What's your question? Ask

Papaya Trees

Q.Brown Patches On Papaya Fruit

Zone Hawaii Island | kcishek added on September 17, 2022 | Answered

For several years I have had a small number of papaya trees, all in one area. This year I have six trees. Five are first year fruit producers and one has been producing for several years. All, including the older one, were grown from seeds taken from my own fruit. This year all my papayas have brown patches in the skin. The patches appear early in the fruit development. The ripe flesh is largely unaffected, they just look bad. Right now the fruit higher up the tree looks better but I’ll have to wait and see. My web searches have turned up nothing like what I am seeing. It doesn’t look to me like anthracnose but perhaps some other fungus? Or something else all together? One other note: This is the first year I used a fertilizer, a 14-14-14 “smart release” product. Thanks for any ideas.

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on September 20, 2022

That would be Phytophthora blight! Unfortunately, this oomycete will not be killed, easily. In fact, the only way to do so will be to remove the soil from around the trees, exposing roots and letting it all dry out, thoroughly.



Was this answer useful?

Answered on September 20, 2022

Bush Doctor, thank you for your answer. From the link and a paper by the U of Hawaii I don't think it's Phytophthora blight. But from your 2nd link I think it might be herbicide injury. My landscape crew is supposed to stay away from the papayas but sometimes there is a new guy. I know they have sprayed herbicide around there.

I don't know if this site will accept outside links but if so here's one to the U of H paper (PDF) entitled Phytophthora Blight of Papaya:


Thanks again!

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...
Papaya Trees
Join Us - Sign up to get all the latest gardening tips!

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