Knotweed (Bistorta affinis 'Superba')

Botanical names:
Bistorta affinis Accepted
Persicaria affinis Synonym

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 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 7b
Plant Height: 2 - 3 feet
Plant Spread: 1 - 2 feet
Leaves: Good fall color
Semi-evergreen
Flowers: Showy
Flower Color: Pink
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Fall
Underground structures: Rhizome
Suitable Locations: Bog gardening
Uses: Groundcover
Cut Flower
Will Naturalize
Wildlife Attractant: Birds
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Drought tolerant
Propagation: Other methods: Cuttings: Stem
Division
Containers: Needs excellent drainage in pots

Discussion Threads about this plant
Thread Title Last Reply Replies
What is this flower / Plant? by Patty Sep 19, 2016 11:41 PM 2
Please ID this plant by ek0001 May 29, 2016 5:03 PM 8
Favourite perennials in my Canadian garden by SunnyBorders Jan 14, 2020 10:13 AM 1,164

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