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

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 07-27-2006, 09:58 AM
Newbie
 
Join Date: Jul 2006
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
aileenf is on a distinguished road
Unhappy leaf pitting and black under leaf

Hello,
I am newby and I have a phalaenopsis. I was growing it inside the house and it was getting too much light. The leaves withered, and some turned yellow and fell off. The roots were doing poorly too. It was almost dead, but new roots started to grow and a new nice leaf started to come out. So happy that it was going to survive, I repotted it and put it outside under the shade eastern exposure, so it could have more humidity. Now since about 4 days of being outside the new leaf has small pittings and the underside of the leaf has dark blotches. I noticed that the plant had some knat looking bugs and some ants in the medium a couple of weeks ago, but now I don't see any bugs. Help! What's going on?
Reply With Quote
  #2 (permalink)  
Old 07-27-2006, 01:28 PM
Cynthia, Prescott, AZ's Avatar
Super Moderator Photobucket
PhotobucketPhotobucketPhotobucketPhotobucket
 
Join Date: Nov 2005
Location: Arizona
Posts: 2,682
Thanks: 0
Thanked 239 Times in 32 Posts
Cynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond repute
Sounds like nature is doing its thing. Wild collected plants always look terrible. You may want to bring the plant back in, spray and drench with neem oil, mixed according to label (or repot and spray the whole thing while mixless), and then keep this in a cool and fairly dark place for a day or two. Heat and bright light can make some strange reactions to neem oil. Phalaenopsis are not your usual plant to summer out doors tho some with especialy warm and humid climates do. Phals like people conditions, so putting them outside is not always benificial. You may want to put your location in your profile. Cynthia, Prescott, AZ

Last edited by Cynthia, Prescott, AZ; 07-27-2006 at 01:33 PM.
Reply With Quote
  #3 (permalink)  
Old 07-27-2006, 01:56 PM
love2cee's Avatar
Junior Member
 
Join Date: May 2006
Location: San Francisco Bay area
Posts: 30
Images: 1
Thanks: 0
Thanked 0 Times in 0 Posts
love2cee is on a distinguished road
Neem Oil

Cynthia, I bought some and put some in and on my outdoor Cyms, than No. Cal got 4-days of 100+ degree weather. How will I know if the oil is damaging my plant? And part of the directions say to use dishwashing detergent with it. Do you use dishwashing soap and if so what works well for your orchids??

Thank you
__________________
Happy Growing
Reply With Quote
  #4 (permalink)  
Old 07-28-2006, 12:48 AM
Cynthia, Prescott, AZ's Avatar
Super Moderator Photobucket
PhotobucketPhotobucketPhotobucketPhotobucket
 
Join Date: Nov 2005
Location: Arizona
Posts: 2,682
Thanks: 0
Thanked 239 Times in 32 Posts
Cynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond reputeCynthia, Prescott, AZ has a reputation beyond repute
The version I buy probably has the soap built in. I think the brand name of mine is fertilome, but there are others that have the same mixing instructions. The damage that neem does is to make the chlorophyl (green color) become blotchy. If you had a day between application and the heat, you may be OK. I have heard some say that you just have to let the oil dry. Well, I've seen color changes too often, so I assume more time is needed. Cynthia
Reply With Quote
  #5 (permalink)  
Old 07-28-2006, 07:10 AM
captripppp's Avatar
Junior Member
 
Join Date: Jul 2006
Location: Rotonda Fl
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
captripppp is on a distinguished road
I use neem oil on a regular basis. Neem oil is systemic when used on plants; meaning that when you first use neem oil you should spray once, then aweek later spray again, then spray again in two weeks, then spray once more again in two weeks. After that your plants should have the neem in their system and you should only spray about once every month, or two. Also the reason why they say to add dish soap is because the soap acts as an emulsifier. The soap actual helps the oil stick to, and be absorbed by the plant. Aaron
Reply With Quote
  #6 (permalink)  
Old 07-28-2006, 04:18 PM
love2cee's Avatar
Junior Member
 
Join Date: May 2006
Location: San Francisco Bay area
Posts: 30
Images: 1
Thanks: 0
Thanked 0 Times in 0 Posts
love2cee is on a distinguished road
Well thank you both so much, time to treat again.
__________________
Happy Growing
Reply With Quote
  #7 (permalink)  
Old 07-27-2007, 01:41 PM
Newbie
 
Join Date: Jul 2007
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
rlorek is on a distinguished road
black spots on leaves

I've tried cutting out bad parts but more appeared..tried finding Physan 20 locally but not available. Is there a home remedy for fungus on leaves?
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







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