When to Plant Snap Peas in Wasco County, OR
May to-do list for Wasco County, Oregon
May is a pivotal month for Wasco County, Oregon gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Get snap peas in the ground
Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.
To set up a strong June, finish these tasks
- Starting indoors: snap peas
Snap peas have edible pods with plump, sweet peas inside, combining the best features of snow peas and garden peas. They are a garden favorite for fresh eating.
Wasco County, Oregon is in USDA Zone 7a. The average last spring frost is April 23 and the first fall frost is October 12, giving you a growing season of approximately 172 days.
At an elevation of 432 feet, Wasco County receives approximately 35.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Snap Peas to ensure they mature before fall.
Wasco County Soil Profile
Soil Type
Silt Loam
Soil pH
5.2-6.3
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Soil Compatibility in Wasco County
How your county's soil matches Snap Peas's growing requirements.
Soil pH
Your soil pH (5.2–6.3) is more acidic than Snap Peas prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Wasco County is excellent for Snap Peas — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is excellent (5.2%) — Snap Peas will thrive.
How to Plant Snap Peas
Succession Planting Snap Peas
Sow every 6.3 weeks. Last sowing by Aug 03 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Snap Peas
Snap Peas needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Snap Peas Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.3" | 0" | ❄️ Dormant |
| Feb | — | 4" | 0" | ❄️ Dormant |
| Mar | — | 4" | 0" | ❄️ Dormant |
| Apr | 3" | 2.6" | 0.4" | 💧 Light watering |
| May | 3" | 2.1" | 0.9" | 💧 Light watering |
| Jun | 3" | 1.5" | 1.5" | 🚿 Regular watering |
| Jul | 3" | 0.6" | 2.4" | 🚿 Regular watering |
| Aug | 3" | 0.7" | 2.3" | 🚿 Regular watering |
| Sep | 3" | 1.5" | 1.5" | 🚿 Regular watering |
| Oct | 3" | 3.4" | 0" | ✅ Rainfall sufficient |
| Nov | — | 5.1" | 0" | ❄️ Dormant |
| Dec | — | 5.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Wasco County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Snap Peas Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Snap Peas Planting Timeline — Wasco County, OR
Snap Peas Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 5 | Mar 5 – Mar 19 |
| Transplant Outdoors | May 7 | May 7 – May 21 |
| Direct Sow | April 30 | Apr 30 – May 21 |
| Harvest | July 2 | Jul 2 – Aug 27 |
Plant 1" deep · 4" apart · Rows 18" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
55–70 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 7a
📆 Growing Season
172 days in Wasco County
Growing Tips for Snap Peas in Wasco County
Direct sow Snap Peas outdoors after April 23 in Wasco County when soil has warmed and frost danger has passed.
Common pests for Snap Peas in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in early spring as soon as soil can be worked. Provide a trellis 4-6 feet tall. Harvest when pods are plump and snap cleanly when bent.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Snap Peas in Other Locations
Frequently Asked Questions
When should I plant Snap Peas in Wasco County, OR?
Wasco County is in Zone 7a with an average last frost of April 23. Plan your Snap Peas planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wasco County, OR?
Wasco County, Oregon is in USDA Hardiness Zone 7a. The average last spring frost is April 23 and first fall frost is October 12.
Your Wasco County Garden Planner — Free
A 24-page printable planner built for Wasco County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.