How to Overwinter Geraniums Indoors & Wake Up to Spring Blooms! Don’t let Jack Frost steal your favorite geraniums! With this step-by-step overwintering guide, you can protect your geranium plants all winter long and enjoy bigger plants next season. Here’s exactly what to do: 1️⃣Dig & Inspect – Before the first frost, gently lift plants from the garden. Shake off excess soil and check for pests or rot. 2️⃣ Prune Ruthlessly– Cut back leggy stems to 4-6 inches. Remove yellow leaves and spent bloom