Repotting guide

When & how to repot Hooded-leaf Pelargonium (Pelargonium cucullatum)

Also called Hooded-leaf Pelargonium, Tree Pelargonium, Wild Malva.

More about hooded-leaf pelargonium

About Hooded-leaf Pelargonium

Pelargonium cucullatum · also called Hooded-leaf Pelargonium, Tree Pelargonium · flowering

Pelargonium cucullatum is a large, woody-stemmed shrub from the coastal fynbos and strandveld of South Africa's Western Cape, notable for its cupped (hooded), aromatic leaves and showy pink to mauve flowers. It is an important parent species in the breeding of regal (Martha Washington) pelargonium hybrids. Grow in full sun with excellent drainage and very sparing water; excessive moisture rots the woody base. Toxic to cats, dogs, and horses.

Mature size: Up to 1–2 m tall and wide outdoors in frost-free climates; container-grown plants kept to 40–80 cm with pruning

Watch for — Pelargonium rust (Puccinia pelargonii-zonalis): Yellow spots on upper leaf surfaces with rings of brown spores on the undersides; common in humid, poorly ventilated conditions. Remove affected leaves promptly, improve airflow, and avoid wetting foliage.

How to tell hooded-leaf pelargonium needs repotting

Repotting on a calendar is less reliable than reading the plant. For hooded-leaf pelargonium, 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 hooded-leaf pelargonium 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 hooded-leaf pelargonium

Every 2–3 years; top-dress in the in-between years. Hooded-leaf Pelargonium's growth habit — upright, much-branched evergreen shrub with thick, woody stems and slightly sticky, aromatic, cupped leaves; can reach shrub proportions if given space. — sets the pace. Pelargonium cucullatum is a large, woody-stemmed shrub from the coastal fynbos and strandveld of South Africa's Western Cape, notable for its cupped (hooded), aromatic leaves and showy pink to mauve flowers. It is an important parent species in the breeding of regal (Martha Washington) pelargonium hybrids. Grow in full sun with excellent drainage and very sparing water; excessive moisture rots the woody base. Toxic to cats, dogs, and horses.

What size pot to step hooded-leaf pelargonium up to

Move up exactly one pot size. A heavy hooded-leaf pelargonium 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 hooded-leaf pelargonium

Early spring, just as new growth restarts, is the ideal window for hooded-leaf pelargonium. 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 hooded-leaf pelargonium

Consider top-dressing first. If hooded-leaf pelargonium 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 free-draining, sandy, slightly alkaline loam 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 hooded-leaf pelargonium in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave hooded-leaf pelargonium 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 hooded-leaf pelargonium

Hooded-leaf Pelargonium wants free-draining, sandy, slightly alkaline loam. A loam-based compost (John Innes No. 2) with 20–30% coarse grit or perlite gives ideal drainage. Avoid rich, peat-heavy mixes that retain moisture; roots must dry between waterings. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting hooded-leaf pelargonium — frequently asked questions

How often should you repot hooded-leaf pelargonium?

Every 2–3 years; top-dress in the in-between years for hooded-leaf pelargonium. Fully repot hooded-leaf pelargonium 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 free-draining, sandy, slightly alkaline loam. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does hooded-leaf pelargonium need?

When is the best time of year to repot hooded-leaf pelargonium?

Should you top-dress or fully repot hooded-leaf pelargonium?

For a big, heavy hooded-leaf pelargonium, 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 hooded-leaf pelargonium after repotting?

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