When to Water a Cactus?
of reading
Cacti are often described as immortal plants that you simply cannot kill. That's not true!
Paradoxically, most indoor cacti die from... too much water. Like other succulents, they are adapted to arid environments and store water in their tissues to survive.
But "drought-resistant" doesn't mean "no water needed". Here's how to find the perfect balance to make your thorny plants bloom.
1. Understanding the cycle: summer vs winter
The secret lies in the calendar. Your cactus follows a different rhythm at different times of year.
Spring / summer (growth)
It's the active season. It's thirsty! Water as soon as the soil is dry (about once a week if it's hot). Water thoroughly: the water should drain through the pot.
Autumn / winter (dormancy)
As the days get shorter, the cactus becomes dormant. Its metabolism stops. You need to water far less often (at most once a month, or stop altogether if the room is cool). If you overwater it in winter, it will rot.
2. How to water without causing rot
The body of the cactus (its stem or pads) does not tolerate lingering moisture. If you pour water on it, you risk creating brown spots or rot.
The golden rule: Aim for the soil, not the plant. Water should go directly to the roots.
For this, you need precision tools.
The cactus collector's secret tool
For small cacti and succulents tightly packed in their pots, a watering can is sometimes too big. The solution? A watering pipette.
It lets you apply water drop by drop, exactly where it is needed, without wetting the body of the plant.
View the Precision Pipette
3. Should you mist a cactus?
Unlike tropical plants, cacti do not need ambient humidity. However, they do have an enemy: dust.
Dust accumulates between the spines and prevents the plant from capturing light. Once or twice a year, use a plant mister to "wash" your cactus and restore its shine. Do it in the morning so it dries quickly.
For a vibrant cactus
The brass mister is ideal for gently removing dust from your cacti without soaking the potting soil.
View the Plant Mister4. The telltale signs
Your cactus is sending you signals. Learn to read them:
- It becomes soft, yellow or black at the base: It's rot! You've overwatered. Stop all watering, put it in the sun, and pray. If the base is black, it's often doomed.
- It wrinkles or shrivels: It's thirsty! It's drawing on its last reserves. A thorough watering (soaking the pot) should plump it up again within 24 hours.
- It leans towards the window: It is seeking light. Rotate the pot regularly.
In summary
Cacti like extremes: plenty of water in one go, followed by a long dry spell. Water generously, but infrequently.
Get equipped for gardening