General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 7a -17.8 °C (0 °F) to -15 °C (5 °F)
Plant Height: 4 to 6 feet
Plant Spread: 2 to 3 feet
Leaves: Other: Evergreen in warm winter zones.
Flowers: Showy
Flower Color: Pink
Flower Time: Summer
Underground structures: Rhizome
Uses: Will Naturalize
Wildlife Attractant: Bees
Resistances: Humidity tolerant
Propagation: Other methods: Cuttings: Root
Miscellaneous: With thorns/spines/prickles/teeth
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern
Image
Common names
  • Mountain Thistle
  • Bear's Breeches

Photo Gallery
Location: West Sumatera Indonesia
Date: 1 September 2019
Location: Botanical Garden of Utrecht
Date: 2014-04-06
Location: BG München-Nymphenburg
Date: 2018-03-11
Location: St Louis - Missouri Botanical Garden
Date: 2024-01-03

Date: 2015-08-26
Location: MOBOT -   St Louis
Date: 2013-02-25

Date: 2015-08-26
Location: Osaka Prefectural Flower Garden, Osaka, Japan
Date: April 26, 2008
Photo by KENPEI
Location: Orto Botanico di Cagliari - Sardinia
Date: 2017-09-19
Location: Botanischer Garten Berlin
Date: 2023-05-15

Date: 2015-08-26

Date: 2015-08-26
Location: My garden in N E Pa. 
Date: 2016-05-02
Location: MOBOT -   St Louis
Date: 2013-02-25
Location: Missouri Botanical Garden (MOBOT) - St Louis
Date: 2013-02-25
Location: Sumatera Indonesia
Date: 2018-01-12
Location: MOBOT -   St Louis
Date: 2013-02-25
Location: Osaka Prefectural Flower Garden, Osaka, Japan
Date: April 26, 2008
Photo by KENPEI
Comments:
  • Posted by Marilyn (Kentucky - Zone 6a) on May 25, 2013 6:17 AM concerning plant:
    "Acanthus montanus, also known as Bear's Breech or Mountain Thistle, is a thinly branched perennial with basal clusters of oblong to lance-shaped glossy, dark green leaves reaching up to 12 inches (30 cm) long. The leaves have silver marks and wavy margins. It reaches up to 6 feet (1.8 m) tall and about 24 inches (61 cm) wide. Spikes of pale pink flowers appear summer to fall. It prefers shady situations and occasional deep watering, but tolerates sunny, dry situations too. Its aggressive roots make this plant perfect for slopes."

    Taken from wikipedia's page at: http://en.wikipedia.org/wiki/A...

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