Winter Care for Dahlia Flowers: Essential Tips for Success

Planting dahlias in winter requires attention to their specific needs. Dahlias thrive in heat and sun, but they have strict temperature limits: chlorophyll stops functioning above 88°F and below 48°F. Temperature fluctuations are stressful, so consistency is key. Night temperatures must be lower than daytime temperatures; deviations disrupt growth and metabolism.

Because light is essential, a shed is unsuitable. Your decomposed cow manure is an excellent fertilizer choice, but ensure the soil is dark, rich, and well-draining. Watering is non-negotiable—dahlias need daily moisture. They may look tough, but they are sensitive to drought.

Termites in the soil are not a threat to dahlias; they do not eat living plant tissue.