Why Does My Crown of Thorns Have Small or Defective Flowers?

If you are growing Euphorbia milii (Crown of Thorns) and expecting beautiful blooms, it can be disappointing to see the flowers stop developing or appear small and defective. This problem is often caused by Thrips, one of the major pests that attack Crown of Thorns.

How Thrips Affect Euphorbia milii?

When Thrips infest the plant, the damage usually shows up on both flowers and leaves:

1. Flowers may stop blooming properly.

2. Flower Buds may remain small and stop growing.

3. The Leaves may show discoloration or irregular shape.

Unfortunately, once the damage has appeared, the affected flowers will not recover.

What to Do If Your Plant Is Affected?

If you see signs of Thrips on your Crown of Thorns, the best step is to remove the affected flowers. They will not continue growing into normal blooms, so trimming them off helps the plant focus on healthy growth.

How to Prevent Thrips on Crown of Thorns?

Prevention is the key. To protect your Euphorbia milii from Thrips:

Use a suitable insecticide labeled for Thrips, such as Imidacloprid. It usually comes in two forms.
1. The granular type works by being absorbed into the plant.

2. The spray gives faster results if you need immediate control.

Imidacloprid is available in both systemic granular form and spray form.

Please remember to always follow label instructions for safe and effective use.

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