Water: Crotons need plenty of water. Soil must be moist but not soggy. General watering is every 4-5 days but may differ based on different living environment. Use finger or wooden stick to poke deep into the soil to check the wetness/humidity. If damp, wait 3-4 days and check again. If moderately humid, wait 1-2 days and check again. If dry, water thoroughly (approximately 10oz). Avoid overwatering.
Light: Most of croton species can be grown in full sun or bright filtered light. They perform their best color when the light is bright.
Air & Temperature: Air circulation helps water evaporation, prevents condensation on the leaf surfaces, and reduces the growth of fungal infections and rot. Dramatic temperature change will damage the plant. Room temperature is recommended (59-80F)
Fertilize: Mix few drops of liquid plant food with water when watering the plant. Use on every watering session for best result. Another way of using the liquid plant food is to twist off the tip (not entire cap) and stick the entire bottle into the soil near the root. Do not squeeze the bottle as the soil will naturally absorb the liquid. When the bottle is empty, replace with new bottle.