Fruit a thin-walled cylindrical to urn-shaped capsule (8–)10–18 mm × 6–11 (–12) mm, enclosed in a woody hypanthium, opening with 3–4 included to slightly exserted valves, many-seeded.
bark rough, soft, spongy, fibrous, red-brown
The heartwood is pale red when freshly cut, turning orange-red or red-brown with age; it is clearly demarcated from the up to 5 cm wide, pale brown sapwood. The grain is interlocked, texture coarse. Quartersawn surfaces sometimes have a ribbon figure of light and dark stripes.
It is one of the most widely planted Eucalyptus species and it has been introduced into many tropical, subtropical, and warm-temperate areas
It is used for reforestation and dune stabilization and it is planted to dry-out swamps, e.g. to combat malaria. It is sometimes used for windbreaks and wayside planting, and it has ornamental value.
Eucalyptus robusta is grown from sea-level up to 1600 m altitude, in areas with a mean annual temperature of 16–28°C, a mean maximum temperature of the warmest month of 25–32°C, a mean minimum temperature of the coldest month of 3–12°C, and an average annual rainfall of 700–1800 mm, with a dry season of 1–4 months.
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