Washington’s eastern regions produce exceptional wines from heat-loving varieties like Cabernet Sauvignon and Merlot. But if you’re looking for the best grapes to grow in washington for your own backyard or small vineyard, you need to consider your specific microclimate and soil type. This guide will walk you through the top grape varieties that thrive in Washington State’s diverse growing conditions, from the arid Columbia Valley to the cooler maritime zones near Puget Sound.
Best Grapes To Grow In Washington
Washington is actually one of the top wine-producing states in the U.S., second only to California. The state’s unique geography—with the Cascade Mountains creating a rain shadow—gives growers a dry, sunny climate perfect for grapes. The key is matching the right grape to the right location. Here are the top varieties that consistently perform well across Washington.
Cabernet Sauvignon
This is the king of red grapes in Washington. It loves the hot, dry summers of the Columbia Valley. Cabernet Sauvignon produces full-bodied wines with dark fruit flavors and firm tannins. It’s a reliable choice for experienced growers.
- Best for: Eastern Washington, especially Red Mountain and Walla Walla
- Soil needs: Well-drained, sandy loam or gravelly soils
- Sun requirement: Full sun, at least 6-8 hours daily
- Harvest time: Late September to October
Merlot
Merlot is a close second in popularity. It ripens earlier than Cabernet Sauvignon, making it a safer bet in cooler sites. Washington Merlots are known for their soft, plush texture and notes of cherry and chocolate.
- Best for: Columbia Valley, Yakima Valley, and Wahluke Slope
- Soil needs: Loam or clay-loam with good drainage
- Sun requirement: Full sun to partial afternoon shade
- Harvest time: Mid-September to early October
Riesling
Washington produces world-class Rieslings, from dry to sweet styles. This grape thrives in cooler sites and is very disease-resistant. It’s a great choice for beginners because it’s forgiving of minor mistakes.
- Best for: Columbia Gorge, Yakima Valley, and Lake Chelan
- Soil needs: Sandy or gravelly soils, prefers slightly acidic pH
- Sun requirement: Full sun but can tolerate some cloud cover
- Harvest time: Late September to November
Syrah
Syrah has become a signature grape for Washington. It produces bold, spicy wines with dark fruit and pepper notes. It handles heat well but also does suprisingly well in cooler areas like the Walla Walla Valley.
- Best for: Red Mountain, Walla Walla, and Yakima Valley
- Soil needs: Well-drained, rocky or sandy soils
- Sun requirement: Full sun, loves heat
- Harvest time: Late September to October
Chardonnay
Chardonnay is the most planted white grape in Washington. It adapts to many different sites and can be made into crisp, unoaked wines or rich, buttery styles. It’s a workhorse variety for home growers.
- Best for: Columbia Valley, Yakima Valley, and Puget Sound
- Soil needs: Deep, fertile loam with good drainage
- Sun requirement: Full sun to partial shade
- Harvest time: September to early October
Climate Zones And Grape Selection
Washington has several distinct growing regions. Each one favors different grape varieties. Understanding your zone is the first step to choosing the best grapes to grow in washington for your property.
Eastern Washington (Columbia Valley)
This is the hot, dry side of the state. Summers are long and sunny, with very little rain. Winter can be cold, but the dry air helps protect vines. This region is ideal for red varieties like Cabernet Sauvignon, Merlot, and Syrah.
- Check your hardiness zone (USDA zones 5-7)
- Choose heat-loving reds for maximum flavor
- Consider irrigation needs—drip systems work best
- Plant on slopes for better air drainage and frost protection
Western Washington (Puget Sound)
West of the Cascades, the climate is cooler and wetter. This area is better suited for cold-hardy and disease-resistant varieties. White grapes like Riesling and Pinot Gris do well here. Some reds like Pinot Noir can work if you have a warm, sheltered site.
- Look for varieties with early ripening times
- Plant on south-facing slopes for maximum sun exposure
- Use trellis systems that improve air flow to reduce disease
- Consider hybrid grapes like Marquette or Frontenac for reliability
Columbia Gorge
This area is a transition zone between the wet west and dry east. It has unique microclimates that allow for a wide range of grapes. Riesling, Pinot Noir, and Syrah all do well here. The key is matching the grape to the specific site.
- Cooler sites: Pinot Noir, Chardonnay, Riesling
- Warmer sites: Syrah, Cabernet Sauvignon, Merlot
- Windy sites: Consider sturdy trellis systems
Soil Preparation And Planting Tips
Good soil preparation is critical for vine health. Washington soils vary from sandy loam to heavy clay. Most grapes prefer well-drained soil with a pH between 5.5 and 7.0. Here’s how to get started.
Testing Your Soil
Before planting, get a soil test. This will tell you pH, nutrient levels, and organic matter content. You can get a test kit from your local extension office. It’s cheap and worth the effort.
- Collect soil samples from several spots in your planting area
- Mix them together in a clean bucket
- Send the sample to a lab or use a home test kit
- Adjust pH with lime (to raise) or sulfur (to lower) as needed
Planting Your Vines
Spring is the best time to plant in Washington. Wait until after the last frost date. Space vines 6-8 feet apart in rows that are 8-10 feet apart. This gives them room to grow and allows for good air circulation.
- Dig a hole twice as wide as the root ball
- Place the vine at the same depth it was in the pot
- Backfill with native soil, don’t add fertilizer at planting
- Water deeply after planting
Watering And Irrigation Strategies
Washington’s eastern regions are dry, so irrigation is essential. Western areas get more rain, but summer droughts still require supplemental water. Drip irrigation is the most efficient method for grapes.
Drip Irrigation Benefits
- Delivers water directly to the roots
- Reduces water waste from evaporation
- Minimizes leaf wetness, which prevents disease
- Allows for precise control of water amounts
Watering Schedule
Young vines need more frequent watering. Established vines can go longer between waterings. The goal is to keep the soil moist but not waterlogged. Overwatering can lead to root rot and poor fruit quality.
- Water young vines every 3-5 days during dry spells
- Water mature vines every 7-10 days
- Reduce watering as harvest approaches to concentrate flavors
- Stop watering completely after leaves drop in fall
Pruning And Training Techniques
Proper pruning is essential for grape production. It controls vine size, improves fruit quality, and prevents disease. Washington growers commonly use two training systems: the VSP (Vertical Shoot Positioning) and the GDC (Geneva Double Curtain).
VSP System
This is the most common system for home vineyards. It keeps the vine canopy upright and narrow. This allows for good sun exposure and air flow. It works well for most wine grape varieties.
- Train the main trunk to a single wire at about 5 feet
- Select two lateral canes each year for fruiting
- Remove all other growth during winter pruning
- Keep the canopy about 18 inches wide
GDC System
This system splits the canopy into two curtains. It increases yield and improves sun exposure for the fruit. It’s best for vigorous varieties like Concord or some hybrids.
- Use a T-shaped trellis with two wires
- Train canes to each side of the T
- Allow shoots to hang down naturally
- Thin fruit clusters to prevent overcropping
Pest And Disease Management
Washington grapes face several pests and diseases. The dry climate helps reduce fungal issues, but powdery mildew can still be a problem. Birds and deer are common pests that love ripe grapes.
Common Diseases
- Powdery mildew: White powder on leaves and fruit. Use sulfur sprays preventatively.
- Downy mildew: Yellow spots on leaves. Improve air circulation and avoid overhead watering.
- Botrytis bunch rot: Gray mold on fruit. Harvest early in wet years and remove infected clusters.
Pest Control
- Birds: Use netting over the vines as fruit ripens
- Deer: Install fencing at least 8 feet tall
- Wasps: Remove fallen fruit and use traps
- Spider mites: Encourage beneficial insects like ladybugs
Harvesting And Storing Your Grapes
Knowing when to harvest is crucial. Grapes don’t ripen after picking, so you need to get the timing right. Taste the fruit regularly as harvest approaches. Look for sweet flavor and soft, plump berries.
Harvest Indicators
- Color: Red grapes should be fully colored, white grapes should be translucent
- Seeds: Brown seeds indicate ripeness
- Stem: The stem should be brown and woody
- Brix: Use a refractometer to measure sugar content (22-26 Brix for wine grapes)
Storage Tips
Fresh grapes can be stored in the refrigerator for up to two weeks. For longer storage, consider making juice, jelly, or wine. Freezing grapes is also an option for later use in cooking or baking.
- Sort grapes and remove any damaged or moldy berries
- Store in a perforated plastic bag in the fridge
- Don’t wash until ready to use
- Freeze in a single layer on a baking sheet, then transfer to bags
Frequently Asked Questions
What Are The Easiest Grapes To Grow In Washington For Beginners?
Riesling and Chardonnay are great choices for beginners. They are disease-resistant and forgiving of minor mistakes. Concord grapes are also very easy to grow if you want a table grape.
Can I Grow Wine Grapes In Western Washington?
Yes, but you need to choose the right varieties. Look for early-ripening, cold-hardy grapes like Pinot Noir, Riesling, and Pinot Gris. Hybrid grapes like Marquette and Frontenac are also excellent choices for the wetter climate.
How Long Does It Take For Grape Vines To Produce Fruit?
Most grape vines will produce a small crop in their third year. Full production usually starts in year four or five. Patience is key—good things take time.
Do I Need To Use Pesticides On My Grapes?
Not necessarily. Many home growers use organic methods like sulfur sprays and beneficial insects. The dry climate in eastern Washington reduces disease pressure. In western Washington, you may need more proactive management for fungal issues.
What Is The Best Trellis System For Washington Grapes?
The VSP (Vertical Shoot Positioning) system is the most popular and effective for wine grapes. It’s simple to build and maintain. For table grapes or high-yield varieties, consider the GDC (Geneva Double Curtain) system.
Growing grapes in Washington is a rewarding experience. The state’s unique climate allows for a wide range of varieties, from world-class Cabernet Sauvignon to crisp Riesling. Start with a soil test, choose the right grape for your site, and be patient. With proper care, you’ll be enjoying homegrown grapes in just a few years. Remember to prune annually, water wisely, and protect your fruit from birds and deer. Whether you’re making wine, juice, or just eating fresh grapes, the best grapes to grow in washington are the ones that match your specific location and goals. Happy growing.