Garden Scheme

Plant library  ·  Conifers & Evergreens

Inkberry Holly

Ilex glabra

Inkberry Holly is a native evergreen shrub that brings a steady, year-round mass to hedges, rain gardens, and larger planting beds. At about 6 feet tall and 6 feet wide, it has enough presence to define a boundary without becoming a tree-scale screen. Its dark foliage and black berries give a planting structure beyond the growing season, while its pollinator-friendly habit suits gardens designed for wildlife activity.

  • Pollinator friendly
  • Deer resistant
  • Native to North America
Sunlight Full Sun
Water Regular
USDA zones 5–9
Spacing 5 ft
Mature size 6 ft tall, 6 ft wide

Placement and use

Use Inkberry Holly as a broad, informal hedge where a continuous evergreen edge is more useful than a tightly clipped wall. It can also anchor the back or middle of a deep border, especially beside a swale, rain-garden basin, or other area that receives regular moisture. Keep its long-term bulk clear of narrow walkways and low windows. A row can define a property edge or soften a fence, while grouped plants make a substantial evergreen block in a native-style planting.

Spacing and mature footprint

Space plants 5 feet apart, center to center, for a connected hedge or mass that can knit together as it fills out. Each shrub may reach about 6 feet wide, so allow its outer growth to overlap the intended planting zone rather than placing the row flush against a path or structure. Set the planting line back far enough to retain a reachable strip for pruning, weeding, and circulation. In a mixed bed, reserve the surrounding area for lower plants rather than crowding the shrub’s base.

Three plants set 5 ft apart, center to center; shaded circles show the 6 ft mature spread.

Sun, water, and soil

Plan Inkberry Holly in full sun with regular water, particularly while it is becoming established. It is well suited to moist ground and can handle occasionally wet soil, making it useful where drainage is slower than in a typical border. Acidic soil is the best fit; avoid siting it where alkaline soil is likely to cause foliage yellowing. Give it a permanent, generously sized bed rather than a dry, tightly confined foundation slot.[1][2]

Seasonal notes

The evergreen foliage keeps the planting visually occupied through winter, so leave its mature footprint open even when neighboring perennials are dormant. Small spring flowers are followed by black fruit on female plants when a suitable male pollinator is present. The fruit develops in early fall and can persist into winter, adding seasonal detail to hedge rows and rain-garden edges. If shaping is needed, make room to work around the plants in early spring before new growth begins.[1][2]

Planning caveats

Inkberry Holly can spread by root suckers and gradually form colonies. This is useful for a naturalized mass, but it calls for an edge that can be monitored where the shrub meets lawn, paths, or a formal border. Remove suckers when a single-shrub outline is wanted. Plan berry display deliberately: male and female plants are separate, so a female planting needs a compatible male nearby to set fruit.[1][2]

Growing facts

Botanical name
Ilex glabra
Type
Shrub
Category
Conifers & Evergreens
Lifecycle
perennial
USDA hardiness zones
5–9
Sunlight
Full Sun
Water
Regular
Plant spacing
5 ft
Mature size
6 ft tall, 6 ft wide
Pollinator friendly
Yes
Deer resistant
Yes
Native to North America
Yes

References

  1. Ilex glabra — North Carolina Extension Gardener Plant Toolbox
  2. Ilex glabra - Plant Finder — Missouri Botanical Garden

Editorial content updated 2026-07-20.