Ageratina altissima 'Chocolate' (snakeroot 'Chocolate') is a member of the Asteraceae family. This perennial exhibits a bushy growth habit and is characterised by its deciduous foliage. It has a hardiness rating of hardy (cold winter [-15 to -10ºc]) and is hardy throughout most of the UK, even in severe winters. May not withstand open or exposed sites or central/northerly locations, with many evergreens suffering foliage damage and plants in pots being at increased risk.
When fully mature, Ageratina altissima 'Chocolate' can reach an ultimate height of 0.5–1 metres and a spread of 0.5–1 metres. For optimal growth, it prefers a west–facing or east–facing aspect and a sheltered position. It thrives best in chalk, clay, or loam soil types and should be placed in partial shade.
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