Spring and summer: active growth
This is when most houseplants grow actively, with longer, often warmer days. Water needs increase accordingly — it's the time to check soil moisture more regularly, without watering "on a fixed schedule" out of habit.
Fall and winter: the slowdown
Growth slows significantly as light and temperatures drop. Water needs decrease noticeably — this is when overwatering becomes the biggest risk, as soil stays wet longer due to less evaporation and uptake by the plant. For most houseplants, spacing out watering by 30-50% in winter is a good general rule.
The right habit, year-round
Rather than a fixed calendar, it's better to check the soil's actual moisture (finger test, 2-3 cm / 1 inch deep) before each watering. This habit naturally adapts to seasonal shifts, your home's light exposure, and winter heating, which dries out the air.