When to Plant Plum Tree in North Bonneville, Washington (98639)
Location
North Bonneville, Washington
ZIP Code
98639
USDA Zone
9a
Last Frost
Friday, February 20, 2026
📅 Planting Calendar
Pro Tip: Sow Plum Tree directly outdoors 6 weeks before your last frost date.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Moderate (1 inch/week)
↔️
Spacing
180" apart
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Get your seeds now so they're ready by Friday, January 9, 2026.
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🤝 Good Companions
⚠️ Avoid Planting Near
Other Plants for North Bonneville
Growing Plum Tree in Zone 9a
Plum Tree (Prunus domestica) is a popular garden vegetable. In North Bonneville, Washington, which is in USDA Hardiness Zone 9a, you should direct sow seeds around Friday, January 9, 2026.
Your average last frost date is Friday, February 20, 2026. Plum Tree grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.