Tropical Fruit Forum - International Tropical Fruit Growers



Author Topic: Citrus Leaves - White ... stuff?  (Read 1172 times)

Viking Guy

  • Hero Member
  • *****
  • Posts: 601
    • USA, Gulf Shores State Park, 9A
    • View Profile
Citrus Leaves - White ... stuff?
« on: March 04, 2015, 07:09:27 PM »
Need help identifying this white stuff.

I installed citrus on my mother's property awhile back, and she sent me these photos wanting to know what this white stuff is.  No, it's not a web.  It is a Rio Red Grapefruit tree.




-Adam

stormin

  • Member
  • ***
  • Posts: 109
    • USA, St Cloud FL, 9b
    • View Profile
Re: Citrus Leaves - White ... stuff?
« Reply #1 on: March 04, 2015, 07:15:00 PM »
Looks like powdery mildew to me.

Viking Guy

  • Hero Member
  • *****
  • Posts: 601
    • USA, Gulf Shores State Park, 9A
    • View Profile
Re: Citrus Leaves - White ... stuff?
« Reply #2 on: March 04, 2015, 08:54:56 PM »
She says it appeared right after a mild rain.
-Adam

simon_grow

  • Hero Member
  • *****
  • Posts: 4680
  • USA, San Diego, CA, Zone 10a
    • View Profile
Re: Citrus Leaves - White ... stuff?
« Reply #3 on: March 04, 2015, 09:26:41 PM »
looks kinda like residue or hard water to me.  Dried up rain water should be clear.  Do you have sprinklers near by or have you used a foliar spray recently?

Simon

Rtreid

  • Zone 10a Sunset zone 24
  • Sr. Member
  • ****
  • Posts: 423
  • Zone 10a, Sunset 24, CA
    • View Profile
Re: Citrus Leaves - White ... stuff?
« Reply #4 on: March 04, 2015, 10:01:01 PM »
Was that the first rain in a while?  It looks like dust that has washed off the leaves and collected in the upturned leaves that are able to trap water. I see this after a rain with my citrus.


Richard

Viking Guy

  • Hero Member
  • *****
  • Posts: 601
    • USA, Gulf Shores State Park, 9A
    • View Profile
Re: Citrus Leaves - White ... stuff?
« Reply #5 on: March 05, 2015, 12:11:49 AM »
She said she has been without rain for awhile.  Dust and dried foliar spray rinsed down sounds right to me. 
-Adam

 

Copyright © Tropical Fruit Forum - International Tropical Fruit Growers