General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
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 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F)
Maximum recommended zone: Zone 9b
Plant Height: 18 to 24 inches
Plant Spread: 8 to 12 inches
Leaves: Deciduous
Fruit: Showy
Flowers: Showy
Flower Color: Yellow
Bloom Size: 1"-2"
Flower Time: Summer
Late summer or early fall
Uses: Cut Flower
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Propagation: Seeds: Needs specific temperature: 60ºF - 70ºF
Days to germinate: 7 to 14 days
Depth to plant seed: Shallowly sow, covering with a thin layer of soil.

Image
Common names
  • Centaurea
  • Yellow Knapweed

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Location: St Louis - MoBOT
Date: 2023-06-08

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