Lack of Sunlight
One of the main reasons a Kalanchoe plant looks leggy and is growing too tall is because it is not receiving enough sunlight to encourage healthy growth. This process is known as “etiolation”. This is a common issue with indoor Kalanchoe plants and other succulents. The Kalanchoe plant will begin reaching towards the sunlight, becoming leggy-looking and a bit scraggly.
Move the Kalanchoe plant to a spot with more natural light so it no longer feels the need to stretch towards the sunlight. This can help produce healthier buds and blooms, resulting in the plant looking ‘fuller’.
If your Kalanchoe is looking leggy but is getting plenty of sunlight, then the leggy look could be caused by too many dead flowers. Dead flower branches still attached to the Kalanchoe plant can cause the plant to stop growing in a healthy way. Prune the Kalanchoe plant from the crown down, removing dead leaves, flowers, and branches. This allows the plant to focus its energy on healthy new growth.
When your Kalanchoe plant is looking a bit leggy, check its soil for moisture. Every few days test the soil with your finger, when the soil has dried 100% you can give it more water. Overwatering can cause root rot, and underwatering can cause wilting, both of which affect healthy growth.