The leaves on some of my young (around 5 to 6 months old) Adeniums have started to turn red underneath...like there is blood in their veins...also, a few have developed red pigment on areas of the leaves too. Some of the newly growing leaves look red.
What is causing this...is it nutrient deficiency ? If so, does anyone have any ideas as to what's missing ?
No other signs of problems - no pests and the roots look healthy.
(Any white/dark marks on the leaves in the photos are just dust from the compost and perlite)
