Geranium maderense, known as giant herb-Robert or the Madeira cranesbill, is a species of flowering plant in the Geraniaceae family, native to the island of Madeira. Growing to 120–150 cm (47–59 in) tall and wide, it is a mound-forming evergreen perennial with deeply divided ferny leaves. Spectacular pink flowers on hairy red stems are produced in large panicles in summer. It is grown as an ornamental plant in temperate regions, and has gained the Royal Horticultural Society's Award of Garden Merit.
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
- "Geranium maderense AGM". RHS Plant Finder. Royal Horticultural Society. Retrieved 27 July 2013.
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"The Madeira Island Geranium:Geranium maderense" (PDF). university of california davis botanical conservatory. Retrieved 12 June 2013.
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