Water potted poinsettias only when the top 1-2 inches of soil feel dry to the touch. Frequency varies by conditions like room temperature, humidity, and light, typically every 5-10 days indoors during winter.
Checking Soil Moisture
Use the finger test: insert a finger 2cm into the soil; water if dry and warm. Lift the pot to check weight—heavy means moist soil—or note if the surface lightens in color. Avoid set schedules, as warmer spots dry soil faster.
Watering Amounts
For a standard 13cm pot, use about 100ml (a champagne glassful); minis in 6cm pots need 10-20ml (half a shot glass). Water thoroughly until it drains out the bottom, then empty the saucer after 15 minutes to prevent root rot. Use room-temperature, soft water if possible.
Common Mistakes
Overwatering causes leaf drop; underwatering wilts bracts. In dormancy after flowering, reduce to once weekly at cooler temps around 15°C. Mini plants and peat-free soil may need more frequent checks.
