Quote:
Originally Posted by estación seca
For example, Cattleya warscewiczii (formerly called C. gigas):
Cattleya warscewiczii - Chadwick Orchids
This is a unifoliate species. It does not make roots with the new growth. It only makes roots after the new growth has finished growing and has flowered! The new growth in spring must depend on the old roots formed the previous year. If the grower makes the mistake of repotting the plant when the new growth starts, the roots will be damaged. The plant will not make new roots for some months at this point. Hoped-for flowers will probably not develop, the new growth may not even survive.
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Cattleya dowiana - and some its hybrids where it's dominant, behave that way too. It's why many people find Blc. Toshi Aoki hard to grow and easy to kill - it's a complex hybrid, but over half C. dowiana... and the time for rooting (and potting) is fall, after blooming, not intuitive because it's getting darker and cooler... and it does the new growth in the spring. It does also need to dry out somewhat in winter.