Watering schedule

How often to water String of Buttons (Crassula perforata) — the schedule

Also called String of Buttons, Necklace Vine, Pagoda Plant, Stacked Crassula.

More about string of buttons

Watering at a glance

Base rhythm	Every 1-2 weeks in growing season; roughly monthly in winter
Spring / summer	Spring and summer: soak fully, then leave it alone until the soil is dry all the way down — usually around every 1-2 weeks.
Autumn	Autumn: ease off as growth slows; stretch the gap noticeably longer than the summer rhythm.
Winter	Winter: water sparingly, roughly once a month or even less in a cool room. The thick leaves carry it through.
Light	Direct sun (at least 4-6 hours)

About String of Buttons

Crassula perforata · also called String of Buttons, Necklace Vine · houseplant

String of buttons is an easy, fast-growing South African succulent whose triangular leaves stack in pairs along square stems, trailing with age. Give it bright direct light, gritty fast-draining soil, and water only when bone dry. Not pet-safe: as a Crassula (jade relative) it is best treated as mildly toxic.

Ideal humidity: Low (around 30-50%)

Watch for — Root rot from overwatering: Black or mushy stems and leaves that drop at a touch mean the roots are rotting. Always let soil dry fully, use gritty mix and a drained pot, and water less in winter. Salvage healthy top cuttings if the base is lost.

The watering schedule, season by season

String of Buttons stores water in its thick leaves and stems, so when in doubt, wait — it survives drought far better than soggy soil. The base rhythm for string of buttons is every 1-2 weeks in growing season; roughly monthly in winter, but the real interval moves with the season, the light and the pot — so treat the figures below as a starting point and always confirm with the plant itself.

Spring & summer (active growth): Spring and summer: soak fully, then leave it alone until the soil is dry all the way down — usually around every 1-2 weeks.
Autumn (slowing down): Autumn: ease off as growth slows; stretch the gap noticeably longer than the summer rhythm.
Winter (rest / dormancy): Winter: water sparingly, roughly once a month or even less in a cool room. The thick leaves carry it through.

Use the soak-and-dry method: water thoroughly until it runs from the drainage hole, then let the soil dry out completely before watering again. As a leaf-succulent it tolerates drought well. Shrivelled lower leaves signal underwatering; yellow, soft, easily-detached leaves signal overwatering and root rot. Cut back sharply in winter dormancy.

Want this turned into a live reminder that adjusts to your home and the weather? The Growli watering calculator takes your pot size, light and season and returns a starting interval for string of buttons in seconds.

How to tell string of buttons needs water

A calendar is the worst way to water string of buttons. Check the plant and the soil instead — for this species, look for these signals in order:

The lower or oldest leaves feel slightly soft or look a touch wrinkled.
The pot is noticeably light when lifted.
Soil is dry several centimetres down, not just at the surface.

The most reliable single check is the first one on that list. When two signals agree, water; when they disagree, wait a day and look again — under-watering string of buttons for a day is almost always safer than over-watering it.

Overwatering vs underwatering string of buttons

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For string of buttons specifically:

Signs you are overwatering

Leaves turn translucent, yellow, soft and mushy — classic overwatering.
Lower stem darkens or goes squishy at soil level.
Whole rosettes or sections drop at the lightest touch.

Signs you are underwatering

Leaves pucker, wrinkle or curl inward — a harmless thirst signal that reverses fast after a soak.
Older leaves dry crisp from the tips first.

Overwatering is the number-one killer of string of buttons. The thick leaves are a water tank — a slightly thirsty plant recovers in a day; a waterlogged one rots from the roots up.

Water quality notes

Tap water is generally fine for string of buttons; the soak-and-dry rhythm matters far more than water type.

Seasonal and environmental adjusters

Every figure above shifts with the conditions in your home. For string of buttons, the levers that matter most are:

A gritty, free-draining mix is essential — ordinary potting soil holds too much water for this plant.
Terracotta dries faster and is more forgiving than plastic or glazed ceramic.
More light and warmth speed drying, so the interval shortens in peak summer — always check, never assume.

Pot choice is part of this too — work out the right size with the pot size calculator, since a pot that is too big stays wet long enough to rot the roots of string of buttons.

String of Buttons watering — frequently asked questions

How often should I water string of buttons?

Water string of buttons every 1-2 weeks in growing season; roughly monthly in winter. Spring and summer: soak fully, then leave it alone until the soil is dry all the way down — usually around every 1-2 weeks. Winter: water sparingly, roughly once a month or even less in a cool room. The thick leaves carry it through.

How do I know when string of buttons needs water?

The lower or oldest leaves feel slightly soft or look a touch wrinkled. The pot is noticeably light when lifted. Soil is dry several centimetres down, not just at the surface. The single most reliable test for string of buttons is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered string of buttons look like?

Leaves turn translucent, yellow, soft and mushy — classic overwatering. Lower stem darkens or goes squishy at soil level. Whole rosettes or sections drop at the lightest touch. Overwatering is the number-one killer of string of buttons. The thick leaves are a water tank — a slightly thirsty plant recovers in a day; a waterlogged one rots from the roots up.

What are the signs of an underwatered string of buttons?

Leaves pucker, wrinkle or curl inward — a harmless thirst signal that reverses fast after a soak. Older leaves dry crisp from the tips first.

Can I use tap water on string of buttons?