Acanthus montanus (Nees) T. Anders. [family ACANTHACEAE]. Herbarium. Royal Botanic Gardens, Kew (K). Collection. Useful Plants of West Tropical Africa . EEB Greenhouse Accession Data for Acanthus montanus. Acanthus montanus (Nees) T. Anderson (Acanthaceae) is a shrub widespread in Africa, the Balkans, Romania, Greece and Eastern.
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Winter hardy to USDA Zones where it may be grown in fertile, medium moisture, well-drained soils in full sun to part shade. Plants tolerate a wide range of soils except poorly-drained ones. Plants may not flower well in too much shade. Remove flowering stalks after bloom. Plants are evergreen in warm winter locations, but leaves will show considerable damage in colder winters near the northern edge of the growing range.
Plants can spread invasively by creeping rootstocks, particularly in loose soils. Unwanted spread can be acznthus by root barriers.
West African Plants
Plants generally spread less in the northern parts of their growing range. Plants are best propagated from root cuttings taken in early spring, but may be grown from seed.
Plants can be slow to establish in the garden particularly if started from seedbut become somewhat difficult to eradicate once established since small sections of root left behind can sprout new plants. This plant is not reliably winter hardy to the St.
If attempted outdoors in St. Louis, monatnus should be sited in a protected location and mulched. Acanthus montanus commonly called mountain thistle is a shrubby, spreading perennial that is grown as much for its attractive foliage as for its architecturally bold flower spikes.
This species is a sprawling forest understory plant that is native to tropical western Africa. Deeply lobed, ovate to lanceolate, spiny, dark green leaves to 12″ long with acuminate tips and silvering are both showy and ornamental.
Two-lipped, snapdragon-like, pink to rose flowers bloom in summer on upright flower spikes to 10″ long which rise from the branch ends.
West African Plants – A Photo Guide – Acanthus montanus (Nees) on
Plants grow to ‘ tall when in flower. Genus name comes from the Greek word akantha wcanthus spine in reference to the toothed edges on leaves in some species.
Specific epithet means pertaining to mountains. No serious insect or disease problems. Snails and slugs are occasional visitors that can do substantial damage if left unchecked. Where winter hardy, plants can spread invasively in optimum conditions. Where winter hardy, this is a bold, stately plant that may wcanthus grown as a specimen but is perhaps best montanuw in small groupings.
Plants are not winter hardy to the St. Louis area where they should be grown in greenhouses, conservatories or as houseplants. Fruit Gardening Vegetable Gardening.
Back to Previous Page. Full sun to part shade.
Culture Winter hardy to USDA Zones where it may be grown in fertile, medium moisture, well-drained soils in full sun to part shade. Noteworthy Characteristics Acanthus montanus commonly called mountain thistle is a shrubby, spreading perennial that is grown as much for acanthsu attractive foliage as for its architecturally bold flower spikes.
Problems No serious insect or disease problems. Garden Uses Where winter hardy, this is a bold, stately plant that may be grown as a specimen but is perhaps best sited in small groupings. Missouri Botanical Garden Shaw Blvd. Sign up for our e-newsletter.