Ideal Temperature for Kalanchoe
Signs of Cold Stress in Kalanchoe
Symptoms
Kalanchoe flourishes in warm conditions and cannot withstand cold. Optimal growth occurs when temperatures exceed 65℉. In winter, maintain temperatures above 55℉. If temperatures drop below 40℉, the plant may weaken, droop, and be susceptible to root decay. Minor frost damage might not show immediate signs, but the plant will progressively decline after about a week.
Solutions
Remove any frost-damaged sections, checking for root rot. If roots are rotted, excise them, and the plant can be propagated via cuttings. Relocate the plant indoors to a warm spot immediately, positioning it near a south-facing window for ample light. If natural light is insufficient, provide artificial illumination.
Signs of Heat Stress in Kalanchoe
Symptoms
In summer, Kalanchoe should be kept below 75℉. When temperatures surpass 85℉, the plant's development will halt, it will dehydrate, wilt, and be more prone to sun damage.
Solutions
Discard any sunburnt or decayed portions. Protect the plant from direct afternoon sun until it recuperates and resumes growth. For plants with root rot, cease irrigation until new roots start to form.
