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Dwarf Mondo Grass

Q.Patches of my dwarf mondo grass are dying. What may be the cause?

Zone 30339 | Anonymous added on September 12, 2020 | Answered

The dead patches have increased in number and size over the past week. They are worst on the west side of the house.

I am in Atlanta GA USA.

Thank you very much for your help.

Ben Weinberg

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on September 13, 2020

If you're sure the damage isn't being caused by slugs or snails, your mondo grass may have a fungus that is causing root rot. Perhaps there are spots where the drainage isn't the best. Pythium splendens is a disease that causes root rot and is common in mondo grass. It's possible to treat the area by adding compost, but it may need a fungicide labeled for a drench application to mondo grass.

This is a link to our article about the general care of mondo grass: https://www.gardeningknowhow.com/ornamental/foliage/mondo-grass/mondo-grass-care.htm

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