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When to Plant Morning Glory in Saint Helens, Oregon (97051)

Location

Saint Helens, Oregon

ZIP Code

97051

USDA Zone

8b

Last Frost

Sunday, March 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, March 29, 2026

Pro Tip: Sow Morning Glory directly outdoors 2 weeks after your last frost date — it needs warm soil.

🌿 Plant Details

Scientific Name Ipomoea purpurea
Days to Maturity 65 days
Mature Height 72-120"
Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Low to Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 5-10 days

Ready to Plant Morning Glory in Saint Helens?

Get your seeds now so they're ready by Sunday, March 29, 2026.

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Growing Morning Glory in Zone 8b

Morning Glory (Ipomoea purpurea) is a popular garden vegetable. In Saint Helens, Oregon, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, March 29, 2026.

Your average last frost date is Sunday, March 15, 2026. Morning Glory grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.