General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Dry
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Plant Height: 12-16 inches
Plant Spread: 12-16 inches
Fruit: Indehiscent
Fruiting Time: Summer
Late summer or early fall
Flowers: Showy
Flower Color: Yellow
Other: Bright green bracts surrounding yellow to yellowish-green flowers.
Bloom Size: Under 1"
Flower Time: Summer
Late summer or early fall
Uses: Cut Flower
Dried Flower
Propagation: Seeds: Provide light
Self fertile
Needs specific temperature: 65ºF-70ºF
Days to germinate: 2 to 4 weeks
Depth to plant seed: Shallowly sow at depth of approximately 1/8 inch.
Pollinators: Various insects

Image
Common names
  • Hare's Ear
  • Roundleaf Thorow Wax
  • Thoroughwax

Photo Gallery
Location: Columbus, Ohio USA, Zone 6b
Date: 2/18/21
Location: My garden in Belgium
Date: 2011-08-06
Location: Wallington Hall, Northumberland UK
Date: 2014-06-25

Date: 2003-05-20
Steven J. Baskauf http://bioimages.vanderbilt.edu/

Courtesy Outsidepride
  • Uploaded by Joy

Courtesy Outsidepride
  • Uploaded by Joy
Location: My garden in Belgium
Date: 2011-08-06

Date: 2003-05-20
Steven J. Baskauf http://bioimages.vanderbilt.edu/

Courtesy Outsidepride
  • Uploaded by vic

Date: 2003-05-20
Steven J. Baskauf http://bioimages.vanderbilt.edu/
Comments:
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Feb 13, 2012 10:15 AM concerning plant:
    Bupleurum rotundifolium is a great foliage plant with green flowers that resemble Euphorbias and leaves that resemble those of Eucalyptus.

    If grown from seed, germination can be erratic.

    They contrast well with other flowers and are great in bouquets.

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