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#1
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rot rot rot
gah! rot below the medium. grrr. done the H2O2 thing; done the
cinnamon thing; lost two plants (one a seedling that i thought was getting better, and the phal bellina from [insert name of large east coast orchid grower which shall remain nameless--no one on here] that started it all); now my Br. Lancer clone has it. did the H2O2 thing and cut away the bad parts and cut the spikes off and sprayed with a copper fungicide (all i had)--and now i'm paranoid the whole collection's got it. besides physan 20, what could i use as a prophylactic spray/drench on the rest? these plants are in my living room so i don't want to go too toxic; fan on them for 8 hrs a day; the rest of the time the heat pump's running with two vents directly below the plants. AND my african violets have powdery mildew. i think i'm just going to switch to cut flowers. --j_a, cross and grumpy |
#2
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rot rot rot
Have you considered Neem oil, or google organic gardening and see if
you can find some tricks, but in your case, proably the best solution is just take them outside, or to the garage and treat them, you shouldn't have problems once the plants dry, also with rot, when they are recovering arn't you supposed to keep the plants alittle on the dryer side to help prevent a relapse? Jack |
#3
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rot rot rot
-sigh- trying to do the dryer-side thing but they're all in sphag
--because it's so dry in the house 8 mos out of the year that they shrivel up and die if they're in bark. (primarily phals.) i have neem also; if it's warm enough this weekend i was going to take them all outside and spray them with one or the other; thought i'd run my griping by the group first, though. --j_a |
#4
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rot rot rot
Have you reviewed SemiHydro? Seems to be a way to bypass all this
rotting of bark, sphrag, etc. Plant roots have a damp substrate to grow in that provides the perfect atmosphere for the roots. I have just started using it so don't have a history to report on. Joe T |
#5
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rot rot rot
i actually tried one in semi hydro once--shrivelled up and died.
it might be time to revisit it though.... --j_a |
#6
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rot rot rot
I just repotted a Cattleya I recently purchased from a local orchid
house. It was in total large charcoal! Had great and healthy roots. I bought it in full bloom and the flowers lasted two weeks. I put it into the same sized pot in SemiHydro. I just visited the Santa Barbarba Estate Orchids site and read all their stuff, they are going to total crushed Granite as a potting medium! WOW, had not thought of that. I know you are in the middle of a war so am tossing in my two cents worth, maybe something will turn it around for you. I am not sure rotting is a virus, most I read it is from wetness and medium breakdown. Good luck, keep us posted. Joe T |
#7
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rot rot rot
from what i read, it might be bacterial.
al keeps his phals in pea gravel--but he has a GH where he can control the humidity. this morning, for instance, the orchids were in 50% humidity acc to the hygrometer. thx for the suggestions; i will keep griping to myself and yelling at the plants and maybe just try spraying things on 'em til they die. --j_a |
#8
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rot rot rot
once ounce of bleach per gallon of water is a good disinfectant.
-- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Artwork, Books and Lots of Free Info! wrote in message oups.com... gah! rot below the medium. grrr. done the H2O2 thing; done the cinnamon thing; lost two plants (one a seedling that i thought was getting better, and the phal bellina from [insert name of large east coast orchid grower which shall remain nameless--no one on here] that started it all); now my Br. Lancer clone has it. did the H2O2 thing and cut away the bad parts and cut the spikes off and sprayed with a copper fungicide (all i had)--and now i'm paranoid the whole collection's got it. besides physan 20, what could i use as a prophylactic spray/drench on the rest? these plants are in my living room so i don't want to go too toxic; fan on them for 8 hrs a day; the rest of the time the heat pump's running with two vents directly below the plants. AND my african violets have powdery mildew. i think i'm just going to switch to cut flowers. --j_a, cross and grumpy |
#9
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rot rot rot
I have mine in S/H and my phals are loving it, except one rescue and
it's a ******* child living in a baggie now ( it lost all it's roots, but i'm fighting to keep it because it looks similar to a Phal. bellina) I have my orchids set up on a food grade wire shelving unit about 6' H, 4' L, 2' W, under a plastic bag from my mattress, I keep about 50% humidty with daily misting and large rubbermaid boxes that fit the shelves draining in to another at the bottom. Its close culture so I know that I am risking loosing everything, but so far it is the best I've been able to do as all the humidity in alaska is currently on the ground (being very slippery BTW) It is low maintence, once every two weeks I take the plastic off and wash the alge out of the trays, check the plants and adjust as needed. If you want I'll send you pics though it's not a preaty setup. Jack |
#10
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rot rot rot
Why do you say "besides Physan"? What you mentionned trying is at least as
toxic as Physan. Physan is a quartenary ammonium compound closely related to the same stuff people put in their pools as an algacide/bactericide/fungicide. I've had better success with Physan than with anything else. Cut out the infection and soak the rest for 15 min in 1 tsp/gal. I've recovered catts, paphs and a phal from certain death. The stuff is a lot milder than bleach, peroxide or copper and I think works better. Hope this helps. Gary wrote in message oups.com... gah! rot below the medium. grrr. done the H2O2 thing; done the cinnamon thing; lost two plants (one a seedling that i thought was getting better, and the phal bellina from [insert name of large east coast orchid grower which shall remain nameless--no one on here] that started it all); now my Br. Lancer clone has it. did the H2O2 thing and cut away the bad parts and cut the spikes off and sprayed with a copper fungicide (all i had)--and now i'm paranoid the whole collection's got it. besides physan 20, what could i use as a prophylactic spray/drench on the rest? these plants are in my living room so i don't want to go too toxic; fan on them for 8 hrs a day; the rest of the time the heat pump's running with two vents directly below the plants. AND my african violets have powdery mildew. i think i'm just going to switch to cut flowers. --j_a, cross and grumpy |
#11
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rot rot rot
Just my 2 cents here. I'm a firm believer in Physan, but if I were growing
inside, I'd rather put up with the smell of bleach for a few days than the smell of Physan. And even outside, we occasionally wash down the grow areas with bleach. As far as copper based products are concerned, I wouldn't categorize myself as a *tree hugger*, but I imagine that any of us who ardently love orchids, or any other plants, have at least a modicum of concern about the environment. Copper has its place, but it's one of those elements that does not break down in the ground. From what I know, it pretty much stays where it lands. Chemists, correct me if I am wrong. Also, if you grow Dends, be very careful with it. Dends will drop their leaves if treated with a copper based product. Semi hydro works wonders for some of my plants. I often wonder why I haven't bitten the bullet and gone for it on a wholesale basis. Potting medium? Orchids are not as fussy as we think they are. But, you need to adjust watering, etc., based upon the medium you choose. I have been growing Catts and Dends in plain old river rock or pea stone using plastic pots for about 5 years. No problem. But I tend to *underwater*, so I am gradually going to Aliflor or Primagra (sp?). Our Phals are in Aliflor now, for the most part. We got tired of root rot. The exceptions are small plants which dry out faster; those get spaghnum. For the plants that I have in a CHC mix, we need to take into account how much water that stuff wicks up - a lot! There are as many ways to pot an orchid as there are people who grow them. Two recent speakers at our society meetings illustrate this. Jeff Adkins (Adkins Orchids, Fort Lauderdale) did a demo on repotting Dends. He used CHC 'plugs'. I would hesitate to use them for Dends; too much water retention during our rainy season. But he grows great plants, so who can argue, except that he has a more controlled environment than we do? And Michael Sinn (Canaima Orchids, Ellenton, FL) is an undisputed expert on Venezuelan Catt species. I bought two plants from him, a mossiae and a leuddemanniana, and both are in baskets with spaghnum. That won't work for my grow area, so after they bloom I will repot them into something more suitable for us. Hmph. I guess that was a dollar's worth, not 2 cents! Diana |
#12
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rot rot rot
thanks all for the addt'l advice--didn't know that about the copper.
ray--can the bleach solution be used on the plants themselves? jack--i'm also on wire racks over pyrex baking dishes of water. a shot of bleach in the water in the dishes keeps the algae down (or at least turns it colorless. of course, i don't know what it would do to rubber....) --j_a (and the Br Lancer has not fallen over dead yet--in fact, it may be my imagination but i think it's looking slightly better.) |
#13
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rot rot rot
Yep. I did so for years until I bit the bullet and bought the Physan, which
has a scent that - unlike Diana - I prefer to bleach. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Artwork, Books and Lots of Free Info! "unknown" wrote in message ... thanks all for the addt'l advice--didn't know that about the copper. ray--can the bleach solution be used on the plants themselves? jack--i'm also on wire racks over pyrex baking dishes of water. a shot of bleach in the water in the dishes keeps the algae down (or at least turns it colorless. of course, i don't know what it would do to rubber....) --j_a (and the Br Lancer has not fallen over dead yet--in fact, it may be my imagination but i think it's looking slightly better.) |
#14
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rot rot rot
I prefer the scent of Physan too. Wonder if it's a male thing, or if bleach
is a female thing? Gary "Ray" wrote in message ... Yep. I did so for years until I bit the bullet and bought the Physan, which has a scent that - unlike Diana - I prefer to bleach. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Artwork, Books and Lots of Free Info! "unknown" wrote in message ... thanks all for the addt'l advice--didn't know that about the copper. ray--can the bleach solution be used on the plants themselves? jack--i'm also on wire racks over pyrex baking dishes of water. a shot of bleach in the water in the dishes keeps the algae down (or at least turns it colorless. of course, i don't know what it would do to rubber....) --j_a (and the Br Lancer has not fallen over dead yet--in fact, it may be my imagination but i think it's looking slightly better.) |
#15
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rot rot rot
Admittedly it's an unsignificant sample, but my wife too prefers bleach
which is what lead to my speculation. Gary "V_coerulea" wrote in message ... I prefer the scent of Physan too. Wonder if it's a male thing, or if bleach is a female thing? Gary "Ray" wrote in message ... Yep. I did so for years until I bit the bullet and bought the Physan, which has a scent that - unlike Diana - I prefer to bleach. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Artwork, Books and Lots of Free Info! "unknown" wrote in message ... thanks all for the addt'l advice--didn't know that about the copper. ray--can the bleach solution be used on the plants themselves? jack--i'm also on wire racks over pyrex baking dishes of water. a shot of bleach in the water in the dishes keeps the algae down (or at least turns it colorless. of course, i don't know what it would do to rubber....) --j_a (and the Br Lancer has not fallen over dead yet--in fact, it may be my imagination but i think it's looking slightly better.) |
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