Updated: October 3, 2022

Dianella is a popular ornamental plant that is widely grown in gardens and landscapes. It is a hardy plant that requires minimal care, but sometimes it can suffer from various problems that cause it to wither and die. If you have a dying Dianella plant in your garden, don’t give up on it just yet. With the right care and attention, you can revive your plant and restore it to its former glory. Here are some tips on how to save a dying Dianella plant.

Identify the Problem

The first step in saving a dying Dianella plant is to identify the problem. There are several reasons why a Dianella plant may be dying, including:

  • Overwatering or underwatering
  • Lack of sunlight
  • Nutrient deficiency
  • Pest infestation
  • Disease

Once you have identified the problem, you can take the necessary steps to address it.

Adjust Watering

One of the most common reasons why Dianella plants die is due to improper watering. Overwatering can lead to root rot, while underwatering can cause the plant to dry out and wither. To save a dying Dianella plant, you need to adjust the watering schedule.

Check the soil moisture level regularly by sticking your finger into the soil. If it feels dry, water your plant thoroughly until water comes out of the drainage holes. Wait until the top inch of soil dries out before watering again.

Provide Adequate Sunlight

Dianella plants require bright, indirect sunlight to thrive. Lack of sunlight can cause the plant to become weak and spindly, making it more susceptible to diseases and pests.

If your plant is not getting enough sunlight, move it to a brighter location or provide supplemental lighting using grow lights. Avoid exposing your plant to direct sunlight, as this can scorch the leaves.

Fertilize Your Plant

Dianella plants require regular fertilization to stay healthy and vibrant. Lack of nutrients can cause the plant to become stunted and weakened, making it more prone to diseases and pests.

Fertilize your plant every 4-6 weeks during the growing season using a balanced fertilizer. Follow the instructions on the package carefully to avoid overfertilizing, which can damage the roots.

Treat Pests and Diseases

Pest infestations and diseases can also cause a Dianella plant to die. Common pests that attack Dianella plants include spider mites, mealybugs, and scale insects. These pests can be treated with insecticidal soap or neem oil.

Diseases that affect Dianella plants include leaf spot, root rot, and powdery mildew. These diseases can be prevented by providing good air circulation around the plant and avoiding overhead watering. If your plant is already infected, use a fungicide to treat the problem.


How often should I water my Dianella plant?

Water your Dianella plant when the top inch of soil feels dry to the touch.

Can I grow Dianella indoors?

Yes, Dianella plants can be grown indoors as long as they receive bright, indirect sunlight.

How do I know if my Dianella plant is getting enough sunlight?

If your Dianella plant is getting enough sunlight, it will have vibrant green foliage and produce flowers. If it is not getting enough sunlight, it will become weak and spindly.

Can I save a Dianella plant that has root rot?

It is possible to save a Dianella plant with root rot, but you need to act quickly. Remove the affected parts of the plant and repot it in fresh, well-draining soil. Reduce watering until the plant recovers.

How do I prevent pest infestations on my Dianella plant?

To prevent pest infestations, keep your Dianella plant healthy by providing adequate sunlight, water, and nutrients. Avoid overcrowding the plant and remove dead or damaged foliage promptly.