Water a Christmas cactus when the top inch or so of the soil feels dry, then water thoroughly until excess drains out. In practice, this generally means every 2–3 weeks under typical indoor conditions, with more frequent watering during active growth and blooming, and less during cooler winter months when growth slows. Key guidelines
- Check moisture: Insert a finger about 2.5 cm (1 inch) deep. If the mix feels dry to the touch, it’s time to water; if it still feels moist, wait a few days and recheck. This approach helps prevent both underwatering and root rot.
- Soil and potting: Use a well-draining mix (a peat-based mix with perlite or coarse sand, or a commercial cactus mix). Ensure the pot has drainage holes to prevent water from sitting in the bottom.
- Lighting and environment: Bright, indirect light and temperatures around 65–75°F (18–24°C) support even moisture use. Avoid consistently soggy soil, which can lead to root rot.
- Seasonal tweaks:
- Winter (blooming season): tends to require less frequent watering, typically every 3–4 weeks if the plant is in a cool, bright location.
- Spring/Summer: may need to water approximately every 1–2 weeks if indoors with dry air or in a warm room, especially if the plant is actively growing.
- After flowering: reduce watering to allow a dry period to encourage new growth and blooms when the plant restarts its growth cycle.
Common signs to watch
- Leaves soft or translucent and soil staying wet for long periods: overwatering. Allow soil to dry more between waterings.
- Wrinkled or shriveled stems and firm, dry soil: underwatering. Water thoroughly, then resume a regular check.
If you want, share your growing conditions (location, light, indoor vs. outdoor, pot size, and soil type) and I can tailor a more precise watering schedule.
