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Slipper Orchid Resource Center
Non-Slipper Orchid Discussion
Cattleya dowiana update
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<blockquote data-quote="My Green Pets" data-source="post: 726117" data-attributes="member: 45166"><p>David, your dowiana's roots are nothing short of beastly!!! WOW!! I can say a couple of my rosita seedlings are growing vigorously and putting roots out everywhere, very impressed with this species!</p><p></p><p>This dry treatment brings to mind the Catasetinae and how leading breeder Fred Clarke recommends not watering the new growth until roots are 'well established' meaning reaching deeply into the pot, even beginning to circle around in the bottom.</p><p></p><p>As for rex, the experiment is testing the hypothesis that by imitating the average temperatures and monthly rainfall in Moyobamba, the plants will adopt a habit similar to what they would exhibit in the wild. Unfortunately the only first-hand account of their habitat is the November 1942 article by Blossfeld in the AOS Bulletin. There's probably more out there, I just haven't dug very deep. (Leads on related info would be enthusiastically pursued and much appreciated!)</p><p></p><p>It is looking like they are doing that this year. Blossfeld mentions arriving in the habitat towards the end of the dry season (August in Peru) only to find the plants in full growth, and had to wait a month until the bulbs were more or less completed so that he could collect. He says in the wild they bloom shortly after the dry season, which is what I'm seeing in the tent. In March the 4-month period of miniscule amounts of fertilizer and reduced water will end. I will start feeding at around 25 ppm N with every watering, and they should be blooming by April. Most accounts describe this plant as a mid-to-late-summer bloomer in the Northern Hemisphere.</p><p></p><p>What I'm most interested to see is if very low levels of fertilizer and fewer waterings during the full 4-month dry season will improve flower counts.</p></blockquote><p></p>
[QUOTE="My Green Pets, post: 726117, member: 45166"] David, your dowiana's roots are nothing short of beastly!!! WOW!! I can say a couple of my rosita seedlings are growing vigorously and putting roots out everywhere, very impressed with this species! This dry treatment brings to mind the Catasetinae and how leading breeder Fred Clarke recommends not watering the new growth until roots are 'well established' meaning reaching deeply into the pot, even beginning to circle around in the bottom. As for rex, the experiment is testing the hypothesis that by imitating the average temperatures and monthly rainfall in Moyobamba, the plants will adopt a habit similar to what they would exhibit in the wild. Unfortunately the only first-hand account of their habitat is the November 1942 article by Blossfeld in the AOS Bulletin. There's probably more out there, I just haven't dug very deep. (Leads on related info would be enthusiastically pursued and much appreciated!) It is looking like they are doing that this year. Blossfeld mentions arriving in the habitat towards the end of the dry season (August in Peru) only to find the plants in full growth, and had to wait a month until the bulbs were more or less completed so that he could collect. He says in the wild they bloom shortly after the dry season, which is what I'm seeing in the tent. In March the 4-month period of miniscule amounts of fertilizer and reduced water will end. I will start feeding at around 25 ppm N with every watering, and they should be blooming by April. Most accounts describe this plant as a mid-to-late-summer bloomer in the Northern Hemisphere. What I'm most interested to see is if very low levels of fertilizer and fewer waterings during the full 4-month dry season will improve flower counts. [/QUOTE]
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Slipper Orchid Resource Center
Non-Slipper Orchid Discussion
Cattleya dowiana update
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