Blc. with black spots/yellow leaves

[Roberta]

Originally Posted by estación seca

When I say it isn't warm enough, I mean by day. Southern California has many winter days that are much warmer than what Etcherkate has inside her house. This winter, it's mostly been warmer there than it has been here in Phoenix.

Plants are better able to tolerate cooler nights if they have warmer days following. Long periods of day and night temperatures at the cool end of acceptable are really hard on many tropical plants grown indoors for a long winter.

Days are hardly getting much above 70 F. most of the time now. We had some hot spells (even those, it's only for a few hours, cool most of the day and of course night), but we're back into a normal weather pattern finally. Highs will be in the 60's to low 70's now, probably through most of March except for the occasional hot spell. Might be rough on Phals and most Vandas(which wouldn't be outside anyway) but Catts? I have not seen that they care much as long as nights stay above freezing. 60 F deg at night is pretty toasty (commercial growers don't even go lower than that). If there is any factor that annoys Catts in winter, I suspect that it is the short days, since they do like light and they're not getting a lot.