Repotting guide

When & how to repot Adromischus Trigynus (Adromischus trigynus)

Also called calico hearts adromischus, heart leaf adromischus.

More about adromischus trigynus

About Adromischus Trigynus

Adromischus trigynus · also called calico hearts adromischus, heart leaf adromischus · houseplant

Adromischus trigynus is a small South African succulent with broad, flattened heart- to egg-shaped grey-green leaves boldly spotted in reddish-purple. Closely allied to calico hearts, it stays compact and slow-growing, asking for bright light, sharply drained gritty soil and sparing water. Its striking spotted foliage makes it a favourite dish-garden and windowsill succulent.

Mature size: About 8-10 cm (3-4 in) tall and 10-15 cm (4-6 in) wide as a clump.

Watch for — Faded spots and stretching: Inadequate light dulls the purple markings and elongates the stems. Move to a brighter, sunnier window to keep the foliage compact and well-coloured.

How to tell adromischus trigynus needs repotting

Repotting on a calendar is less reliable than reading the plant. For adromischus trigynus, 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 adromischus trigynus

Every 2–3 years, into bone-dry mix. Adromischus Trigynus's growth habit — slow-growing, low clumping succulent forming clusters of flat, rounded leaves on short stems. mature plants produce slender stalks of small tubular pinkish flowers. — sets the pace. Adromischus trigynus is a small South African succulent with broad, flattened heart- to egg-shaped grey-green leaves boldly spotted in reddish-purple. Closely allied to calico hearts, it stays compact and slow-growing, asking for bright light, sharply drained gritty soil and sparing water. Its striking spotted foliage makes it a favourite dish-garden and windowsill succulent.

What size pot to step adromischus trigynus up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Adromischus Trigynus 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 adromischus trigynus

Spring or summer, while adromischus trigynus 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 adromischus trigynus

Repot dry. Do not water adromischus trigynus 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 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 adromischus trigynus 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 adromischus trigynus 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 adromischus trigynus

Adromischus Trigynus wants gritty cactus/succulent mix. Use a fast-draining blend of cactus compost with roughly half added pumice, perlite or coarse grit. The shallow roots rot in soggy soil, so drainage is critical. A shallow terracotta pot dries faster and suits the low, spreading form. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting adromischus trigynus — frequently asked questions

How often should you repot adromischus trigynus?

Every 2–3 years, into bone-dry mix for adromischus trigynus. Repot adromischus trigynus every 2–3 years into a snug pot of gritty 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 adromischus trigynus need?

When is the best time of year to repot adromischus trigynus?

Should you water adromischus trigynus after repotting?

No — not straight away. Repot adromischus trigynus 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 adromischus trigynus after repotting?

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