Caring for Florist Hydrangeas Indoors in Hot Climates

Keeping Gift Hydrangeas Alive Indoors

Florist-grade hydrangeas are often grown as temporary "throw-away" gifts, but with care they can survive as houseplants. They prefer cool temperatures, high humidity, and bright indirect light—conditions that can be tricky in hot, dry climates like Arizona.

Steps to Success

1. Repot into a larger container with rich potting soil amended with Miracid (follow package directions).
2. Light: Provide 8–10 hours of fluorescent light or diffused sunlight daily. A south-facing window with tinted glass may not offer enough intensity.
3. Water: Keep soil evenly moist but not soggy. Water daily if needed.
4. Fertilize: Feed periodically with a fertilizer low in nitrogen (high nitrogen promotes only leaf growth). Miracid works well.
5. Temperature: 75°F indoors is acceptable; avoid frost entirely (hardy only to zone 9).

With patience, your hydrangea may rebloom, though it's a challenge. Enjoy the foliage even if flowers are scarce.