Native primarily to Australia. At first glance, these look something like pines; their thin, jointed, green branches look like long pine needles. True leaves are inconspicuous. These trees tolerate dry or wet soil, salinity, heat, and wind, and they’re hardy to 15°F (–9°C). Especially useful in desert areas, where they are often confused with Athel tamarisk (Tamarix aphylla) because of similar foliage—but the casuarinas have conelike fruit. Cones range from 1/4–1 in. long. Little pruning is required.Casuarina cunninghamiana
Largest and tallest species. Grows to 70 ft. tall, 30 ft. wide. Finest texture, with dark green branches.
Originally hybrids between oranges and pummelos, grapefruit trees can reach to 25–30 ft. tall (m...
Vine-shrub from Brazil. Vigorous growth to 10 ft. tall and wide. Bears arrowlike, 1 1/2–3-i...
Vigorous, upright, thorny tree to 20–25 ft. tall; also available on dwarf rootstock (‘Dwar...