What's your question? Ask


Q.Photinia Fungus and Oleander Care

Anonymous added on May 6, 2011 | Answered

I suspect that one of my red-tip photinias has a fungus, as the leaves are turning yellow and curling. I read about pruning off the diseased branches, and my question is: Is there a way to treat the fungus, i. e.  with Sevin? Also, how much water do they need? We are in southern NM where the humidity has been around 16% all year.

About Oleanders–how much should I water these plants? So many pretty oleanders in this town are in areas where I feel they never get watered and I am wondering if I am over-watering mine.

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on May 7, 2011

Photinia is very susceptible to the fungus leafspot, called Entomosporium, that can defoliate photinia plants. Plant photinia in full sun and provide good air circulation. Remove and destroy fallen leaves, prune off diseased twigs. Avoid overhead irrigation. Fungicide sprays (copper-based products) are also generally necessary for this disease, beginning from bud break and applied every ten to fourteen days until all foliage has matured. Mature foliage is no longer susceptible to infection.

As for the Oleander, water when the soil is dry (about an inch weekly). During droughts, water a couple of inches each week. Keep in mind, however, that while the soil may not need much water, the leaves and petals can dry out quickly. Mist the leaves with water (early in the morning) to avoid this, especially after a hot, sunny day.

Was this answer useful?

Log in or sign up to help answer this question.

Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert