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Oxypetalum coeruleum

Common Name(s):

Previously known as:

  • Tweedia versicolor
Phonetic Spelling
oks-ee-PET-al-um ko-er-OO-lee-um
Description

For those who love blue flowers, Tweedia is a relatively new introduction related to our milkweeds. It perennializes in the warmer Piedmont and coastal plain, but can be grown as an annual in cooler areas. Good as a cut flower. Pinch back when young to encourage branching.

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#evergreen#full sun tolerant#annuals#perennials#blue flowers#well-drained soil#summer flowers#cutting garden#partial shade tolerant
 
Cultivars / Varieties:
Tags:
#evergreen#full sun tolerant#annuals#perennials#blue flowers#well-drained soil#summer flowers#cutting garden#partial shade tolerant
  • Attributes:
    Genus:
    Oxypetalum
    Species:
    coeruleum
    Family:
    Apocynaceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Southern Brazil, Uruguay
  • Whole Plant Traits:
    Plant Type:
    Annual
    Herbaceous Perennial
    Perennial
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Semi-evergreen
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Good Drainage
    NC Region:
    Coastal
    Piedmont
    USDA Plant Hardiness Zone:
    8a, 8b, 9a, 9b, 10a, 10b
  • Fruit:
    Fruit Type:
    Capsule
    Fruit Length:
    > 3 inches
    Fruit Description:
    Long, boat-shaped seed pods. Seeds have a downy tuft (cypsela) that allows them to be carried by the wind.
  • Flowers:
    Flower Color:
    Blue
    Purple/Lavender
    Flower Value To Gardener:
    Good Cut
    Showy
    Flower Bloom Time:
    Summer
    Flower Petals:
    4-5 petals/rays
    Flower Description:
    Blue 5-petaled flowers that fade to purple.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Semi-evergreen
    Leaf Color:
    Gray/Silver
    Green
    Leaf Type:
    Simple
    Leaf Shape:
    Cordate
    Hairs Present:
    Yes
    Leaf Description:
    Downy, heart-shaped leaves
  • Stem:
    Stem Is Aromatic:
    No