Plant DetailShow Menu

Allium cuthbertii

Phonetic Spelling
AL-ee-um kuth-BERT-ee-eye
Description

Cuthbert's Onion is a perennial bulb in the lily family commonly found in sandhills and Piedmont and rock outcroppings. It blooms in May-June and then dies down in the summer. It can be identified by the bulb that has cross-hatch fibrous scales and the flowers that have a crested ovary and capsule. It is a NC threatened species.

Cuthbert's Onion is more heat-tolerant than Nodding Onion and grows in poor and rocky soils or soils with good drainage in full sun to partial shade. 

Cultivars / Varieties:
Tags:
#NC native#summer bulbs#pollinator plant#food source summer#food source herbage#food source nectar#food source pollen#native bulb#food source bulbs#bird friendly#food source hard-mast fruit#threaten species#spring flowering bulbs
 
Cultivars / Varieties:
Tags:
#NC native#summer bulbs#pollinator plant#food source summer#food source herbage#food source nectar#food source pollen#native bulb#food source bulbs#bird friendly#food source hard-mast fruit#threaten species#spring flowering bulbs
  • Attributes:
    Genus:
    Allium
    Species:
    cuthbertii
    Family:
    Amaryllidaceae
    Life Cycle:
    Bulb
    Perennial
    Country Or Region Of Origin:
    SE USA
    Distribution:
    NC, SC, AL, GA, FL
    Wildlife Value:
    Flowers attract pollinators.
  • Whole Plant Traits:
    Plant Type:
    Bulb
    Native Plant
    Perennial
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Erect
    Growth Rate:
    Medium
    Maintenance:
    Low
    Texture:
    Fine
  • 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 Texture:
    Clay
    Loam (Silt)
    Sand
    Shallow Rocky
    Soil Drainage:
    Good Drainage
    Occasionally Dry
    Available Space To Plant:
    Less than 12 inches
    NC Region:
    Coastal
    Piedmont
    Usda Plant Hardiness Zone:
    7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
  • Fruit:
    Fruit Color:
    Black
    Display/Harvest Time:
    Summer
    Fruit Type:
    Capsule
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    The fruit is a capsule with shiny seeds from June to July.
  • Flowers:
    Flower Color:
    Pink
    Purple/Lavender
    White
    Flower Inflorescence:
    Umbel
    Flower Bloom Time:
    Spring
    Flower Shape:
    Star
    Flower Petals:
    6 petals/rays
    Flower Size:
    < 1 inch
    Flower Description:
    White, pink, and purple flowers bloom from May to June in clusters of star-shaped blooms that have a crested ovary and capsule
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Shape:
    Linear
    Leaf Margin:
    Dentate
    Entire
    Hairs Present:
    No
    Leaf Length:
    > 6 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    4-13 inch long grass-like leaves with entire or dentate margins.
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Cross Section:
    Round
    Stem Description:
    Solitary, erect, green stems that are round to angled
  • Landscape:
    Landscape Location:
    Lawn
    Naturalized Area
    Small Space
    Landscape Theme:
    Native Garden
    Pollinator Garden
    Rock Garden
    Attracts:
    Bees
    Hummingbirds
    Pollinators
    Small Mammals
    Songbirds