Go Back   Orchid Forum Orchid Care > Orchid Care > Orchid Pests and Diseases

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 02-05-2007, 03:31 PM
Junior Member
 
Join Date: Dec 2006
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Sherrie is on a distinguished road
Black spots on phal

Can anyone tell me what black spots on the back of leaves is caused from. I am a newbie and don't want to lose these. Thanks if you can help.
Reply With Quote
  #2 (permalink)  
Old 02-05-2007, 04:24 PM
Ellen's Avatar
Member Photobucket
 
Join Date: Mar 2006
Location: Seattle, WA
Posts: 445
Images: 6
Thanks: 0
Thanked 3 Times in 3 Posts
Ellen is on a distinguished road
A photo of the spots would help.
Reply With Quote
  #3 (permalink)  
Old 02-05-2007, 06:26 PM
Member
 
Join Date: Jun 2006
Posts: 88
Thanks: 0
Thanked 1 Time in 1 Post
Willc73 is on a distinguished road
Several things can cause that. A picture would help a lot. First see if they come off or not. You don't want to freak out about dirt.
When I get a mite infestation, that usually causes black spots on the bottom of Phal leaves. You do want to control that if that is what it is, Mites can take down a collection in no time. A good thing to invest in is some Enstar and Tetrasan. These are two pesticides that are the safest and most effective. Tetrasan is also an Ovacide so you won't have outbreaks later if used correctly. As far as safety, these products are 20 times safer and more environmentally friendly then anything you will find in the local store , including rose spray or mild pesticides. It is expensive stuff, but worth it.
Your black spots may also be a fungus infection, or other possible issues. If the spots start to come through the top of the leaves, be careful.
Ants will also harvest mites and scale, so be aware of any ant problems.
Reply With Quote
  #4 (permalink)  
Old 02-05-2007, 07:11 PM
Junior Member
 
Join Date: Dec 2006
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Sherrie is on a distinguished road
Thank you guys. I am working on pictures. I bought all of these orchids at Meijers. 2 or 3 are affected. One has the black spot that does go thru. The Tetrasan and Enstar..where do you find it? Also can you treat the leaves if they do not need it? I am so new at this but I don't want to loose all of these. I have 11 orchids now because I love them so much and I love and appreciate this site greatly. I will work on the pictures. Thanks so much!!!!
Reply With Quote
  #5 (permalink)  
Old 02-05-2007, 08:35 PM
Member
 
Join Date: Jun 2006
Posts: 88
Thanks: 0
Thanked 1 Time in 1 Post
Willc73 is on a distinguished road
You would need to treat all the plants if it is mites. You can purchase at hummert.
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Phal. has evil black spots on leaves...Help! lmgarret Newbie Questions 1 01-30-2007 01:13 AM
Black spots on Oncidium mstlindsay Orchid Pests and Diseases 5 11-19-2006 02:58 PM
help! my phal is not happy and I'm new to orchids inesita25 Newbie Questions 5 07-09-2006 08:08 PM
Yellow spots on Phal leaves! Lori Ferens Newbie Questions 3 04-26-2006 08:33 PM






Free Vote Caster from Bravenet.com Free Vote Caster from Bravenet.com


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0
Orchid Forum

vBskin developed by: CreationLab