Crotons are sensitive to moisture and require weekly or daily watering, depending on the situation. The soil should never stay dry for an extended period of time, but you should let the soil dry before watering to prevent drowning the plant. If you see the leaves starting to droop, check the soil and water.
Fertilizing croton plants will encourage growth in these plants, but there is no need to feed them more than once a month. The fertilizer should be high in nitrogen and potassium, but feeding the plant too much can cause the leaves to dull and damage the roots.
Some varieties of croton need high light, while others need medium or low light. In general, the more variegated and colorful the croton plant, the more light it will need.
Your Croton Magnificent prefers temperatures between 60-70 degrees. Keep your Croton away from drafts and cold areas like a windowpane in the winter. For best results, use a general houseplant fertilizer once in early spring, once in early summer, and again in mid-summer. Do not feed in the fall or winter.
Repot croton only as needed and only during spring or early summer when the plant is actively growing. The plant needs repotting if the roots are growing through the drainage hole or if you see roots at the top of the soil. There are other signs that indicate it's time to repot a croton.