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use of huge bark chips for ailing Cattleya?
Hi everybody... (missed y'all the past couple of years)
I discover that my Cattleya walkeriana alba 'OK' (pix on my website: www.kiva.net/~daylight ) is in poor shape. I have overwatered it several times recently, and most of the roots are dead. :-( This is depressing as it was in fine shape for two years and, I thought, now ready to divide. What is the best way to recuperate this plant, and can it involve giant pine bark chips? I'm thinking that it needs to be repotted in a very, VERY open mix. I don't want to use things like cork chunks, or styro peanuts, beause they float. I got a bag of that outdoor mulch, "pine nuggets", which is big chunks of pine bark. They look to me the right size, but need to be sterilized (after the nematode incidents, I'm paranoid). Would cooking them in the microwave, the same as pasteurizing soil, work? Would the very center of the bark chunk get hot enough? It wouldn't be wet on the interior, only hot. Maybe I should bake them in the oven instead. The Cattleya is in two pieces, each of which has only a couple of good roots. I hope that I can choose a suitable potting mix for this situation, one in which the plants get enough air to grow more roots. I worry not knowing what best to do. Any info on sterilizing this bark would be great. Thanks, Liz Indianapolis, Indiana, USA |
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