Hot blooms during the hot weather

Bougainvilleas needs a short duration of drought for them to bloom
Bleeding heart vine started to show up after a long slumber of dormancy only to face burnt petals during the sun scorched days.

I needed to water almost 3-4 times daily to keep the humidity level just barely.
Once I didn't for a day and I totally lost the passion fruit vine.
Now I had to prune all the vines and hope for a new regeneration after the dry season is over.