What causes my violets to change colour?
My violets are grown under Philips 865 fluorescent lighting. The medium used is Klasmann Peat mixed with pearlite. Many of my light colour varities change to a solid blue or purple as time goes by. Whenever the leave stems change to red, then the plant will bloom in a darker colour.
One of these include my Lemon Whip, the following photos were taken when it's young, then when it's mature. The last one is one of it's off springs by leave propagation. Sadly it too, has it's leaves changed from a light to dark green and leave stems turn red.
I read that some people advise to change the potting medium every 3-6 months. Having over 200 violets makes this an exhaustive task, especially the violets continue to grow and flower happily.
What is the cause of this problem and is there an easy way to let the violet to bloom to it's original colour?
This post was edited by Zukoll on Mon, Oct 14, 13 at 14:07