When to Plant Rhubarb in Cumberland Center, Maine (04021)

Location

Cumberland Center, Maine

ZIP Code

04021

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, February 28, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Rhubarb seeds indoors 8 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Rheum rhabarbarum

Days to Maturity 365 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-21 days

Ready to Plant Rhubarb in Cumberland Center?

Get your seeds now so they're ready by Saturday, February 28, 2026.

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Other Plants for Cumberland Center

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Growing Rhubarb in Zone 5b

Rhubarb (Rheum rhabarbarum) is a popular garden vegetable. In Cumberland Center, Maine, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 28, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Rhubarb seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.