How to water houseplants correctly
The definitive guide: when, how much, with what water, and what tools.
Updated on 2026-07-17 · 6 min
Wrong watering is the number-one killer of houseplants. It is not your fault if your plants die: nobody teaches us that almost every plant prefers under-watering to over-watering. This guide gives you a method that works for 90% of indoor species.
The golden rule
Before watering, always check the soil with a finger or a moisture meter. If the top 3–4 cm are still moist, wait. If dry, water. That is it.
Step-by-step method
1. Bring the plant to a sink or a large container. 2. Water slowly and thoroughly until water flows from the drainage holes. 3. Let it drip for 10–15 minutes. 4. Empty the saucer completely. 5. Return the plant to its spot.
What water to use
Room-temperature water. When possible, avoid very hard water (calathea, orchids and ferns suffer from it). Rainwater or filtered water are ideal. Let tap water stand for 24 hours to let chlorine evaporate.
Common mistakes to avoid
Watering on a schedule instead of on demand.
Leaving standing water in the saucer.
Misting leaves instead of watering the substrate.
Sprinkling too fast without soaking the whole root ball.
Frequently asked questions
Better to water in the morning or evening?
Morning: roots absorb better with rising temperature and any wet leaves dry faster.
How many times a week should I water?
There is no universal answer: it depends on species, pot, season, indoor humidity. Check the soil, not the calendar.