Open Year-Round

Wednesday – Sunday, 10a – 4p

and by Appointment!

Ilex glabra ‘Shamrock’

‘Shamrock’ Inkberry is a cultivar of Inkberry that is always female. This means, if there is a male holly nearby, this plant should produce berries during its fruiting season. The wild type Inkberry can get up to ten feet, while this cultivar is more compact at up to five feet. Small white flowers bloom in early summer which turn into berries in fall given they are pollinated. Hollies are known to hybridize, so this plant can still fruit if a male holly is nearby of a different species. The jet-black drupes can persist in winter, providing food for songbirds and mammals when food may otherwise be scarce. Often used as a foundational plant, Inkberry can add structure to a garden as a hedgerow or backdrop for smaller plants. As a broadleaf evergreen, color is added to winter gardens while also being a windbreak for cold winter winds. Inkberry Holly makes a great native alternative to Boxwood plantings.

Key Info

Scientific Name: Ilex glabra ‘Shamrock’
Common Names: 'Shamrock' Inkberry
Plant Type:
Protected Plant Species: No
Light Requirement: ,
Moisture Requirement: ,
Leaf Retention:
Bloom Times: ,
Flower Color: White

Additional Info

Habit: Erect, rounded, colony-forming, rhizomatous, thicket-forming
Height: 3-5'
Spread: 3-5'
Soil Conditions: Clay, sand
Leaves: Dark green, glossy, simple, ovate to elliptic
Flowers (or reproductive structures: Female flowers
Fruit: Jet black drupes, September – November
USDA Hardiness Zone: 4-9
USDA Wetland Indicator Status in NC: FAC (Eastern Mountains and Piedmont), FACW (Atlantic and Gulf Coastal Plain)
Pollination: Birds, bees, and flying insects
Wildlife Connections: Provides food for songbirds and small mammals in winter
Propagation: Stem cutting. As a cultivar, seeds may not have the same characteristics of the mother plant