Kalanchoe plants are popular for their vibrant, long-lasting flowers and succulent characteristics, making them relatively low-maintenance. Providing correct light exposure is important for their overall health and abundant blooms.
Kalanchoe’s Ideal Light Conditions
Kalanchoe plants generally thrive in bright, indirect sunlight. They prefer locations with plenty of light but without the harsh intensity of direct sun, especially during the hottest parts of the day. For indoor Kalanchoe, an east-facing window is ideal, providing gentle morning sun that encourages growth without scorching the leaves.
South or west-facing windows can also work well, but filter the light with sheer curtains to prevent overexposure. Outdoors, Kalanchoe can tolerate full sun, but often benefits from partial shade, particularly in climates with intense afternoon sun. Dappled light, such as that found under a tree, provides suitable conditions.
The specific light intensity a Kalanchoe can handle depends on its geographic location and the season. In milder sun, Kalanchoe might tolerate more direct light. In hotter climates, protection from midday and afternoon sun is more important. During winter, when natural light is less intense, Kalanchoe plants can often tolerate more direct indoor sunlight.
Identifying Light Stress in Kalanchoe
Recognizing the visual signals a Kalanchoe plant sends when it is not receiving appropriate light is important for its health. These signs indicate either too much or too little light exposure.
Excessive direct sunlight, particularly intense afternoon sun, can cause sunburn. Symptoms include scorched or bleached leaves, which may turn white, yellow, or brown. Leaf edges might become dry and crispy, and growth may appear stunted. Some Kalanchoe varieties may also develop red or purple discoloration on their leaves as a protective mechanism.
Conversely, a Kalanchoe not receiving enough light will display different signs of stress. One common indicator is leggy growth, where stems become elongated and stretched, with leaves spaced far apart. Leaves may also appear paler green than usual, and the plant might exhibit an overall weak or sparse appearance. A significant sign of insufficient light is a lack of flowering or the production of small, sparse blooms.
Practical Tips for Kalanchoe Light Management
Effective light management involves thoughtful placement and occasional adjustments to ensure Kalanchoe plants receive optimal exposure. For indoor Kalanchoe, strategic placement near windows is important. An east-facing window generally provides soft morning sun, which is beneficial. South or west-facing windows can offer ample light, but using sheer curtains can help diffuse intense midday or afternoon rays, preventing leaf scorch.
When growing Kalanchoe outdoors, select a location that provides morning sun followed by afternoon shade or dappled light. This protects the plant from the most intense sunlight during the hottest parts of the day. If moving a Kalanchoe to a new spot with significantly different light, gradual acclimatization is important. Slowly introduce the plant to the new light conditions over a week or two to prevent shock and stress.
Seasonal changes influence light intensity and duration, so adjusting the plant’s position throughout the year can be helpful. Kalanchoe plants can typically tolerate more direct light during the shorter, less intense days of winter. Regularly rotating the plant, perhaps weekly, ensures all sides receive even light exposure, promoting balanced growth. If natural light is insufficient, full-spectrum grow lights can supplement, typically placed 6 to 12 inches above the plant for 12 to 16 hours daily.