

Hellebores, hostas, ferns, astilbe, and bleeding hearts all thrive in shade. They need moist, well-drained soil. Add compost to improve growing conditions.

How do I protect flowers from Washington rain?

Use raised beds for drainage. Space plants for air flow. Apply fungicide preventively. Choose rain-tolerant species like iris, ligularia, and Japanese primrose.

Growing flowers in Washington is rewarding. The climate supports a wide variety of plants. Start with the flowers that match your region and skill level. With proper care, your garden will bloom from spring to fall.

Remember to water deeply but infrequently. Mulch to conserve moisture and suppress weeds. Deadhead regularly for continuous blooms. And most importantly, enjoy the process. Gardening is about learning and experimenting.

Washington’s flower gardens are some of the most beautiful in the country. Whether you grow lavender on the coast or zinnias in the east, you will have success. The key is choosing the right plants for your specific location. Use this guide as your starting point, and adjust based on your own experience.

Happy gardening in the Evergreen State. Your flowers will thank you for the care you put into them. And you will have a colorful, thriving garden that brings joy all season long.