Most standard Vandas prefer night time temps no lower than 65F. However, they will grudgingly tolerate temps down to 55F.
If lower than 55F is forecast, bring them inside.
There are certain species, which are fine with lower t emps (coerulea & cristata), and to some extent tricolor, which is OK with Cattleya temperatures.
__________________
Kim (Fair Orchids)
Founder of SPCOP (Society to Prevention of Cruelty to Orchid People), with the goal of barring the taxonomists from tinkering with established genera!
I am neither a 'lumper' nor a 'splitter', but I refuse to re-write millions of labels.
|