Surviving the Winter: Overwintering Geraniums Without Soil or Water

Geraniums, like many plants, typically require soil and water to survive but can adopt strategies to endure harsh conditions such as storage in a basement during the winter. This guide provides three effective methods for overwintering geraniums without soil or water, ensuring they survive the cold season and bloom again next spring.

Understanding Dormancy

Dormancy is a state where geraniums significantly reduce their metabolic activity to survive prolonged periods without nutrients or water. This natural process helps the plant endure unfavorable conditions like winter storage.

Storage Techniques

Bare Root Storage

For those with a cool basement, storing geraniums as bare roots can be a viable option. Here’s how to do it:

Wait until the first frost to carefully dig up the geraniums and shake off any soil from the roots. Place the bare roots in unsealed paper bags or hang them upside down in a cool, dry place. A garage or similar location with a temperature around 50°F (10°C) is ideal. Every month or so, remove the geraniums, soak the roots in water for a couple of hours, and allow them to dry before storing again.

Indoor Care as Potted Plants

For a hassle-free solution, overwintering geraniums as indoor potted plants is the way to go:

Before the first frost, carefully dig up your geraniums, pot them in 6-8 inch containers with lightweight potting soil, and water them thoroughly. Place the potted geraniums in a bright, cool spot with temperatures around 60°F (15°C). They should not be in dark or overheated rooms. Over the winter, pinch back new growth to encourage branching. Water only when the soil becomes dry. In spring, fertilize your geraniums and move them back outdoors after the last frost.

Propagating Cuttings

Alternatively, propagating cuttings can create new geranium plants for next season:

Before the first frost, cut healthy stems back by a third to a half and root the cuttings in a propagating medium. Water the cuttings when the soil becomes dry. Once rooted, you can integrate the new plants into your garden or container displays.

Key Survival Tips

Temperature Control: Maintain cool (around 40-50°F or 4-10°C) but not freezing temperatures to prevent deterioration. Humidity and Light: Some moisture in the air and indirect light can help keep the plant tissues hydrated and viable. Minimal Watering: Occasionally misting the roots or leaves can be beneficial, but be cautious to avoid overwatering.

Reviving Geraniums After Winter Storage

To revive overwintered geraniums, simply replant them in soil and reintroduce them to water and light to stimulate growth and encourage healthy, vibrant plants for the upcoming season.

The Popularity of Geraniums

Geraniums are among the most beloved container and garden plants, known for their bright colors and sturdy foliage. However, their expense compared to other summer annuals often deters some plant enthusiasts. Fortunately, with the right methods, geraniums can be easily stored and enjoyed again the following year, allowing gardeners to experience their beauty and resilience repeatedly.