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.

Results 1 to 5 of 5

Leaf issues

This is a discussion on Leaf issues within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Some of my orchids new and orchid have some leaf spots on it. I'm curious ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    Louis_C is offline Junior Member
    Join Date
    Aug 2009
    Posts
    23

    Default Leaf issues

    Some of my orchids new and orchid have some leaf spots on it. I'm curious are they something serious.

    Mtdm. Rosy Sunset I just got myself last Sat. Southland Orchids Show
    I notice most leafs with this kind of spot is on the leafs near the top of the bulbs.
    I believe the spot is dry and the spot is too small to feel it. This Mtdm. also hv streak near those spots. I divide and pot into S/H
    Sunburn or blackspot?
    I used to have lots of Oncidium with some sort of spot or black thing on it. Are they normal?


    -----
    ___Bllr. purchase in Sep/Aug
    Got it as discount orchid with potting mix spilled ll over but the plant is fine. Those spot seem innocent to me.
    Underneath

    Top

    -----
    Neo.
    Black spot/ Sun burn/ Fertilizer burn/ Fungus?
    I keep this underneath CFL desk lamp. It seems to be dormant or growing slow for me I fertilizer 1/8 or 1/4 Schultz Orchids feed almost everytimes I water.

    -----
    A Sedirea seeding die since last week
    I assume those are snail bite. If it is there other other option beside beear and commercial bait? I heard pet food dry kibble work as well/


    Anyone could provide me some idea what happening and any treatment recommended. I'm going to look for cinnamon powder from 99cents only few day later since they sold out already.

  2. #2
    LizFury's Avatar
    LizFury is offline Member
    Real Name
    Liz Mateo Fury
    My Grow Area
    Outside 24/7
    Join Date
    Oct 2017
    Gender
    Female
    Location
    Palawan, Philippines
    Posts
    38
    Member's Country Flag

    Default

    I see this thread and no one gave any replies... i hope someone out there does.

  3. #3
    LunchBox is offline Junior Member
    Real Name
    Alex
    My Grow Area
    Windowsill
    Join Date
    Jan 2018
    Gender
    Male
    Location
    Denver, Colorado
    Posts
    12
    Member's Country Flag

    Default

    Same here. I have an oncidium with similar spots as the first image.

  4. #4
    oile's Avatar
    oile is offline Senior Member
    Real Name
    Elio
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Paphiopedilum, Phragmipedium
    Join Date
    Dec 2015
    Gender
    Male
    Location
    Ceva, Italia
    Posts
    720
    Member's Country Flag

    Default

    some stains on the leaves, if few, of mormas are normal, but on the 1, 2 and 4 make me doubt, if it is circumscribed to a few leaves I would cut it, verifying that they do not reform.
    Prudentially I would make alternate treatments with a copper alternating with Aliette (Bayer), they are not mixable.

  5. #5
    Dorsetman's Avatar
    Dorsetman is online now Senior Member
    Real Name
    Geoff Hands
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleya ?
    Join Date
    Oct 2010
    Location
    England, South coast.
    Posts
    3,807
    Member's Country Flag

    Default

    Black spots are dead cells.what made them die ? This is as difficult as a forensic pathologist having a dead person on the slab, and asking the same question. If there is a bullet hole ( as you can tell I read a lot of crime fiction ) it is obvious, otherwise it is more difficult. Even more difficult in the case of orchids when we - the regular contributing "experts" are not standing in your growing area.
    Snails or slugs leave bare scraped or actually totally removed areas. They are not black. Sunburn starts with bleached, whitish areas, not black.
    Black means that bacterial or fungal infection has invaded the dead cells.
    Start with disinfecting your plants regularly to clean up and minimise the bacteria and fungi - you won't eliminate because the spores are everywhere. - of the order of hundreds in every cubic metre of air in the whole world...
    If you can get Physan - lucky you, its not sold in europe now for silly bureaucratic reasons - dilute to about 1:1000 initially, and spray all parts once per month. After a few months you can reduce to 1 in 5000.
    The"best orchid collection" in the world does that all the time. ( not mine, I hasten to add) although I follow their asvice in that direction. I also add an equivalent disinfectant to every drop of water i use with my plants for any reason at all , at the weaker level.

Similar Threads

  1. Phal with identity issues
    By nabakov5 in forum General Orchid Culture
    Replies: 6
    Last Post: August 8th, 2014, 07:03 PM
  2. Server issues lately
    By Brutal_Dreamer in forum Using the Boards
    Replies: 15
    Last Post: January 2nd, 2010, 07:54 PM
  3. Off-Topic: payment issues
    By dsm in forum Orchid-Bids Discussion
    Replies: 12
    Last Post: July 14th, 2008, 10:45 PM
  4. I'm having Phal Issues
    By Diane in forum General Orchid Culture
    Replies: 7
    Last Post: July 3rd, 2005, 11:58 AM

Tags for this Thread

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.