• Photo of Ilex crenata (Ilex crenatas)

Plant Profile: Ilex crenata

Taxonomy: Ilex crenata

Names

Japanese Holly

  • Photo of Ilex crenata (Ilex crenatas)

Phonetic Spelling:EYE-leks kre-NAY-tuh

Genus:Ilex

Species:crenata

Family:Aquifoliaceae

Japanese Holly is an attractive evergreen shrub belonging to the Aquifoliaceae family. This shrub is characterized by its dense, sturdy, and compact growth, reaching heights of up to 12 feet. It is commonly utilized for creating topiaries, and its vibrant red berries add a splash of color to winter landscapes.

For optimal growth, plant it in full sun to partial shade within acidic, well-drained soil, although it can adapt to a variety of soil types. This shrub can be pruned significantly to control its size, making it suitable for smaller gardens. It is resilient, tolerating drought, shade, air pollution, and both poor and clay soils. Additionally, it is easy to transplant and has a slow growth rate, with numerous cultivars available.

In terms of pests and diseases, Japanese Holly generally faces no major issues. However, it may occasionally attract spider mites and nematodes. It's worth noting that alkaline soils can lead to yellowing leaves.

Ilex crenata Feature Summary

Ilex crenata Image Gallery

Tags

#fragrant
#white
#evergreen
#black
#fragrant flowers
#drought tolerant
#white flowers
#green
#wildlife plant
#nectar plant
#winter interest
#air pollution tolerant
#flower arrangements
#hedges
#specialized bees
#cpp
#deer resistant
#pollinator plant
#black fruits
#fantz
#bee friendly

Similar Plants

Ilex crenata is often confused with:

Ilex crenata Feature Summary

Attributes
E. Nepal to Temp. E. Asia
The small fragrant flowers attract bees. Members of the genus Ilex support the following specialized bee: Colletes banksi.
Wildlife Food Source
Fruit
Black, globose, berrylike-fruit on female plants from fall to spring that are .2" in length.
Summer
Fall
Spring
< 1 inch
Flowers
Small (.2 inches), dull, greenish white fragrant flowers in spring that form in clusters of 1-3. Pistillate cyme, in leaf axils of current season's growth; staminate solitary in leaf axils of current season's growth.
White
Green
< 1 inch
Leaves
Leaves are alternate and simple and are shaped elliptic or obovate to oblong-lanceolate. Dark green leaves that are 0.5"-1.3" long and are crowded on stems. The underside of leaves are dotted with blackish pellucid glands. Leaves are good in flower arrangements. Their dark green color provides winter interest.
Elliptical
Obovate
Oblanceolate
1-3 inches
Long-lasting
Good Cut
< 1 inch
Stem
Stems are green on current season growth, and turn gray-green to gray-brown by year 2 or 3. They are often densely pubescent on young stems.
Hairy (pubescent)
Whole Plant Traits
Multi-stemmed
Rounded
Dense
Medium
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Acid (<6.0)
Good Drainage
Occasionally Wet
3 feet-6 feet
6-feet-12 feet
Clay
Loam (Silt)
Sand
Landscape
Drought Tolerant Garden
Pollinator Garden
Winter Garden
Drought
Deer
Insect Pests
Pollution
Diseases
Pollinators
Bees
Specialized Bees

Ilex crenata Attributes

Ilex crenata: Country Or Region Of Origin

E. Nepal to Temp. E. Asia

Ilex crenata: Wildlife Value

The small fragrant flowers attract bees. Members of the genus Ilex support the following specialized bee: Colletes banksi.

Ilex crenata: Particularly Resistant To (Insects/Diseases/Other Problems)

Mildly resistant to damage by deer.

Ilex crenata: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Ilex crenata: Play Value

Attractive Flowers
Attracts Pollinators
Buffer
Colorful
Defines Paths
Easy to Grow
Edible fruit
Fragrance
Pieces Used in Games
Screening
Shade
Sound
Textural
Wildlife Cover/Habitat
Wildlife Food Source
Wildlife Larval Host
Wildlife Nesting
Wind Break
Wind Shimmer

Ilex crenata Fruit

Ilex crenata: Fruit Description

Black, globose, berrylike-fruit on female plants from fall to spring that are .2" in length.

Ilex crenata: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Ilex crenata: Fruit Color

grass
Black

Ilex crenata: Fruit Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Ilex crenata: Display/Harvest Time

Fall
Spring
Summer
Winter

Ilex crenata: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Ilex crenata: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Ilex crenata Flowers

Ilex crenata: Flower Description

Small (.2 inches), dull, greenish white fragrant flowers in spring that form in clusters of 1-3. Pistillate cyme, in leaf axils of current season's growth; staminate solitary in leaf axils of current season's growth.

Ilex crenata: Flower Color

filter_vintage
Green
filter_vintage
White

Ilex crenata: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Ilex crenata: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Ilex crenata: Flower Bloom Time

Winter
Spring
Summer
Fall

Ilex crenata: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Ilex crenata Leaves

Ilex crenata: Leaf Description

Leaves are alternate and simple and are shaped elliptic or obovate to oblong-lanceolate. Dark green leaves that are 0.5"-1.3" long and are crowded on stems. The underside of leaves are dotted with blackish pellucid glands. Leaves are good in flower arrangements. Their dark green color provides winter interest.

Ilex crenata: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Ilex crenata: Leaf Color

spa
Green

Ilex crenata: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Ilex crenata: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Ilex crenata: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Ilex crenata: Hairs Present

No
Yes

Ilex crenata: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Ilex crenata: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Ilex crenata: Leaf Width

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Ilex crenata Stem

Ilex crenata: Stem Description

Stems are green on current season growth, and turn gray-green to gray-brown by year 2 or 3. They are often densely pubescent on young stems.

Ilex crenata: Stem Color

grass
Green

Ilex crenata: Stem Is Aromatic

No
Yes

Ilex crenata: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Ilex crenata Whole Plant Traits

Ilex crenata: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Ilex crenata: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Ilex crenata: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Ilex crenata: Growth Rate

Slow
Medium
Rapid

Ilex crenata: Texture

Fine
Medium
Coarse

Ilex crenata Cultural Conditions

Ilex crenata: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Ilex crenata: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Ilex crenata: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Ilex crenata: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Ilex crenata: USDA Plant Hardiness Zone

thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b

Ilex crenata: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Ilex crenata Landscape

Ilex crenata: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Ilex crenata: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Ilex crenata: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Ilex crenata: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees