Succulents and cacti are killed far more often by kindness than neglect — they store water in their leaves, stems or roots and are adapted to survive drought, so the usual houseplant watering habits drown them. The good news is that once you switch to their rhythm, they’re among the easiest plants to keep. This is a general guide; species vary (desert vs jungle cacti, for example), so treat it as the framework.
How succulents and cacti use water
These plants store moisture in fleshy tissues and take it up in occasional soakings in the wild, then endure long dry spells. Their weakness is constant moisture around the roots, which rots them quickly. So the goal isn’t little sips — it’s infrequent, thorough watering with a proper dry-out in between.
The soak-and-dry method
The core technique: water thoroughly until it runs from the drainage holes, then don’t water again until the soil is completely dry. This mimics desert rainfall and lets roots breathe between drinks. Check by pushing a finger deep into the mix or lifting the pot — water only when it’s bone dry all the way down, not just at the surface.
How often (it depends, don’t schedule)
Frequency varies hugely with light, heat, pot and season — anywhere from every week or two in warm active growth to once a month or less in winter. Don’t water on a fixed calendar; water on dryness. When unsure, wait: these plants tolerate a missed watering far better than a soggy one.
Seasonal changes and dormancy
Most desert succulents and cacti grow in the warm months and rest in winter. During winter dormancy they need very little water — often just enough to stop shrivelling — and overwatering a cold, dormant plant is a common killer. (Some succulents are “winter growers” and flip this; check your species.) Cut back sharply in the off-season.
Soil and pots matter as much as watering
- Fast-draining, gritty mix — a cactus/succulent mix (or a regular mix cut with plenty of perlite, pumice or coarse sand) so water drains freely and roots aren’t left wet. See cactus & succulent soil.
- Drainage holes are essential — never grow these in a pot without them, and don’t leave the pot standing in water.
- Terracotta helps — unglazed clay wicks moisture and dries faster, forgiving of over-enthusiastic watering.
How to water
- Water the soil, not the plant — avoid leaving water sitting in rosettes or crowns, which invites rot.
- Soak until it drains, then empty the saucer.
- Bottom-watering works well and keeps the plant body dry.
Signs you’re overwatering
- Soft, mushy, translucent or yellowing leaves; leaves dropping at a touch.
- A rotting, blackening base or stem.
- Constantly damp soil.
Overwatering leads to root rot — the leading cause of succulent death.
Signs you’re underwatering
- Wrinkled, shrivelled, puckered leaves or stems.
- Leaves feeling soft and deflated (but not mushy) and drooping.
Underwatering is easily fixed with a good soak — these plants plump back up. It’s much safer to err dry.
Common mistakes
- Watering little and often instead of soak-and-dry.
- Growing in regular potting mix or a pot with no drainage.
- Watering on a schedule regardless of dryness.
- Watering dormant plants normally through winter.
- Letting water sit in the rosette/crown.
Quick questions
How often should I water succulents? Only when the soil is completely dry — often every 1–2 weeks in warmth, much less in winter. Water on dryness, not a schedule.
My succulent’s leaves are soft and mushy — too much or too little water? Mushy, translucent leaves mean overwatering; wrinkled, deflated leaves mean underwatering.
Do cacti need any water in winter? Usually very little while dormant — just enough to prevent shrivelling; overwatering cold cacti rots them.
Related guides
- Overwatering vs underwatering · root rot · how to water houseplants
- Cactus & succulent soil · improving drainage
