Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Page 1 of 2 12 LastLast
Results 1 to 10 of 18

New growth of Psychopsis Kalihi died

This is a discussion on New growth of Psychopsis Kalihi died within the General Orchid Culture forums, part of the Orchid Culture category; Hi, everyone, I am growing a Psychopsis Kalihi which is flowering again. While it is ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    zhilin is offline Junior Member
    My Grow Area
    On a Windowsill.
    Join Date
    Jun 2010
    Location
    San Diego, California
    Posts
    26

    Default New growth of Psychopsis Kalihi died

    Hi, everyone,

    I am growing a Psychopsis Kalihi which is flowering again. While it is flowering, it puts out a new growth with 2 inch tall. But recently I found the new growth died (the little leaves of the new growth turned yellow and dried). Several months ago it also put out a new growth and that growth also died.

    Can anybody tell me what is the reason?

    Thanks,
    Zhilin

  2. #2
    catttan's Avatar
    catttan is offline Senior Member
    Real Name
    Yew-Sung
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    cattleyas, vandaceous,paphios
    Join Date
    Sep 2009
    Gender
    Male
    Location
    Kedah, Peninsular Malaysia
    Posts
    15,880
    Member's Country Flag

    Default

    I suspect red spider mites which seem to have a liking for the thick leaves of 'mule-eared oncidiums' ; Trichocentum and Psychopsis, and can cause drying-off of the young immature leaves : at least here in Malaysia where it is a real problem. Don't know about the conditions in CA.

  3. #3
    zhilin is offline Junior Member
    My Grow Area
    On a Windowsill.
    Join Date
    Jun 2010
    Location
    San Diego, California
    Posts
    26

    Default

    Thanks for your quick reply. What methods do you use to kill the spider mites? Is Neem Oil effective to kill them?

  4. #4
    catttan's Avatar
    catttan is offline Senior Member
    Real Name
    Yew-Sung
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    cattleyas, vandaceous,paphios
    Join Date
    Sep 2009
    Gender
    Male
    Location
    Kedah, Peninsular Malaysia
    Posts
    15,880
    Member's Country Flag

    Red face

    Quote Originally Posted by zhilin View Post
    Thanks for your quick reply. What methods do you use to kill the spider mites? Is Neem Oil effective to kill them?
    Never tried neem oil , so can't give you an answer.. For me, my all-purpose insecticide is malathion, which seems to take care of all my bug problems. I understand that CA has very strict laws regarding pesticides.When using malathion I take all the necessary precautions. Actually I spray only once or twice a year and that seems to be enough.

    Your problem might not even be mite related. Hopefully others more familiar with growing conditions in CA will chip in to help.

  5. #5
    zhilin is offline Junior Member
    My Grow Area
    On a Windowsill.
    Join Date
    Jun 2010
    Location
    San Diego, California
    Posts
    26

    Default

    Thanks. Just another question: can underwater result in this phenomenon?

  6. #6
    Cjcorner's Avatar
    Cjcorner is offline Senior Member
    Real Name
    Connie
    My Grow Area
    Porch/Patio.
    Favorite Orchid(s)
    Mini Vanda, Schombs &Encyclia.
    Join Date
    Mar 2007
    Location
    West of Tampa, FL
    Posts
    9,139
    Member's Country Flag

    Default

    Yes, underwatering is often when you find spider mites. If you have alot of webbing in the pot, or you think it may be pretty infested; a good idea would be to repot. I use some rubbing alcohol, murphys oil soap (like for wood floors, it's organic) and for a bad case I add my run of the mill orchid bug stuff, neem oil will work just make sure to keep plants in a shaded area for several days after treating. The oil needs time to evaporate or direct sunlight will "cook" your leaves. I like to completely dunk my plant, followed by hanging them upside down with a fan or good breeze blowing on them to speed drying. If the plants do not dry soon enough after dunking you can get rot.

  7. #7
    zhilin is offline Junior Member
    My Grow Area
    On a Windowsill.
    Join Date
    Jun 2010
    Location
    San Diego, California
    Posts
    26

    Default

    Thanks, Cjcorner.

    Quote Originally Posted by Cjcorner View Post
    Yes, underwatering is often when you find spider mites. If you have alot of webbing in the pot, or you think it may be pretty infested; a good idea would be to repot. I use some rubbing alcohol, murphys oil soap (like for wood floors, it's organic) and for a bad case I add my run of the mill orchid bug stuff, neem oil will work just make sure to keep plants in a shaded area for several days after treating. The oil needs time to evaporate or direct sunlight will "cook" your leaves. I like to completely dunk my plant, followed by hanging them upside down with a fan or good breeze blowing on them to speed drying. If the plants do not dry soon enough after dunking you can get rot.

  8. #8
    kjones1957's Avatar
    kjones1957 is offline Junior Member
    Real Name
    Karen Jones
    My Grow Area
    On a Porch/Patio.
    Favorite Orchid(s)
    Cattleya
    Join Date
    Apr 2010
    Location
    Virginia Beach, Virginia
    Posts
    27
    Member's Country Flag

    Default

    Have you checked the condition of the roots? What kind of medium is it growing in? How much light is it getting and how often do you water it? I am by no means an expert, but I will tell you what works for me. It is hard to tell if a psychopsis is getting the right amount of light because the foliage is much darker than most orchids. They can take cattleya type conditions and like eastern morning light with good air flow (fan blowing indirectly near them). They can be picky about water, so I put mine in a mix or coir, fir bark, charcoal and pearlite over a layer of lava rocks in a clay orchid pot. Water doesn't stand in this type of mix. As a matter of fact, it drains and dries super fast. I water mine every other day until the medium is wet and the clay turns dark. A psychopsis will get wavy or crinkled leaves if it is not getting enough water. When you check the roots, they should be firm and white, not dark or mushy. If they are dark and mushy, be severe about trimming them back. I repotted and trimmed the roots of my psychopsis while it was in bloom and it did just fine. Just be careful not to damage the spike. If you have to repot, soak the medium you are going to use overnight in warm water with a drop or two of Superthrive in it. Use a pot clip to hold the plant in place until it establishes itself in the new medium and stake the spike for support. It takes several weeks to a month or more to see new root growth. I alternate feedings with 1/4 strength MaxSea one week and 1/2 strength Fox Farm or Terracycle worm tea/bat guano fertilizer the next week. Using this, my psychopsis is thriving and it has constant blooms and two new growths that are four to six inches in height.

    If spider mites are the cause of your problem and treating for them takes care of it, great. If not, hopefully some of the information I have provided will help.

    Good luck with it!

  9. #9
    zhilin is offline Junior Member
    My Grow Area
    On a Windowsill.
    Join Date
    Jun 2010
    Location
    San Diego, California
    Posts
    26

    Default

    Thank you very much for the information. I am pretty new to orchids. So I still have some questions. How do you check the roots? Do you dig it out of the pot to check roots? Or observe from the hole of the pot bottom? When the new growth appeared, there was also a spike. Now the new growth died, but the spike still grows. Do you think the new growth's death is because the spike needs more nutrition so the orchid has to "kill" the new growth?

    Thanks again.
    Zhilin



    Quote Originally Posted by kjones1957 View Post
    Have you checked the condition of the roots? What kind of medium is it growing in? How much light is it getting and how often do you water it? I am by no means an expert, but I will tell you what works for me. It is hard to tell if a psychopsis is getting the right amount of light because the foliage is much darker than most orchids. They can take cattleya type conditions and like eastern morning light with good air flow (fan blowing indirectly near them). They can be picky about water, so I put mine in a mix or coir, fir bark, charcoal and pearlite over a layer of lava rocks in a clay orchid pot. Water doesn't stand in this type of mix. As a matter of fact, it drains and dries super fast. I water mine every other day until the medium is wet and the clay turns dark. A psychopsis will get wavy or crinkled leaves if it is not getting enough water. When you check the roots, they should be firm and white, not dark or mushy. If they are dark and mushy, be severe about trimming them back. I repotted and trimmed the roots of my psychopsis while it was in bloom and it did just fine. Just be careful not to damage the spike. If you have to repot, soak the medium you are going to use overnight in warm water with a drop or two of Superthrive in it. Use a pot clip to hold the plant in place until it establishes itself in the new medium and stake the spike for support. It takes several weeks to a month or more to see new root growth. I alternate feedings with 1/4 strength MaxSea one week and 1/2 strength Fox Farm or Terracycle worm tea/bat guano fertilizer the next week. Using this, my psychopsis is thriving and it has constant blooms and two new growths that are four to six inches in height.

    If spider mites are the cause of your problem and treating for them takes care of it, great. If not, hopefully some of the information I have provided will help.

    Good luck with it!

  10. #10
    kjones1957's Avatar
    kjones1957 is offline Junior Member
    Real Name
    Karen Jones
    My Grow Area
    On a Porch/Patio.
    Favorite Orchid(s)
    Cattleya
    Join Date
    Apr 2010
    Location
    Virginia Beach, Virginia
    Posts
    27
    Member's Country Flag

    Default

    Yes, you have to remove the plant from the medium it is in to check the condition of the roots. Gently remove all medium that is clinging to or caught up in the roots. Rinse the roots under tepid water. Then inspect them.
    When you say there is a spike, are you talking about the established spike that is flowering or something else?
    There are many reasons why an orchid could abort new growth. It would really help if you posted a photo of the plant.

Page 1 of 2 12 LastLast

Similar Threads

  1. New from New Jersey and my Onc Kalihi needs help!
    By dordeb in forum General Orchid Culture
    Replies: 16
    Last Post: July 1st, 2009, 09:55 AM
  2. Oncidium_ Kalihi Big
    By Dallasgarden in forum Genus Specific
    Replies: 7
    Last Post: July 10th, 2008, 04:35 PM
  3. My puddle died
    By Gin in forum Aquatic Plants and Plant Care
    Replies: 13
    Last Post: July 6th, 2008, 01:56 PM
  4. Onc. Kalihi 'Big'
    By sadie in forum Phalaenopsis, Oncidium, & Intergenerics IN BLOOM
    Replies: 13
    Last Post: September 5th, 2007, 10:37 AM
  5. Oncidium- Kalihi
    By Gilda in forum Photography Archive 1
    Replies: 13
    Last Post: May 29th, 2004, 09:33 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.