Water regularly to keep the soil consistently moist, especially during the growing season. Reduce watering in cooler months, allowing the top few centimeters of soil to dry out slightly between waterings.

Avoid waterlogging, which can lead to root rot. Ensure good drainage.

Pruning is generally minimal for Caryota maxima. Remove any dead, damaged, or diseased fronds as needed to maintain the plant's appearance and health. Cut back to the base of the frond stalk.

Avoid heavy pruning, as this can stress the palm.

Propagation is typically done from seed. Seeds require warm temperatures and consistent moisture to germinate, which can be a slow process. Stratification may sometimes be beneficial.

Grafting is also a possibility for experienced horticulturists.

Repot young plants annually or when rootbound. Mature plants can be repotted every 2-3 years. Use a well-draining potting mix. Choose a pot that is only slightly larger than the current one to avoid overwatering issues.