invasive
Every article and hero in Arborpedia that touches this subject.
№ 005TreesAfrican Tulip Tree: The Flame of the Forest That Squirts Water
A blazing scarlet-flowered giant whose unopened buds hold water children squirt at each other — planted worldwide for its beauty and now one of the worst invaders of the Pacific islands.
Jul 2026Read →
№ 013TreesAmur Cork Tree: The Corky-Barked Medicine That Turned Invasive
An East Asian tree with thick, soft, corky bark and a place among the fundamental herbs of Chinese medicine — planted widely as a tough ornamental, and now a spreading invader of North American woods.
Jul 2026Read →
№ 047TreesBlack Locust: Rot-Proof Timber, Nitrogen, and a Bad Reputation
A nitrogen-fixing tree with fence posts that outlast concrete — and one of the most aggressively invasive trees in Europe.
Jul 2026Read →
№ 082TreesChinaberry: The Bead Tree That Feeds Insects to Nothing
A fast, pretty, lilac-flowered relative of neem — carrying the same natural insecticide, strung into rosary beads for centuries, poisonous to people, and now a widespread invader of warm countrysides.
Jul 2026Read →
№ 348TreesPepper Tree: Pink Peppercorns and a Pretty Invader
Graceful, weeping South American trees whose rose-coloured berries are sold as 'pink peppercorns' — kin to the cashew, beloved as ornamental shade, and now among the worst invaders of warm coasts and wetlands.
Jul 2026Read →
№ 483TreesTamarisk: The Feathery Tree That Salts the Ground and Drinks the River
A wispy pink-flowered desert tree that survives on salt water, pumps salt onto the soil to poison its rivals, and became the great water-guzzling invader of the American West.
Jul 2026Read →
№ 497TreesTree of Heaven: The Invader That Grows in Brooklyn
A fast, tough, foul-smelling Asian tree that poisons its neighbours, resprouts from any cut, and now hosts the pest threatening whole crops.
Jul 2026Read →