Fertilizer/ feed for the plant:The Croton Petra plant needs humus-rich soil to grow. Feed the plant once a week using 3-1-2 liquid fertiliser. If you find that despite regular feeding, the plant is malnourished, increase the amount of fertiliser but keep a close watch since he does not like to be overfed and will tell you as much through dull leaves.
Repotting : For the first 3 years, repot the Croton Petra once a year, and after that only repot when the roots have outgrown the pot. Use a pot that is 2 inches wider than the current pot while repotting and use fresh humus-rich soil.
Propogation : The best and most efficient way to propagate the Croton Petra is through stem cuttings. Another method is to pot the ‘sports’, or shoots that grow independently, in separate pots.