Overwintering Seedling Red Maple in Chicago (Zone 5)

A seedling red maple (Acer rubrum) grown from "helicopter" samara in Chicago should overwinter in an unheated garage — not indoors, not fully exposed.

Why Garage Storage

• Native adaptation: Red maple seeds REQUIRE cold stratification (winter) to germinate.
• Pot vulnerability: Container roots freeze solid at 20°F — ground roots don't.
• Garage = buffer: 10-20°F warmer than outside, still cold enough for dormancy.

Spring Planting

• Plant after ground thaws (April).
• Full sun, room for 40-60 foot maturity.
• Water consistently first 2 years.

NC Nursery Practice

In North Carolina, we STRATIFY red maple seeds in REFRIGERATORS to simulate Chicago winters — your seedling got the real thing naturally.

Garage storage respects the tree's evolutionary needs while protecting its vulnerable container roots.