Thanks, Martin
>My impression is that plants in the wild grow much more slowly than those >in cultivation. When you see a large plant in the wild it may have taken >10 or 15 years to get to that size. > >As far as the length of roots go, putting a plant in a pot limits what the >roots can do. As the plant (and the pot) get bigger the roots (especially >in the center part of the plant) can stay wet longer and get less >oxygen. When Cattleyas get to specimen size they do better in a slatted >basket with a very loose potting mix. > >Personally I find that my Cattleyas (and just about everything else) do >best with at least 150 ppm nitrogen, provided that they are flushed >thoroughly to prevent salt build-up. Also, the more light the better (but >don't burn the leaves). With modern HID lamps it is possible to provide >plants with far more light than they get in the wild: long cloudless days. > >Martin
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