When to Plant Aronia in Pend Oreille County, WA
Pend Oreille County, Washington gardeners: here's your May plan
Here's what deserves your attention in Pend Oreille County, Washington this month. Everything below is tailored to Zone 6a and timed around your local frost dates.
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Move aronia from tray to bed
Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.
Aronia (chokeberry) is an extremely hardy native shrub producing astringent dark berries rich in antioxidants. The berries are typically processed into juice, jam, or wine.
Pend Oreille County, Washington is in USDA Zone 6a. The average last spring frost is May 10 and the first fall frost is September 23, giving you a growing season of approximately 136 days.
At an elevation of 3,807 feet, Pend Oreille County receives approximately 13.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Aronia during the growing season. With low rainfall, drip irrigation is essential for growing Aronia successfully. Mulch heavily to conserve soil moisture.
Pend Oreille County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.6
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 Pend Oreille County
How your county's soil matches Aronia's growing requirements.
Soil pH
Your soil pH (5.3–6.6) is within Aronia's preferred range (5.0–7.0).
Soil Texture
The silt loam soil in Pend Oreille County is excellent for Aronia — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Aronia.
Organic Matter
Organic matter is excellent (5.0%) — Aronia will thrive.
How to Plant Aronia
Plant Water Budget
Monthly Watering Guide for Aronia
Aronia needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Aronia Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.8" | 0" | ❄️ Dormant |
| Feb | — | 1.4" | 0" | ❄️ Dormant |
| Mar | — | 1.3" | 0" | ❄️ Dormant |
| Apr | — | 0.9" | 0" | ❄️ Dormant |
| May | 4.3" | 0.8" | 3.5" | 🚿 Regular watering |
| Jun | 4.3" | 0.5" | 3.8" | 🚿 Regular watering |
| Jul | 4.3" | 0.2" | 4.1" | 🚿 Regular watering |
| Aug | 4.3" | 0.2" | 4.1" | 🚿 Regular watering |
| Sep | 4.3" | 0.6" | 3.7" | 🚿 Regular watering |
| Oct | — | 1.3" | 0" | ❄️ Dormant |
| Nov | — | 2.1" | 0" | ❄️ Dormant |
| Dec | — | 1.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Pend Oreille County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Aronia 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.
Aronia Planting Timeline — Pend Oreille County, WA
Aronia Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 31 | May 31 – Jun 14 |
· 48" apart · Rows 72" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
730–1095 days
🧪 Soil pH
Needs 5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 6a
📆 Growing Season
136 days in Pend Oreille County
Growing Tips for Aronia in Pend Oreille County
Direct sow Aronia outdoors after May 10 in Pend Oreille County when soil has warmed and frost danger has passed.
Your 136.0-day growing season in Pend Oreille County is tight for Aronia (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.
Pend Oreille County receives only 13" of rain annually. Aronia needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Plant in full sun for best fruiting. Very adaptable to soil types. Minimal pest and disease problems. Harvest berries in fall when fully black. Suckers can be divided for propagation.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Aronia in Other Locations
Frequently Asked Questions
When should I plant Aronia in Pend Oreille County, WA?
Pend Oreille County is in Zone 6a with an average last frost of May 10. Plan your Aronia planting based on this frost date — see the calendar above for exact timing.
What planting zone is Pend Oreille County, WA?
Pend Oreille County, Washington is in USDA Hardiness Zone 6a. The average last spring frost is May 10 and first fall frost is September 23.
Your Pend Oreille County Garden Planner — Free
A 24-page printable planner built for Pend Oreille County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.