Orchid leaf problems. Orchid Diseases and Fungus, treatment and prevention from a professional.
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- Опубліковано 13 лип 2024
- Today at the Nature Company we discuss Orchid leaf problems. Professional Tips on solving your Orchids leaf spot problems , Orchid diseases and fungus.
We show you how to identify the fungus that is attacking your Orchid.
and look at the ways to treat and prevent these orchid leaf problems.
Symptoms of Black Rot.
Symptoms: The infections usually starts on the leaves, new leads
or roots, though all plant parts are susceptible. The disease spreads rapidly and will kill the plant unless treated promptly. Leaf symptoms first appear on the underside as small, irregular, watery, brown spots which rapidly become purplish brown or purplish black. The spots may have a yellowish advancing margin. The lesions enlarge with age and may ooze water if pressed. Old lesions sometimes become dry and black, often
allowing other diseases to attack the plant. The disease may spread rapidly to the rhizome and roots, particularly when the temperature and humidity levels are high.
Symptoms of Fusarium.
Symptoms: Fusarium blocks the flow of moisture through the plant’s vascular system plugging the phloem. Infected leaves are yellow, thin, shriveled, wrinkled or wilted and eventually die. The diagnostic symptom in the plant is a circle or band of purple or pinkish-purple discoloration on the outer layers of the rhizome evident when the rhizome is cut. If the disease is extensive, the entire rhizome may turn purple, and the discoloration may extend to the pseudobulbs. The pathogen is spread through improper hygiene, generally as a result of using nonsterile cutting tools,
which transfers the fungus from plant to plant. Severely infected plants may die in 3-9 weeks, while mildly infected plants gradually decline over a year or so.
Symptoms of Guignardia Leaf Spot.
Symptoms: The first signs of Guignardia infection are tiny, dark
purple, elongate lesions on either leaf surface. These lesions run
parallel to the veins and elongate into purple streaks or diamond shaped areas. Spots often merge to form large irregular lesions that may
affect a large part of the leaf. With age, the center of the lesion turns
tan. Raised, black sporing bodies develop in the affected area. Affects
mostly Ascocentrum and Vandas and their hybrids and may indicate
insufficient light. This blight is also known as Phyllosticta; the names
apply to two different sexual stages of the same fungus
.
Symptoms of Phyllosticta Leaf Spot
Symptoms: Spotting from Phyllosticta may start anywhere on the leaf or
pseudobulb. The lesions are tiny, yellow and slightly sunken. As they enlarge, they become round to oval and more sunken, especially if the infection is on the leaves. With age, they turn tan to dark brown and
develop a slightly raised, red to purple black margin. Eventually, tiny black,
raised spore structures develop in the center of the spots. Individual spots are about ¼ in across. Severely infected leaves may drop prematurely. Its presence may indicate insufficient light. This blight is also known as Guignardia; the names apply to two different sexual stages of the
same fungus.
Symptoms of Cercospora Leaf Spot
Symptoms: Infection shows first as a yellow spot on the underside of the leaf. Soon after infection occurs, the yellow green area may be noted on the top surface of the leaf. The spots continue to enlarge in a circular or irregular pattern and may eventually cover the entire leaf. With age,
the spots become slightly sunken and necrotic and change to purple-brown or purple-black. The advancing margin remains yellow. Heavily infected leaves usually fall from the plant prematurely, especially in the infection started near the base of the leaf. As the spots enlarge in irregular patterns, they become sunken and turn purplish brown to purplish black. The
top surface of the leaf first becomes chlorotic and finally necrotic.
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I noticed that this creator has stopped making videos. No matter, this video is gold for the new orchid grower. It's my go to guide for identifying diseases in my orchids and treatment options. I hope that he is ok and that one day he'll return.
Thanks for watching and the support .We are uploading again .
Love your angel wings. Beautiful back drop
Excellent! So in depth! Thank you for sharing your knowledge!
Thank you for sharing . I give this video a 10 rating. It was a superb video! . You named the diseases and treatment , for the plant that no other video has done.
Thank you for taking the time to share your wisdom. My orchids and I are in your debt.
Excellent video! One of the most informative and accurate videos I’ve seen. Thank you and I hope you make more!
Awesome, thank you!
Great job. Thanks for sharing 😊
I just found your channel wish have found this sooner. All the problems I have been having coming to life good info Thanks.
Very informative
I luv those wing’s!
thanks Ed designed them and put it all together 😍
Very informative, enjoyed & learned. Thanks ❤❤❤
Glad it was helpful! and we really appreciate your show of support thank you 😍
So informative! Thank you for sharing such valuable information.
thanks for watching
Thank you, for the information.God bless.
thanks for watching
Thank you - very imformative!
Glad it was helpful!
Wow. Fantastic detailed information. Thank so much.
thanks for watching
Excellent.
thank you kindly we appreciate your show of support 🫰
Thumb up. Very helpful, clear and systematic explanation, Thank you.
pleasure , we appreciate your show of support
Poor babies! What a super video though, thank you!
thanks for watching
Thank you so much! Excellent video👏
pleasure , i am glad you got value from it 🫂
What a great video , thank you
thanks for watching
Very helpful to a novice orchid grower.
glad we can help you ... if you need any advice or want us to make a video on something you dont understand just give us a shout 🫂
Wonderful information! Very detailed!
Glad you think so!
Thank you, great information. I was wondering what was happening to my orchid and Bird of paradise leaves. Now I can identify and treat it.
You are so welcome!
Thanks for the info God bless you fantastic idea bye
Thanks for watching!
Thanks for sharing. That was very informative.
Glad it was helpful!
Thank you!
your welcome
Excellent! Thanks! 😁
thanks for your support
Thank you soo much
pleasure .. if there are any other videos you would like us to make just ask 🫰
This is an excellent and very informative video. Great job 👍🏽
Glad it was helpful!
Wow! Great video!!!
thanks for watching
great video thank you
thanks for watching
Love your videos. I go exactly by what you say and it helps that I can get the right products being made in the same Country. Thank you
You are so welcome!
Great Video, Thanks for sharing.
pleasure ... thank you for your support 🫂
Very well done. I am struggling to identify the black spots occurring across my orchid species. Much appreciated! 👍🏻👍🏻👍🏻
f you are still having problems check our channel for more help
Great Vedio. Excellent very professional demonstration. I am a new subscriber. So happy to find you. Some of my orchids were infected and I was searching a solution to treat my orchids. Great tips. Learnt a lot. Hope you will bring us more. I'm from Sydney Australia
Thank you 🌸
thanks for watching
Excellent video.Congrats.
thanks for watching
so so useful, thank you!
Glad it was helpful!
Thank you for the video, finally an explanation for those weird brown marks.. suburn 😕
Glad it was helpful! 😁appreciate you taking the time to say so 💕🫂
Thank you. Good video.
pleasure ... they can be difficult to tell apart if you don't know what to look for
Thanks so much. i learned a lot from you , loved the video 😮
Glad it was helpful! I hope you get the right treatments for your orchids 👌
Wow, so informative and professional, i loved it
Yes!! I'm just as impressed🎉
thanks for watching
Thankyou❤️
pleasure glad it helped , we appreciate you showing your support 🫂
You’re a the best
thank you .. just years of having to deal with them 😘
DAaang!! Thanks for sharing this helps a lot 👌💯
thanks mate ... glad it helps
Good help me lots
Glad to hear that
Thanks for the thorough run-through of orchid fungal problems. Thankfully, my leaf spot is only sunburn. A suggestion for a video - my orchids keep coming almost to flower and then fail just before the flower bud matures and blooms. I’d like to know what I’m doing wrong. Thanks again!
I have done a few videos now that include this topic , does it answer your questions at all ? which orchids are you having problems with ?
My newly purchased phalaenopsis orchid has two oval black spots on one leaf. The leaves also appear to thin out where these spots appear. Based on this video, this is a sign of phyllosticta fungal infection. Thanks for this video.
I hope the video help resolve your orchid problem. Thanks for your support. Will be doing a series on Phalaenopsis soon.
Thanks for the information, very helpful. I noticed that the fungicides that you mentioned are rather common broad-spectrum fungicides used in agriculture and gardening. However, I think you got the names mixed up. Thiophanate methyl (Cleary 3336) is not the same as Epoxiconazole; the active ingredients are very different.
ah sorry about that thanks for the heads up
🙏🙏🙏
pleasure i am glad we could help 🫂
This is the best video I have seen online about this subject. I am a new subscriber. Could you do a video on orchid transplant shock? Can I use physan 20 for leaf spot? Thank you!
Thank you. It is a contact fungicide so if your plant is already badly infected you will need to use a synthetic fungicide. Use it more as a preventative measure during periods when fungus is most likely to appear.
@@thenaturecompany could you do a similar version of this video
about leaf damage from scale, spider mites, mealybugs, etc..with close ups of the pattern of damage found on leaves? Sometimes you don't see the insects, but you know there is a problem. Thanks for your indepth info!
Thank you for sharing.. Please show us how do you do the treatment.
A New video coming soon.Thanks for the support
Thank you for your video.Please could you tell me for how long a plant should continue with treatment if it has fusarium?
Keep treating until resolved. It is persistent
Just found your channel I bought and oncidium araceli very informative video l how did you make your wings beautiful ❣️
Thanks .Wings made by us using metal and beads.
Thanks for all your helpful videos. We inherited two old orchid plants and now we know how to repot them. However we don’t know how much to water them and whether to know if they have enough water. Also it seems like you don’t water the leaves so maybe just spray at the bottom by the bulb? Thanks for any advice.
😘 looks like you found the watering video before I found your comment lol ... I hope your orchids are doing well 💕
Very helpful video, thanks a lot!
Can I ask you to write names of american analogs, please?
We are now posting extra information here buymeacoffee.com/naturecompany
If you have any advice on how to deal with calonectria ilicicola on orchid roots it would be most appreciated.
one of the systemic fungicides would be the best place to start but remember to alternate your treatments between 3 different ones at least
Thanks!!!...great video. My orchids have some leaf spot and other problems. But I also have wild peacok causing damage. I am confused. Can I send you pictures for a diagnose?
SURE but cannot help with the peacock
@@thenaturecompany😂
🥰😇
thank you I am glad you got some value from our content 🫰
Now we can all identify the leaf spot damaging our orchids
👍
A lot of good information thank you so much. I did not care for the music it was very distracting.
Sorry about that
I would like to speak to you more, I just beginning in planning.
I hope our videos have been of great help to you , we are also adding extra content available on buymeacoffee.com/naturecompany
How do you use lime sulphur on orchids...time of year, what mixture rate etc? I thought it cannot be used on green plant matter so I use it only on my roses when the are completely dormant with no plants growing under them. I do have some problems that need to be attended to . Your video was most informative THANKS! Also ...do you know where I can purchase a virus test for orchids please.
you can use it as a liquid foliar spray , each one has its own mixing instructions , check the manufactures advice , remember not to spray on plants in the sun on hot days , use it as part of your integrated pest managment system . I believe you can get the virus test kits on line from America but they are pricey
I just went to a orchid society as a guest and the lady there had a large clump of orchids that was according to her infected with bacteria and she says there is no cure for the plant and to throw it away. I thought that sounded strange.
was this in Durban? , bacterial infections can be cured in most cases , it it the viral infections that generally have no cure
I cant find Odeon in gauteng? Where would you suggest I get it??? Thanks so much
Builders should have
@@thenaturecompany thanks so much. Will look there
Good afternoon I live in Florida USA, I do have the black spots on some of my orchids, I was interested on buying the ODEON and ORIUS in Amazon but I can’t find it, can you write down for me the correct name of the product that I could buy in Amazon in USA please… I love your video, I will follow you from now on . Thanks 😊
OEON is Chlorothaonil 720g/ℓ as the active ingredient and ORIUS is Tebuconazole (triazole) 250 g/ℓ
Sorry for the late reply 😳 it slipped past me . I hope it is not too late for your orchids
ah I see I answered with my personal account 😁
👍👍❗💨🍀👋
thanks we really appreciate you showing your support
What is the reason for bud blast and how to treat it. Thank you in advance
www.aos.org/orchids/orchid-pests-diseases/bud-blast.aspx
often caused by a sudden change of temperature or a change in environment like moving plants from a high humidity area (ouside maybe) to a very low humidity area (inside) . Icy cold draft or aircon . I hope this helps
ah i see I answered you with my private account 🫂
Thank you for all info but all to much for my brain. Can you suggest a good book that explains infected orchids as well as you. South africa. Can oleum be used.
Finally a South African! So glad to have found your channel
Thanks for the support
???????
@@gailnash7676 Sorry can not suggest any books which are South African specific . Oleum is used as broad spectrum insecticide with mild fungicidal properties and is effectively used in a preventive strategy .
Thank you.
7:01
thanks
Thanks for the video,
(you say many times the sound sssss/zzzz - it's hard to listen)
I have a lisp thanks for your support.
Can you write down the name of the contaqct fungacides please.
ODEON 720 SC - BROAD SPECTRUM CONTACT FUNGICIDE : active ingredient : Chlorothaonil 720g/ℓ ..sorry I missed your comment 😳 is this the one you were looking for ?
Hope you found what you needed out of Peters comments
Only showed text on screen ONE time for the chemical we should use! Also showing ALL the problems and then talking about "treatment"(sic) he should show PROBLEM and then tell us WHAT TO DO FOR THAT...
the wonderful thing about UA-cam is you can pause and replay the video as many times as you need . The screen can be too busy if the writing comes up over and over again . I will try to do each problem in a separate video thank you for you input we appreciate your advice
ah I see i answered you from my personal account
Could we treat the plants for fungus at this stage. 😊
yes
how often would we have to treat the plant for a fungus???
it might take 2 or three treatments to kill fungi completely if an orchid is badly infected but preventative measures are an on going affair , depending on time off year and when your area is most prone to fungal blooms
@@thenaturecompany Thanks so much. An excellent, helpful tuturial about fungi
Speed up the video to x1.75 and I’ll see!
Haha so much info 😄
my brain does not work that fast lol and I would sound like Bugs bunny on helium
Pls. Oll sinhala sir lanka
I did add please share in sri Lanka. මම සිංහල එකතු කලා.කරුණාකර ලංකාවේ share කරන්න
mama siṁhala ekatu kalā.karuṇākara laṁkāvē share karanna
Sorry...I call it cancer desease 😰 .Mine have lots of those black spots 😩.
but you right it does look like it is cancer . I hope you have managed to treat them by now
I see I have answered you already with my private account lol . I hope your orchids are looking better
🐍
thanks for watching
Your trailing S's are very annoying, makesssssssss it hard to stay focused.
So sorry we got a new lapel mic and filmed it twice but the amount of information is so much we couldn't do it again. But thanks for watching and we are working on the sound issues for future videos. Thanks for your input
I am so saddened by your comment which is at the least so subjective as I rather find the trailing s's charming. The video in itself is a lifesaver for me and my orchids. Thank you @The Nature Company
How dare you make a comment like that? Stop listening then
You have a problem dude.
thanks for your feed back I will do my best to try minimize my trailing ..
I cant with the "thhhhhhh" "sssssss" prolonged sounds you make every word that has an S or S sound😂😂😂😂
terribly sorry I have a lisp this was an early video I have managed to get it some what under control in later videos if you would like to go though each of the videos to hear my progression you can give me an update on how well you think i am doing . Thank you 💕
Whats wrong with you dude can you even say some of those words😂