Boreal Indian Paintbrush

Western Indian Paintbrush should be watered about once a week when the soil has dried out. When watering, the soil should be moist but not soggy. To check the soil moisture, stick your finger in the soil, up to the first knuckle. If the soil feels dry or the top inch is dry, it's time to water. Avoid overwatering, as this can lead to root rot or fungal diseases.

Western Indian Paintbrush grows best in full sunlight but can also tolerate some light shade. For best flowering, it needs between 6-8 hours of direct sunlight each day during peak blooming season. In areas with hotter summers, partial shade is recommended to avoid drying out the leaves and stem. The plant prefers cooler nights and early morning sunlight, with less direct sunlight during mid to late morning and afternoon hours. Depending on your area, this can be achieved by planting the Western Indian Paintbrush in a location that receives morning sun and afternoon shade, or filtered sun throughout the day.

Western Indian Paintbrush (Castilleja occidentalis) should be pruned once a year in late spring or early summer after the plant has finished blooming. Pruning should be done lightly, removing no more than 1-third of the stems from the plant base. Pruning any more than this can result in fewer flowers and a weaker overall structure. Keeping the plant from becoming overgrown can also help to encourage more profuse blooming. Pruning should also help to ensure the plant retains its neat and tidy shape.