Watering:
Water once a week and allow it to dry completely between waterings.
Fertilizer:
Croton fertilizer target ratios of 3-1-2 and 8-2-10 are two good choices.
Re-potting:
For the first three growing seasons, re-pot a young croton every year in the spring or early summer. After that, only re-pot when you notice roots growing out of the drainage holes.
Temperature:
Temperatures between 15.5 to 21 degrees Celsius are ideal for this plant. In the winter, keep your Croton Petra away from draughts and cold spots, such as a windowpane.