Overwintering Boston Ferns: Indoor Care & Dormant Storage

Two Overwintering Strategies

Option 1: Keep as a Houseplant

Requires cool nights (55–65°F / 13–18°C), bright indirect light (south window unobstructed), daytime temps below 75°F (24°C), and high humidity. In hot, dry homes, this often fails.

Option 2: Induce Dormancy (Easier)

Store in a garage, basement, or unheated building where temps stay above 55°F (13°C). No light needed. Water once monthly—just enough to prevent tuber shriveling.

Preparation Steps (Both Methods)

• Prune off all but newly emerged fronds to reduce mess.
• Acclimate gradually—don't move abruptly.
• Stop fertilizing. Resume when new shoots appear in spring.
• Use rainwater or non-chlorinated water.

Outdoor Overwintering (Zones 8b–11)

In frost-free areas, ferns can stay outside with minimal protection.

Spring Revival

Move outdoors gradually after frost danger passes. Water well, fertilize, and expect lush regrowth by year two.

Overwintering saves money and preserves mature specimens.