Repotting guide

When & how to repot Cup of gold vine (Solandra maxima)

Also called Cup of gold vine, Golden chalice vine, Chalice vine, Hawaiian lily.

More about cup of gold vine

About Cup of gold vine

Solandra maxima · also called Cup of gold vine, Golden chalice vine · tropical

Cup of gold vine is a spectacular, fast-growing evergreen climber from Mexico and Central America, bearing enormous — up to 25 cm — golden-yellow chalice-shaped flowers with a coconut fragrance and purple-striped interior. A subtropical showstopper for frost-free gardens, it quickly smothers pergolas and walls. All parts are toxic, containing tropane alkaloids. Requires heavy pruning to control vigour.

Mature size: 9–12 m tall (occasionally to 15 m in ideal conditions); spread 3–5 m

How to tell cup of gold vine needs repotting

Repotting on a calendar is less reliable than reading the plant. For cup of gold vine, 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 cup of gold vine 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 cup of gold vine

Every 2–3 years; top-dress in the in-between years. Cup of gold vine's growth habit — vigorous, woody evergreen climbing shrub — sets the pace. Cup of gold vine is a spectacular, fast-growing evergreen climber from Mexico and Central America, bearing enormous — up to 25 cm — golden-yellow chalice-shaped flowers with a coconut fragrance and purple-striped interior. A subtropical showstopper for frost-free gardens, it quickly smothers pergolas and walls. All parts are toxic, containing tropane alkaloids. Requires heavy pruning to control vigour.

What size pot to step cup of gold vine up to

Move up exactly one pot size. A heavy cup of gold vine 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 cup of gold vine

Early spring, just as new growth restarts, is the ideal window for cup of gold vine. 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 cup of gold vine

Consider top-dressing first. If cup of gold vine 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 fertile, well-drained loam with added organic matter 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 cup of gold vine in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave cup of gold vine 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 cup of gold vine

Cup of gold vine wants fertile, well-drained loam with added organic matter. Plant in rich, free-draining soil with plenty of incorporated compost or aged manure. Tolerates a range of soil types but performs best in loam at pH 6.0–7.0. Avoid heavy clay or poorly draining sites. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting cup of gold vine — frequently asked questions

How often should you repot cup of gold vine?

Every 2–3 years; top-dress in the in-between years for cup of gold vine. Fully repot cup of gold vine 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 fertile, well-drained loam with added organic matter. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does cup of gold vine need?

When is the best time of year to repot cup of gold vine?

Should you top-dress or fully repot cup of gold vine?

For a big, heavy cup of gold vine, 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 cup of gold vine after repotting?

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