Photo of Xysmalobium undulatum by Annie's Annuals & Perennials

Photo by Annie's Annuals & Perennials

Used with permission, all rights reserved.

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Xysmalobium undulatum

Also Known As

  • Milk Bush
  • Uzara

Plant type

perennial

size

  • H: 4'-6'
  • W: 2'-3'

planting zones

  • 7a-11

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Xysmalobium undulatum plant details

Xysmalobium undulatum is a broadleaf deciduous perennial with green foliage. In summer cream and green flowers emerge. Attracts bees, beneficial insects and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and regular water. Adapts to various soil conditions. Does well in alkaline, average, clay, rich and well-drained soil.

CHARACTERISTICS OF Xysmalobium undulatum

Plant type: perennial
Plant family: apocynaceae
Foliage: deciduous green
Mature size: 2 FT - 3 FT - wide, 4 FT - 6 FT - tall
Flowers: cream and green blooms in summer
Uses: medicinal, rare, unique

GROWING CONDITIONS for Xysmalobium undulatum

USDA Zones: 7a - 11
Sun exposure: sun - mostly sun
Watering frequency: regular
Soil needs: alkaline, average, clay, rich and well-drained

Nursery contributed plant descriptions

Pretty much unheard of in cultivation – this EXCEPTIONALLY RARE South African wildflower bears a striking resemblance to its close cousin, Asclepias (“Milkweed”). Spherical clusters of fuzzy cream or green colored, star-shaped flowers in late Spring or Summer make way for bright green, puffy seed pods up to 4” long and covered in curly “hairs”. Dying back to the ground with the first frost, it re-emerges in Spring with multiple erect 5’ tall stalks with dark-green, glossy, elongated, upward curving 10” long leaves with contrasty creamy yellow ribs and veins. Prized in its native range for a wide variety of medicinal and utilitarian uses from stuffing pillows with its downy-soft seed fluff to using its roots to treat tummy troubles – for which it is commercially available under the common name “Uzara”. Tolerates a wide range of soils including clay. Use extreme care when transplanting as its roots are sensitive.

Gardening facts about Xysmalobium undulatum plant

How to Grow Xysmalobium undulatum

  • Sun Exposure

    • sun - mostly sun
  • Water Needs

    • regular
  • Soil Needs

    • clay
    • alkaline
    • adaptable
    • average
    • well-drained
    • rich

Features

  • Foliage Color

    • green
  • Flower Color

    • cream
    • green
  • Wildlife

    • beneficial insects
    • bees
    • butterflies
  • Flower Season

    • summer
  • Foliage Season

    • deciduous
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