I'm having trouble with one of my P. moranensis clones. Flower scrapes form and the die before they have a chance to open. The scrapes only grow till they are about 1 inch long, then the bud turns kind of gray and goes limp.
Conditions: 10" from 2 40w bulbs, day temp 75F night temp 65F. Plants are are watered from above every other day...water doesn't touch the leaves.
Does anyone know what causes this?