Croton is an extensive flowering plant genus in the spurge family, Euphorbiaceae. The plants of this genus were described and introduced to Europeans by Georg Eberhard Rumphius. The common names for this genus are rushfoil and croton, but the latter also refers to Codiaeum variegatum. The generic name comes from the Greek κρότος, which means "tick" and refers to the shape of the seeds of certain species.
Croton Plant Care Basics
Soil
Generally speaking, Croton plants do best in rich, well-draining soil.
Crotons feel comfortable in neutral soil, which is soil with a pH level between 6.6 and 7.3. If you are unsure about soil pH, you can use a soil meter to determine the pH level.
Alternatively, Crotons can also be well cultivated in hydroponics. Optimal water storage is easier when kept in hydroponics.
If you do indeed want to change over to hydroponics, remove the soil completely, wash the roots thoroughly and do not change the location for the first few months after the switch.
Light
Croton likes a good amount of bright, indirect light. A certain amount of direct sunlight can be beneficial for your Croton, however, it can also lead to burned leaves.
In summer, make sure not to expose your Croton to the burning midday sun.
Watering
Croton plants are in favor of quite a lot of water. It is, therefore, best to keep the compost moist. Waterlogging needs to be avoided.
Make sure to water your Croton thoroughly when the surface of the soil feels dry.
Tap water can be used for crotons (if you do use it, make sure it is not cold!), but lime-free water or distilled water is the preferred choice.
Temperature
Croton thrives well at room temperature (18 to 24 degrees/64.4 to 75.2 °F).
In winter, make sure that your Croton is not exposed to temperatures below 13 °C (55.4°F).
As is true with many other houseplants, Crotons do not respond well to sudden changes in temperature. In fact, this could even be fatal for your plant.
Humidity
Native to the tropics of Sri Lanka, this plant prefers high humidity. By simply keeping this plant in your home, be it in the kitchen or the living room, you will most certainly not reach the desired humidity level.