"Ageratum houstonianum" syn. "Ageratum mexicanum" Hort. is a cool-season annual plant often grown as bedding in gardens. The plant grows to 0.3–1 m high, with ovate to triangular leaves 2–7 cm long, and blue flowers. The flower heads are borne in dense corymbs. The ray flowers are threadlike, leading to the common name.
Similar species: Asterales
By Patomarazul
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Uploaded Jan 27, 2024. Captured Aug 14, 2023 15:52 in Kruidtuin, Kapucijnenvoer 30, 3000 Leuven, Belgium.
