When to Plant Peas in Washington (2026 Guide)
Peas are a versatile and nutritious crop, ideal for Washington's variable climates. With the median last spring frost in Zone 6b falling on April 9, gardeners can eagerly anticipate the arrival of planting season. This guide will help you determine the best times to plant peas, ensuring a bountiful harvest in your garden.
Understanding frost dates is crucial for success when growing peas. In Zone 6a, for instance, the last spring frost occurs around April 20, while for Zone 5b, it extends to May 6. By knowing your specific zone and its frost calendar, you can optimize your pea planting schedule and avoid cold weather setbacks.
As a cool-season vegetable, peas thrive in the mild temperatures of early spring. Their growth period is short, making it essential for gardeners in Washington to plant them at the right time. This guide will cover various growing zones, planting advice, and common mistakes to ensure your pea planting is both enjoyable and productive.
Planting Schedule by USDA Zone in Washington
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Not recommended — direct sow only | Not recommended — direct sow only | Start March 1 – April 9, ~6–8 weeks before April 10 | Late May – June 10, ~50–60 days after sowing |
| Zone 6a | Not recommended — direct sow only | Not recommended — direct sow only | Start March 15 – April 20, ~6–8 weeks before April 20 | Late May – June 1, ~50–60 days after sowing |
| Zone 5b | Not recommended — direct sow only | Not recommended — direct sow only | Start April 1 – May 6, ~6–8 weeks before May 6 | Late May – June 10, ~50–60 days after sowing |
Peas Planting Windows in Washington
- Indoor start: Not recommended, as peas should be directly sown rather than started indoors to ensure the best growth results.
- Transplant outdoors: Not applicable, since peas should only be direct sown according to their frost-free zone dates.
- Harvest: Harvest peas in late May to early June, approximately 50–60 days after direct sowing, depending on your specific zone and planting date.
Common Mistakes Growing Peas in Washington
- Many gardeners in Washington mistakenly try to start peas indoors, which often ends in poor growth due to transplant shock. Peas do not respond well to being transplanted, so always direct sow them directly in the garden.
- Another common error is planting peas too late. With last frost dates as early as April 9 for Zone 6b, delaying planting can mean missing the ideal cool weather for optimal growth.
- Overlooking soil temperature is a significant mistake. Washington's spring can be unpredictable, and if the soil is too cold (below 40°F), peas won't germinate, which could lead to crop failure for eager gardeners.
- Gardeners in Washington often underestimate the effects of late spring chill. Even if the calendar says it's time to plant, unexpected frosts can still occur. Always check local forecasts for late-season frost warnings.
- Choosing the wrong variety for your gardening zone can lead to disappointment. It’s essential to select pea varieties that align with your specific Washington climate, whether that’s cool coastal weather or the warmer inland areas.
Frequently Asked Questions
What if I'm in a cold pocket of Washington?
If you live in a notably colder area, consider delaying your sowing date until the soil warms adequately. Monitor local weather conditions closely, as microclimates can affect frost dates and soil temperatures.
Can I still plant peas in May?
Planting peas in early May is possible, particularly in Zone 5b, but be cautious of the warm temperatures later in the month. Aim to sow before May 6 to take advantage of cooler conditions.
What should I do if late frost is predicted?
If a late frost is expected after you've sown your peas, consider covering them with floating row covers or cloths to protect the young plants. This can help mitigate damage and ensure they continue to grow after the frost passes.
How often should I harvest my peas?
For optimal flavor and tenderness, harvest snap and snow peas every 2–3 days during peak growing periods. Shelling peas should be checked daily once they start forming to capture them at their best.
Why are my peas not germinating?
Peas fail to germinate primarily due to cold soil temperatures or excessive moisture in the soil. Ensure that you plant peas when soil temperatures are above 40°F for suitable germination.
Keep Learning
City guides in Washington
Other crops in Washington
Typical fall sowing window for Peas in Washington: July 24 – August 14.