Watering
Care
Beginner's guide
Overwatering is the number one cause of indoor plant death, far ahead of lack of water. Yet, with a few simple rules and some observation, watering becomes a natural and intuitive act. In this complete guide, you will learn to decode your plants' needs, recognize signs of thirst (or drowning), and adopt the right habits according to the seasons.
The 3 golden rules of watering
1. Water according to needs, not the calendar
Forget "I water every Sunday." Each plant has its own rhythm, which varies with light, temperature, ambient humidity, and season. The rule: observe before watering.
2. Better to underwater than overwater
A plant can recover from temporary lack of water. However, waterlogged roots rot quickly and it is often irreversible. When in doubt, wait 1-2 more days.
3. Water deeply, but let dry between waterings
Good watering = the entire root ball is moist, water drains through the drainage holes. Then let the soil partially dry before the next watering. Avoid small daily doses that only hydrate the surface.
Watering frequency by plant type
Here is a guideline table to help you (adapt according to your environment):
| Plant type | Summer frequency | Winter frequency | Test before watering |
|---|---|---|---|
|
Tropical plants (Monstera, Pothos, Philodendron) |
Once a week | Once every 10-14 days | 2-3 cm of dry soil |
|
Succulent and fleshy plants (Aloe, Crassula, Echeveria) |
Once every 2 weeks | Once a month | Completely dry soil |
|
Ferns (Nephrolepis, Asplenium) |
Twice a week | Once a week | Soil always slightly moist |
| Cacti | Once every 3 weeks | Once every 2 months (or pause) | Dry soil + wait 1 week |
|
Variegated foliage plants (Calathea, Maranta) |
Twice a week | Once a week | Dry surface, slightly moist base |
|
Classic air-purifying plants (Sansevieria, ZZ plant) |
Once every 10 days | Once every 3 weeks | Dry soil 5 cm deep |
How to tell if my plant is thirsty? 5 signs to watch for
- The finger test: push your index finger 2-3 cm into the soil. If it’s dry, it’s time to water. If still moist, wait.
- Pot weight: lift the pot. If it’s light, the soil is dry. With experience, you’ll recognize each plant’s “thirst” weight.
- Drooping leaves: leaves hanging limply (but still green) often signal a lack of water.
- Leaf edges browning: may indicate chronic underwatering (or very hard water).
- Soil shrinking: if the root ball pulls away from the pot walls, it’s too dry. Water by soaking to deeply rehydrate.
Overwatering vs underwatering: visual diagnosis
🚨 Signs of overwatering (most common)
- Yellow leaves falling (especially older ones)
- Soft stems, blackened at the base
- Moldy or rotten smell
- Fungus gnats flying around the pot
- Soil constantly soggy, standing water in the saucer
⚠️ Solution
Stop watering, remove standing water, let the soil dry. If roots are rotten (black, soft), repot cutting away damaged parts.
🌵 Signs of underwatering (less serious)
- Dry, brittle leaves browning at the edges
- Leaves falling but still green
- Growth slowed or stopped
- Soil very dry, hard, shrunken
✅ Solution
Water thoroughly (from above or by soaking). The plant should recover within 24-48 hours.
Adjust watering according to the season
🌸 Spring & summer (March to September)
This is the active growth period. Plants need more water because they transpire more with heat and light. Gradually increase watering frequency as the days get longer.
🍂 Autumn & winter (October to February)
Most plants enter a vegetative rest: they grow less or not at all. Reduce watering by 30 to 50%. Some plants (cacti, succulents) can even be kept dry for several weeks.
💡 Tip
Check our month-by-month care calendar to adjust your plant care according to the season.
Pro tools and tips for perfect watering
🪴 Long-spout watering can
Essential for watering at the base without wetting the foliage (risk of disease). Prefer a 1-2 liter model, easy to handle.
📏 The moisture meter
A small device to plant in the soil that measures moisture deep down. Perfect for beginners or plants in large opaque pots.
💧 Bottom watering (watering by immersion)
Submerge the pot (with drainage holes) in a basin of water for 10-15 minutes. The soil absorbs water by capillarity. Ideal for rehydrating a very dry root ball or for orchids.
🌿 Room temperature water
Avoid ice-cold water that shocks the roots. Let tap water sit for 24 hours to let chlorine evaporate (or use filtered/rainwater).
🪴 Pots with water reservoirs
Practical for water-loving plants or if you go on vacation. Warning: not suitable for plants that like to dry out between waterings (succulents, cacti).
Frequently Asked Questions
Yes, but let it sit for 24 hours to remove chlorine. If your water is very hard, prefer filtered or rainwater for sensitive plants like Calathea and ferns.
Yes, always! Standing water rots roots and attracts gnats. Empty the saucer 15-30 minutes after watering.
It depends on the species: a Sansevieria or a cactus can last 3-4 weeks, while a fern will suffer after 4-5 days. For extended absences, use automatic watering systems or entrust your plants to a friend.
Yellowing is often a sign of overwatering, not underwatering. Check that the soil dries well between waterings and that the pot has drainage holes.
Water until it drains out of the drainage holes. For a 15 cm pot, about 200-300 ml is typical. The key is to moisten the entire root ball, not just the surface.
Yes, if it’s cooled and unsalted. It contains nutrients beneficial to plants. Avoid using potato cooking water (too much starch).
Yes, dry air speeds up evaporation. Slightly increase watering frequency and consider misting or placing a humidifier near your plants.
Water thoroughly right after repotting to settle the soil and remove air pockets. Then wait for the soil to dry before watering again (fresh soil retains water better).
Morning is ideal: the plant has the whole day to absorb water. In the evening, stagnant moisture can encourage fungal diseases, especially in winter.
Use the finger test (insert 2-3 cm into the soil), lift the pot to check its weight, observe drooping leaves or browning edges, and check if the soil pulls away from the pot walls.
Overwatering causes yellowing leaves that fall off, soft stems, a musty smell, and stagnant water. Underwatering causes dry, brittle leaves that brown at the edges and very hard soil. Overwatering is more serious and often irreversible.
In summary: the right habits for successful watering
- Always test soil moisture before watering (finger or moisture meter)
- Water deeply, then let the soil partially dry
- Always empty saucers
- Adjust frequency according to the season and temperature
- Use room temperature water
To avoid:
- ❌ Don’t water "out of habit" or on a fixed schedule
- ❌ Never let water pool at the bottom of the pot
- ❌ Don’t water if the soil is still moist
With these tips, you'll quickly develop your "watering instinct," and your plants will thank you with vigorous growth and vibrant foliage!
