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Mountain Ru

Casuarina junghuhniana

Also called Red Tip Ru

In Singapore: Mountain Ru, Red-tipped Ru, Horsetail Tree, Ru Ronan (Grown in Singapore)

Mountain Ru
Photo: Christian Advs Sltg, CC BY-SA 3.0

Mountain ru is an evergreen tree of up to 15–35 m that grows as a straight, knotless trunk with a narrow canopy. It is grown as an ornamental and as a windbreak, and it fixes nitrogen through a root partnership with Frankia bacteria.

Family
Casuarinaceae (Casuarin family)
Grows as
Tree
Light
Full sun
Water
Water regularly while establishing, then allow the soil to dry slightly between waterings.
Soil
Well-drained soil, tolerant of poor and sandy soils.
Temperature
Wet tropical climate; frost-sensitive, protect below 5 °C.
How easy
Easy
Native range
Jawa to Lesser Sunda Is.
Climate
wet tropical

About

Casuarina junghuhniana, the mountain ru or red-tipped ru, is a tree in the family Casuarinaceae that originated in Java and the Lesser Sunda Islands. The species has been introduced to Pakistan and Bangladesh.

Where it grows

Casuarina junghuhniana is native to Java and the Lesser Sunda Islands. The species has been introduced to Pakistan and Bangladesh as a restoration of degraded forest areas.

Uses

Popularly grown as an ornamental plant and a windproof line. The wood of this tree is used for shingles, fencing, and is said to make excellent hot-burning firewood.

Other Casuarina plants

River sheoak · Beach sheoak · Gray sheoak · Sheoak

[Contains information from Leaf Area Index (LAI) and Heritage Trees from data.gov.sg (National Parks Board), made available under the terms of the Singapore Open Data Licence version 1.0]

Text excerpted from the Wikipedia article Casuarina junghuhniana by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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