How to Make Kalanchoe Rebloom: Light Cycles & Rest Periods

Got a kalanchoe that bloomed once and stopped? You can trick it into flowering again by manipulating light and temperature—essentially simulating winter.

Understanding the Bloom Cycle

Nurseries force kalanchoes into bloom for sale using controlled conditions. Naturally, they flower in late winter to spring. After flowering, they need a rest period to rebuild energy.

Step-by-Step Reblooming

Post-Bloom (Summer)

Cut off spent flowers. Keep the plant in well-drained soil, bright light, and moderate moisture.

Fall: Initiate Rest

Reduce watering. Move indoors if frost threatens. The shortening days often naturally trigger bud formation.

Late Winter: Fertilize for Flowers

Apply a 0-10-10 (high phosphorus, no nitrogen) fertilizer as buds form to boost bloom quality.

Forcing Blooms on Schedule (e.g., Christmas)

1. 6 weeks before desired bloom: Start 14 hours of total darkness daily (closet or box).
2. Provide 10 hours of bright light.
3. Keep warm, draft-free. No water or fertilizer during this "dormancy."
4. When buds appear: Move to bright light, resume watering.
5. Spring: Fertilize and deadhead to encourage more buds.

Kalanchoes are forgiving—follow the light/dark regimen, and you'll enjoy up to 6 months of colorful blooms.