Tomato apical stunt viroid (TASVd)

Tomato apical stunt viroid

This viroid stunts the growth of tomato plants. If it came to New Zealand, it could harm our tomato growing industry and reduce your crop of tomatoes at home.

What does it look like?

An infected plant will:

  • have curled and yellow leaves
  • look stunted and unhealthy
  • produce small, deformed, and pale tomatoes.

The symptoms look similar to many other tomato plant problems. You only need to be concerned if all symptoms are present in your tomato plants.

You're more likely to find infected plants in a glasshouse than in your garden.

greenhouse tomato plants with wilted leaves and distended fruit
Tomatoes in a greenhouse infected with TASVd. Image: Education uses EPPO Global database

Global distribution of tomato apical stunt viroid

World map showing TASVd distribution

What you can do

Infected seeds are the most likely source of the viroid. Buy seeds from reputable sellers, like garden centres.

If you find a tomato plant with all the symptoms listed above:

  • photograph it
  • contain it
  • call MPI on 0800 80 99 66
  • wash any tools you used on the plant (the viroid can be spread from tools).

Find out more


Note: This information is a summary of TASVd's global distribution and potential impacts to New Zealand.

Last reviewed:
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