Repotting guide

When & how to repot Toad Tree (Tabernaemontana elegans)

Also called Toad Tree, Toad Poison Bush, Laeveldse Paddaboom.

More about toad tree

About Toad Tree

Tabernaemontana elegans · also called Toad Tree, Toad Poison Bush · tropical

A deciduous to semi-deciduous African shrub or small tree prized for its dainty white fragrant flowers and extraordinary warty, toad-skin-textured paired fruit. Native to eastern Africa from Somalia to South Africa, it thrives in bushveld and coastal forest margins. Hardy for its genus and attractive as a seasonal specimen tree or large container subject.

Mature size: 1.5–5 m in cultivation (5–16 ft); occasionally to 12 m in the wild with trunk diameter 5–30 cm

How to tell toad tree needs repotting

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

Thick roots out of the drainage holes, or circling the surface and lifting the plant.
The pot dries out unusually fast and toad tree wilts between waterings it used to shrug off.
The plant is visibly top-heavy and tips over easily.
Stalled growth and small new leaves over a full season — though with a big specimen, top-dressing is often the better first response before a full repot.

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 toad tree

Every 2–3 years; top-dress in the in-between years. Toad Tree's growth habit — deciduous to semi-deciduous shrub or small tree with a spreading, irregular crown; produces paired follicle fruit — sets the pace. A deciduous to semi-deciduous African shrub or small tree prized for its dainty white fragrant flowers and extraordinary warty, toad-skin-textured paired fruit. Native to eastern Africa from Somalia to South Africa, it thrives in bushveld and coastal forest margins. Hardy for its genus and attractive as a seasonal specimen tree or large container subject.

What size pot to step toad tree up to

Move up exactly one pot size. A heavy toad tree dropped into a vastly bigger pot sits in a reservoir of wet soil its roots cannot reach, which rots them and destabilises the plant. In the years between repots, lift off and replace the top 3–5 cm of soil (top-dressing) instead — it refreshes nutrients without the shock of a full repot.

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 toad tree

Early spring, just as new growth restarts, is the ideal window for toad tree. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting toad tree

Consider top-dressing first. If toad tree is not badly root-bound, scrape off and replace the top 3–5 cm of soil instead — far less shock for a big plant that hates moving.
Get help and one size up. For a full repot, choose a pot just one size larger. A heavy plant needs two people and a stable, free-draining pot.
Ease it out on its side. Lay the plant down, slide the pot off, and gently loosen the outer roots. Do not bare-root a mature specimen.
Repot at the same depth. Add fresh versatile; tolerates sandy, loamy, or clay soils with good drainage beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
Water and leave it put. Water thoroughly, then leave toad tree in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave toad tree in exactly the same spot and light it was in before — moving and repotting at the same time is what makes a big specimen drop leaves. Water it in well, then let the top of the soil dry before watering again so the larger volume of fresh soil does not stay sodden. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for toad tree

Toad Tree wants versatile; tolerates sandy, loamy, or clay soils with good drainage. Adaptable to a wide range of soil textures including sandy, loam, or clay at neutral pH. In very sandy soils, incorporate compost to improve water retention and nutrient availability. Good drainage is essential — does not tolerate waterlogged conditions. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting toad tree — frequently asked questions

How often should you repot toad tree?

Every 2–3 years; top-dress in the in-between years for toad tree. Fully repot toad tree only every 2–3 years; in the in-between years just top-dress the top 3–5 cm of soil. Step up one pot size in spring with versatile; tolerates sandy, loamy, or clay soils with good drainage. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does toad tree need?

When is the best time of year to repot toad tree?

Should you top-dress or fully repot toad tree?

For a big, heavy toad tree, top-dressing — replacing the top 3–5 cm of soil — is the gentler option most years, with a full repot only every 2–3 years. A mature specimen sulks and drops leaves when fully repotted, so do it as rarely as the roots allow.

Should you fertilise toad tree after repotting?

Not immediately. Wait about 4 weeks after repotting toad tree. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.