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Phal bellina a goner?

This is a discussion on Phal bellina a goner? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hello everyone. I think unfortunately I have my first casualty of the new year. My ...

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  1. #1
    Traci's Avatar
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    Default Phal bellina a goner?

    Hello everyone. I think unfortunately I have my first casualty of the new year. My phal bellina had this rot on the leaves. I decided today to use Inocucor on it in hopes of stimulating some good bacteria. In the process of treating it two leaves came off in my hands revealing crown rot. I think it's done for of course. I have physan 20 but not sure what the best Last ditch effort to save the phal should be. I have a heat mat on Oder but it won't be until Tuesday. Any thoughts ?Name:  image.jpeg
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    It does not seem to be a very robust species ; I have lost both of my plants, and perhaps only one other (phal species) out of the 20 or 30 I have.
    Having "lost" ( i.e. killed) many, many orchids in my long experience, I always throw the dead thing away, and buy something else. Once its gone it can be forgotten ; keep it with your other plants and it is a perpetual reproach.

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    Keep it with your other plants and it is a perpetual reproach.

    Truer words were never spoken.

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    Quote Originally Posted by Dorsetman View Post
    It does not seem to be a very robust species ; I have lost both of my plants, and perhaps only one other (phal species) out of the 20 or 30 I have.
    Having "lost" ( i.e. killed) many, many orchids in my long experience, I always throw the dead thing away, and buy something else. Once its gone it can be forgotten ; keep it with your other plants and it is a perpetual reproach.
    Thanks Geoff and Harvey. I had read that it can be a species prone to rot and to be very careful about watering. At least it bloomed for me once before it went downhill. I only hope it didn't infect the others it was around. I try to be careful when watering but there is always a chance a stray droplet went somewhere.

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    Does it still have good green roots left? If it still have good roots, maybe it can recover. But then the meristem is has blackening which quite worrying. From what I read Phalaenopsis bellina could rot quickly if water left sitting too long on the crown. In Malaysia, rainy season is very "dangerous".

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    Quote Originally Posted by Azizan View Post
    Does it still have good green roots left? If it still have good roots, maybe it can recover. But then the meristem is has blackening which quite worrying. From what I read Phalaenopsis bellina could rot quickly if water left sitting too long on the crown. In Malaysia, rainy season is very "dangerous".
    Yes it does have green roots but like you said that meristem is blackening. I was really careful when watering it and switched it out of moss when I got it to lessen the rot chance. It had leaves that emerge from the crown at slightly oblique angles. I guess that set it up to collect water.

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    At this stage, if it were me, normally it will be a subject of experiment. Maybe I would try to use hormone, dilute fertilizer, physan 20 or anything at all. In the end you could say "at least I tried" without regrets. If you are planning to get another, maybe you should try mounting it but still avoid from watering the crown by soaking or spraying the roots only.

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    Quote Originally Posted by Azizan View Post
    At this stage, if it were me, normally it will be a subject of experiment. Maybe I would try to use hormone, dilute fertilizer, physan 20 or anything at all. In the end you could say "at least I tried" without regrets. If you are planning to get another, maybe you should try mounting it but still avoid from watering the crown by soaking or spraying the roots only.
    I don't think I am planning on getting another because this one was such a disaster and there are two okay three species I want before this one (Vanda sanderiana, Mexipedilum xerophyticum, and Aerides houlletiana ). I did remove it from the others and dumped physan on it. It will likely be dead in a few days but like you said at least I will know I have tried. It won't go back with the others either way and would instead be raised in the shade in my front yard if it survives. I did like the little flower but I realize that if Geoff has trouble with them I likely will as well so best to hold off for awhile.

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    Rot ? Should not be a problem if you do two things. First, always, but always, add a plant disinfectant to your water - 1:2000 or even as weak as 1:5000 . Physan is excellent - unfortunately it is not sold in EU due to stupid bureauracy , but I find various janitorial products intended for sterilising food preparation surfaces, or for swimming pool use, which are just as effective - look for quaternary ammonium products. I have done this for 30 or more years, with a collection upwards of 2000 plants, and I cannot remember ever losing a plant to crown rot.
    Second, a few years ago I went round one of the big plant factories in The Netherlands - producing ˝ million (per year) cymbidiums, miltoniopsis and dendrobiums in flower for the pot plant trade in Europe ; they had just 17 staff (!) everything was computerised and mechanised ; watering was from above by sprays - filled the crowns of the plants ! I asked about crown rot. They said, its not water that causes it, it is bacteria feeding from the fertiliser added ; "so what we do is spray feed, then for the last 30 seconds of each application we spray just pure water to wash all the feed- and bacteria - out of the crown"

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    Quote Originally Posted by Dorsetman View Post
    Rot ? Should not be a problem if you do two things. First, always, but always, add a plant disinfectant to your water - 1:2000 or even as weak as 1:5000 . Physan is excellent - unfortunately it is not sold in EU due to stupid bureauracy , but I find various janitorial products intended for sterilising food preparation surfaces, or for swimming pool use, which are just as effective - look for quaternary ammonium products. I have done this for 30 or more years, with a collection upwards of 2000 plants, and I cannot remember ever losing a plant to crown rot.
    Second, a few years ago I went round one of the big plant factories in The Netherlands - producing ˝ million (per year) cymbidiums, miltoniopsis and dendrobiums in flower for the pot plant trade in Europe ; they had just 17 staff (!) everything was computerised and mechanised ; watering was from above by sprays - filled the crowns of the plants ! I asked about crown rot. They said, its not water that causes it, it is bacteria feeding from the fertiliser added ; "so what we do is spray feed, then for the last 30 seconds of each application we spray just pure water to wash all the feed- and bacteria - out of the crown"
    Interesting! Thank you for sharing your knowledge Geoff

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