Heptapleurum (Schefflera) arboricola 'Gerda'

Heptapleurum (Schefflera) actinophyllum 'Amate'

Heptapleurum actinophyllum 'Amate' grows much larger than compact dwarf umbrella plants. It has broad glossy leaf clusters held on long petioles, with several leathery green leaflets spreading out in a wide radial shape. In a warm, bright room with enough root space, 'Amate' can become a tall indoor tree of around 300 cm.

Young plants are upright and leafy. As the stems mature, they harden into a woody frame and the canopy rises, so the plant starts to look more like a small indoor tree than a bushy shrub. Light pruning keeps the upper growth fuller and stops older stems from becoming bare lower down.

Large umbrella leaves and a woody indoor frame

• Growth habit: Fast-growing evergreen shrub to small indoor tree.
• Canopy: Rounded canopy with strong upright stems.
• Leaves: Large palmately compound leaves with glossy green leaflets.
• Petioles: Long petioles hold the foliage away from the stems.
• Stem development: Young green stems mature into woody branches.
• Space: Needs more room than dwarf umbrella cultivars.
• Flowering: Dark red flowers occur in nature, but indoor flowering is rare.
• Indoor size: Can reach around 300 cm over time.

Tropical forest growth in a room

Heptapleurum actinophyllum grows in tropical northern Australia and southern New Guinea, where it develops as a scrambling tree in warm, wet forest conditions. Indoors, 'Amate' keeps that upright energy and needs space around the broad canopy.

After watering, the substrate should drain freely. Dense soil that stays wet for days damages the roots quickly, especially in cooler rooms. If older stems become too tall or bare, cut above a leaf node while the plant is making new leaves.

Space, drainage and pruning for 'Amate'

• Light: Bright filtered light gives the canopy stronger, closer growth. Harsh midday sun through glass can burn leaves.
• Watering: Water thoroughly once the upper part of the substrate has dried. Empty standing water from the outer pot or saucer.
• Substrate: Use a loose mix with organic matter plus bark, pumice or another mineral component.
• Temperature: Warm rooms above 18 °C suit the roots best. Cold, wet substrate causes stress quickly.
• Air and humidity: Normal indoor humidity is enough for most homes. Avoid stale damp corners where leaves stay wet for hours.
• Feeding: Use diluted balanced fertiliser while the plant is growing.
• Pruning: Cut above a leaf node to reduce height or encourage side shoots.
• Repotting: Move up gradually when roots fill the pot or the plant dries out too fast.
• Outdoor summer: Place outside only during warm, frost-free weeks in bright shade.

Leaf drop, wet roots and pests

• Sudden leaf drop: A move, cold draft, drought or overwatering may be behind it.
• Soft stems or sour substrate: The roots are staying wet too long.
• Leaf spots or soft rot: Persistently wet substrate and stale air make these more likely.
• Brown patches: Direct sun through glass, cold window contact or a dry root ball can mark the leaves.
• Sticky leaves, bumps, webbing or pale speckling: Inspect for scale insects or spider mites.
• Small insects on soft new growth: Aphids or thrips may have settled there.
• Wide gaps between leaves: Move the plant into brighter filtered light.

Pets and handling

Keep 'Amate' away from pets and children who chew foliage. Leaves and stems can irritate the mouth and digestive tract if eaten, and fresh sap may irritate sensitive skin after pruning.