Repotting guide

When & how to repot Moonstones (Pachyphytum oviferum)

Also called Moonstones, Moonstone succulent, Pink moonstone, Sugaralmond plant, Sugared-almond plant.

More about moonstones

About Moonstones

Pachyphytum oviferum · also called Moonstones, Moonstone succulent · houseplant

Moonstones (Pachyphytum oviferum) is a compact Mexican succulent prized for plump, pastel, egg-shaped leaves dusted in a powdery wax called farina. Give it bright light, gritty fast-draining soil, and soak-and-dry watering. It is not individually ASPCA-listed, so treat it as mildly toxic and check with your vet.

Mature size: Compact: about 10 to 20 cm (4 to 8 in) tall and up to 10 to 30 cm (4 to 12 in) wide as it clumps. RHS gives an ultimate height and spread of 0.1 to 0.5 m, reached in 1 to 2 years. USDA hardiness zones 10a to 11b.

Watch for — Root and stem rot from overwatering: The most common killer. Mushy, translucent, or blackening leaves and stems mean too much water or poorly draining soil. Use gritty mix, a pot with drainage, and let soil dry fully between waterings.

How to tell moonstones needs repotting

Repotting on a calendar is less reliable than reading the plant. For moonstones, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot moonstones

Every 2–3 years, into bone-dry mix. Moonstones's growth habit — slow-growing, low rosette-forming succulent. thick, oval, finger-like leaves spiral around short stems and are coated in a chalky, frosted wax (farina). it offsets to form clumps and can trail or sprawl with age. mature plants send up arching stalks of bell-shaped red flowers within greyish outer petals in winter to spring. — sets the pace. Moonstones (Pachyphytum oviferum) is a compact Mexican succulent prized for plump, pastel, egg-shaped leaves dusted in a powdery wax called farina. Give it bright light, gritty fast-draining soil, and soak-and-dry watering. It is not individually ASPCA-listed, so treat it as mildly toxic and check with your vet.

What size pot to step moonstones up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Moonstones stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot moonstones

Spring or summer, while moonstones is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting moonstones

Repot dry. Do not water moonstones for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty gritty, fast-draining cactus and succulent mix ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set moonstones at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep moonstones completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for moonstones

Moonstones wants gritty, fast-draining cactus and succulent mix. Use a sandy, porous, sharply draining medium, for example cactus/succulent soil cut roughly 50/50 with pumice, perlite, or coarse sand. RHS lists its preferred soil simply as sand, well-drained. Always plant in a pot with drainage holes; standing moisture is the main killer. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting moonstones — frequently asked questions

How often should you repot moonstones?

Every 2–3 years, into bone-dry mix for moonstones. Repot moonstones every 2–3 years into a snug pot of gritty, fast-draining cactus and succulent mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does moonstones need?

When is the best time of year to repot moonstones?

Should you water moonstones after repotting?

No — not straight away. Repot moonstones into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise moonstones after repotting?

Not immediately. Wait about 3 weeks after repotting moonstones. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.