Updated: June 5, 2022

Dusty Miller, also known as Jacobaea maritima or Senecio cineraria, is a popular plant known for its silver-gray foliage. The plant is often used as a decorative item in gardens, borders, and containers. However, despite its hardiness, Dusty Miller plants can succumb to certain diseases and pest infestations. In this article, we will discuss the reasons why your Dusty Miller plant may be dying and what you can do to save it.

Lack of Water

One of the most common reasons why Dusty Miller plants die is due to a lack of water. These plants require regular watering to stay healthy and vibrant. If you notice that your Dusty Miller plant’s leaves are wilting or drooping, it may be a sign that the plant is not getting enough water.

To prevent this from happening, make sure to water your Dusty Miller plant regularly. Water the soil around the base of the plant and avoid getting water on the foliage. You can also add mulch around the plant to help retain moisture in the soil.


While Dusty Miller plants require regular watering, overwatering can be just as harmful. Overwatering can cause the roots to rot and prevent the plant from absorbing essential nutrients. Signs of overwatering include yellowing leaves, soggy soil, and a foul odor emanating from the soil.

To prevent overwatering, make sure to allow the soil to dry out between watering sessions. Check the soil moisture level by inserting your finger into the soil up to about an inch deep. If the soil feels dry, then it’s time to water your plant.


Dusty Miller plants are susceptible to a variety of pests such as spider mites, aphids, and whiteflies. These pests can cause significant damage to the plant, leading to stunted growth and wilting leaves.

To prevent pest infestations, inspect your Dusty Miller plant regularly for signs of pests. You can also use insecticidal soap or neem oil to treat existing pest infestations. Make sure to follow the instructions on the product label for best results.


Dusty Miller plants can also fall prey to various diseases such as root rot, powdery mildew, and rust. These diseases can weaken the plant and cause it to die.

To prevent disease, make sure to plant your Dusty Miller in well-draining soil and avoid overwatering. If you notice signs of disease, such as yellowing leaves or white powdery residue on the foliage, remove the affected parts immediately. You can also use fungicides to treat existing diseases.

Lack of Sunlight

Dusty Miller plants prefer full sun to partial shade. If your plant is not receiving enough sunlight, it may become weak and susceptible to diseases and pest infestations.

To prevent this from happening, make sure to plant your Dusty Miller in a location that receives at least six hours of sunlight per day. You can also use reflective mulch around the base of the plant to increase sunlight exposure.


Can I grow Dusty Miller indoors?

Yes, you can grow Dusty Miller indoors as long as it receives adequate sunlight and is planted in well-draining soil.

How often should I water my Dusty Miller plant?

Water your Dusty Miller plant regularly, allowing the soil to dry out between watering sessions. The frequency of watering will depend on factors such as temperature and humidity levels.

Can I propagate Dusty Miller?

Yes, you can propagate Dusty Miller by taking stem cuttings and rooting them in water or soil. Make sure to keep the soil moist and provide adequate sunlight.

In conclusion, Dusty Miller plants are hardy and easy to care for, but they can still succumb to various diseases and pest infestations. By following the tips outlined in this article, you can keep your Dusty Miller plant healthy and vibrant for years to come.