Heliconias

Compact clumps or tall screens

Height splits the range cleanly. The parrot flower types (Heliconia psittacorum and its hybrids) sit at about 1.8m: Lady Di, Parakeet and Golden Torch all hold upright red, orange and gold bracts on compact clumps that suit pots, poolside beds and mass planting at 1m centres. Lady Di is also an excellent cut flower. In the middle, Red Christmas reaches 2m with rich red bracts through the warmer months. The tall growers do double duty as screening: Hanging Lobster Claw drips red and yellow pendent bracts from 2.5m stems, while Hot Rio Nights and the pink bracted Temptress make 3m clumps, and Rauliniana tops the range at 3.5m.

The other split is bract habit. Upright types read as bold cut flower beds; the pendent types, Hanging Lobster Claw, Temptress and the pendula forms, belong where you look into the hanging flowers, beside a path or above a retaining wall.

Where heliconias actually thrive

Every plant here is frost tender without exception. In tropical gardens from Cairns to Darwin and in the subtropics around Brisbane and northern New South Wales they grow fast and flower reliably, alongside the rest of our tropical plant range. Red Christmas stretches into warm temperate coastal gardens if the position never sees frost. South of that, treat them as container plants: a large pot against a warm wall, moved under cover in winter. They want dappled light or morning sun, wind shelter to keep the leaves whole, and rich soil that never dries out. Many, including Golden Torch and Hot Rio Nights, tolerate wet feet, which makes them useful beside ponds and in boggy corners where little else looks lush.

Planting and spacing

Plant in spring once nights are reliably warm, into soil improved with compost. Space the compact types 1m apart and the tall screeners 1.5m apart for a solid wall of foliage within two seasons. They spread steadily by rhizome, so allow room, sink a root barrier, or keep them potted where the bed is tight. Mulch 75mm deep and water two or three times a week through the first summer, more in pots.

Care through the year

Feed generously: a controlled release fertiliser in spring and midsummer keeps the clump pushing new stems. Each stem flowers once, so cut spent stems to the ground and the clump replaces them. Tidy tattered leaves rather than stripping the plant, and in the subtropics ease off watering through winter while growth is slow. Divide crowded clumps in spring every three or four years and pot the spares.

Common questions

Can I grow heliconias in Sydney or Melbourne?

In the ground, only in genuinely frost free Sydney microclimates, and not outdoors in Melbourne. A big pot in a sunny courtyard, moved under cover from May to September, works in both cities. Our tropical climate collection shows what pairs with them in warm gardens.

Why is my clump not flowering?

Usually age or light. Young divisions take a season or two to build the stem mass that flowers, and a clump in deep shade grows leaves instead of bracts. Feed it, give it brighter dappled light and wait.

Do the flowers attract birds?

Yes. The bracts hold nectar rich true flowers and every variety here is bird attracting. Honeyeaters and sunbirds work the clumps daily through the flowering season.

How do I stop them taking over?

The rhizomes creep outward rather than running far, so a 300mm deep root barrier or an annual spade cut around the clump edge keeps them in bounds. In pots they are completely contained.