Plant DetailShow Menu

Helleri Holly Ilex crenata 'Helleri'

Other Common Name(s):

Phonetic Spelling
EYE-leks kre-NAY-tuh
This plant has low severity poison characteristics.
See below
Description

Heller Holly is a female cultivar of Ilex crenata, which is a native of Japan and east Asia and can be found in thickets, woods and wet places in lowland and mountains all over Japan. Heller Holly is an evergreen shrub that grows up to 5' and is a dwarf form of its parent. Heller Holly is dense, rigid, and compact with a spreading mound and has non-showy, greenish-white flowers in the spring and small black drupe in the fall. Fruit is modestly and infrequently produced. The plant withstands heavy pruning and can be used for topiary. It tolerates poor, sandy, and clay soils, prefers the shade, and is tolerant of pollution. It is intolerant to Alkaline soils and is easily transplanted. It has a slow growth rate.The 'helleri' cultivar was named Holly of the Year for 2015 by the Holly Society of America.

Plant in the full sun to partial shade in acidic well-drained soil though it tolerates a wide range of soil types, from moist to dry, including clay. The shrub can be pruned to manage its size so it works well in small spaces. It may not thrive in areas with high heat and humidity (USDA zones 8 and 9). The species is dioecious (meaning individual flowers are either male or female, but only one sex is to be found on any one plant, thus both male and female plants must be grown if seed is required. In the case of Heller Holly, another cultivar type would be needed, since all Heller Holly are female).

Diseases, Insect Pests,and Other Plant Problems:

No serious insect or disease problems. Susceptible to spider mites and nematodes.  Alkaline soils will cause the leaves to yellow.

More information on Ilex crenata.

See this plant in the following landscape:
Mountain Ridge Top Garden - North Lawn and Upper Drive Border
Cultivars / Varieties:
Tags:
#evergreen#white flowers#wildlife plant#slow growing#nectar plant#shade garden#air pollution tolerant#specialized bees#easy to transplant#children's garden#playground plant#pollinator plant#black fruits#sandy soils tolerant#clay soils tolerant#bee friendly
 
Cultivars / Varieties:
Tags:
#evergreen#white flowers#wildlife plant#slow growing#nectar plant#shade garden#air pollution tolerant#specialized bees#easy to transplant#children's garden#playground plant#pollinator plant#black fruits#sandy soils tolerant#clay soils tolerant#bee friendly
  • Attributes:
    Genus:
    Ilex
    Species:
    crenata
    Family:
    Aquifoliaceae
    Life Cycle:
    Perennial
    Woody
    Recommended Propagation Strategy:
    Seed
    Stem Cutting
    Country Or Region Of Origin:
    East Nepal to Temperate East Asia, Japan and Korea
    Fire Risk Rating:
    medium flammability
    Wildlife Value:
    The small fragrant flowers attract bees and other pollinators. Members of the genus Ilex support the following specialized bee: Colletes banksi. Berries provide a food source for birds.
    Play Value:
    Attracts Pollinators
    Edible fruit
    Wildlife Food Source
    Particularly Resistant To (Insects/Diseases/Other Problems):
    Mildly resistant to damage by deer.
    Edibility:
    Use caution. Human ingestion of berries can cause minor toxic reaction.
    Dimensions:
    Height: 2 ft. 0 in. - 4 ft. 0 in.
    Width: 3 ft. 0 in. - 4 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Shrub
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Habit/Form:
    Dense
    Erect
    Mounding
    Multi-stemmed
    Spreading
    Growth Rate:
    Slow
    Maintenance:
    Medium
    Texture:
    Fine
    Appendage:
    Spines
  • 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
    Soil pH:
    Acid (<6.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Wet
    Available Space To Plant:
    3 feet-6 feet
    NC Region:
    Coastal
    Piedmont
    USDA Plant Hardiness Zone:
    5b, 5a, 6a, 6b, 7b, 7a, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Black
    Display/Harvest Time:
    Fall
    Summer
    Fruit Type:
    Berry
    Drupe
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    Small, globose, berry-like black drupe appearing infrequently in fall on female plants. Fruit is modestly produced and slightly more than 1/4 of an inch.
  • Flowers:
    Flower Color:
    Green
    Insignificant
    White
    Flower Inflorescence:
    Cyme
    Flower Value To Gardener:
    Fragrant
    Flower Bloom Time:
    Spring
    Flower Petals:
    4-5 petals/rays
    Flower Size:
    < 1 inch
    Flower Description:
    Flowers are rarely observed in clusters of 1 to 3 and are 1/4 inch in length. Non-showy greenish-white flowers in spring. Flower inflorescence is pistillate a cyme and staminate solitary in leaf axils of current season's growth.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Leaf Color:
    Green
    Leaf Feel:
    Glossy
    Smooth
    Leaf Value To Gardener:
    Good Cut
    Long-lasting
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Elliptical
    Lanceolate
    Oblong
    Obovate
    Leaf Margin:
    Crenate
    Hairs Present:
    No
    Leaf Length:
    < 1 inch
    Leaf Width:
    < 1 inch
    Leaf Description:
    Small, alternate, simple, crenate, flat dark green leaves that are 1/2 inch to 1 inch long. The underside is dotted with blackish pellucid glands.
  • Bark:
    Bark Color:
    Dark Gray
    Green
    Surface/Attachment:
    Smooth
    Bark Description:
    Smooth, gray-brown or slightly greenish.
  • Stem:
    Stem Color:
    Brown/Copper
    Green
    Stem Is Aromatic:
    No
    Stem Surface:
    Hairy (pubescent)
    Stem Description:
    Stems are green on the current season growth and turn gray-green to gray-brown by year 2 or 3. Young stems are often densely pubescent.
  • Landscape:
    Landscape Location:
    Recreational Play Area
    Landscape Theme:
    Children's Garden
    Drought Tolerant Garden
    Pollinator Garden
    Design Feature:
    Border
    Foundation Planting
    Hedge
    Mass Planting
    Attracts:
    Bees
    Pollinators
    Songbirds
    Specialized Bees
    Resistance To Challenges:
    Deer
    Drought
    Pollution
    Poor Soil
  • Poisonous to Humans:
    Poison Severity:
    Low
    Poison Symptoms:
    Minor toxicity. Ingestion may cause vomiting, diarrhea, or other illness in humans.
    Poison Toxic Principle:
    Saponins
    Causes Contact Dermatitis:
    No
    Poison Part:
    Fruits