Quote:
Originally Posted by estación seca
Crown rot is from the center down and outward. The newest emerging leaves die. It's usually caused by water in the crown plus temperatures too high or too low.
Collar rot starts at the base of the oldest leaf and the stem. It is usually triggered by high temperatures plus one of either high humidity, or the top of the medium staying very wet.
If a Phal. dies of lack of water it can sometimes look like that, too. But that can take weeks.
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Oh wow, I'd never heard of collar rot before. I got through crown rot some years ago so I was slightly optimistic, but I guess it was just time. We had a good run.
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