Repotting guide

When & how to repot Cooper's Haworthia (Haworthia cooperi)

Also called Cooper's Haworthia, Window Haworthia, Pussy Foot, Cushion Aloe, Bristle Haworthia.

More about cooper's haworthia

About Cooper's Haworthia

Haworthia cooperi · also called Cooper's Haworthia, Window Haworthia · houseplant

Cooper's Haworthia is a tiny, slow-growing South African succulent forming clumps of plump rosettes with translucent "windowed" leaf tips. Give it bright indirect light, gritty fast-draining soil, and infrequent deep watering. It is ASPCA-listed as non-toxic to cats and dogs, making it a safe, low-fuss choice for pet households.

Mature size: Very small: roughly 5-10 cm (2-4 in) tall, spreading slowly into wider clumps as it offsets.

Watch for — Translucent, mushy or rotting leaves: The most common issue, caused by overwatering or soil that stays wet. Let the mix dry fully between waterings, use a gritty fast-draining medium and a pot with drainage, and cut back hard in winter.

How to tell cooper's haworthia needs repotting

Repotting on a calendar is less reliable than reading the plant. For cooper's haworthia, 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 cooper's haworthia

Every 2–3 years, into bone-dry mix. Cooper's Haworthia's growth habit — slow-growing, clump-forming evergreen succulent. it produces low, stemless rosettes of fleshy, rounded leaves with translucent windowed tips, and gradually offsets to form tight cushions or colonies over time. — sets the pace. Cooper's Haworthia is a tiny, slow-growing South African succulent forming clumps of plump rosettes with translucent "windowed" leaf tips. Give it bright indirect light, gritty fast-draining soil, and infrequent deep watering. It is ASPCA-listed as non-toxic to cats and dogs, making it a safe, low-fuss choice for pet households.

What size pot to step cooper's haworthia up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Cooper's Haworthia 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 cooper's haworthia

Spring or summer, while cooper's haworthia 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 cooper's haworthia

Repot dry. Do not water cooper's haworthia 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/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 cooper's haworthia 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 cooper's haworthia 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 cooper's haworthia

Cooper's Haworthia wants gritty, fast-draining cactus/succulent mix. Use a commercial cactus and succulent mix, or amend standard potting soil with plenty of perlite, pumice, or coarse sand (roughly 50/50) for sharp drainage. Always plant in a pot with drainage holes; an unglazed terracotta pot helps excess moisture escape and guards against root rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting cooper's haworthia — frequently asked questions

How often should you repot cooper's haworthia?

Every 2–3 years, into bone-dry mix for cooper's haworthia. Repot cooper's haworthia every 2–3 years into a snug pot of gritty, fast-draining cactus/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 cooper's haworthia need?

When is the best time of year to repot cooper's haworthia?

Should you water cooper's haworthia after repotting?

No — not straight away. Repot cooper's haworthia 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 cooper's haworthia after repotting?

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