Details of...
Scientific Name: Ilex crenata 'Convexa'
Pronunciation: EYE-lecks kruh-NAY-tuh
Common Name: Japanese holly
Family Name: Aquifoliaceae
Plant Type: Broadleaf evergreen
Key ID Features: Small, evergreen shrub with very small leaves that are rubbery, glossy, convex (margins turn downwards) and alternate (compared to boxwood which is opposite).
Course(s): HORT 2355

Habit: Dense, Spreading, Stiffly upright, Twiggy
Form: Round
Texture: Fine
Mature Size:
Height:1.3 - 2.0m
Spread:1.5 - 2.0m
Growth Rate:Moderate
Hardiness Rating: Zone 6: (-23 to -18 C)
Exposure: Filtered shade, Full sun
Soil/ Growing Medium: Acidic, Well-drained
Water Use: Moderate
Landscape Uses: Container planting, Filler, Group or mass planting, Mixed shrub border, Screening, Sheared hedge, Topiary
Additional Info: Google Images
Japanese holly
Leaf Morphology:
Form: Simple
Arrangement: Alternate
Texture/ Venation: Leathery
Surfaces: Lustrous
Colour in Summer: Green, Yellow
Colour in Fall: Green
Leaf(let) Terms:
Shapes: Elliptic, Obovate
Apices: Acute, Obtuse
Bases: Obtuse
Margins: Entire

Inflorescence Type: Cyme
Flower Morphology:Dioecious plant
Number of Petals:4
Corolla Shape:Cruciform
Ovary Position:Superior
Colour (petals): Not showy, White, Green
Flower Scent: None
Flower Time at Peak: May, Jun
Additional Info: Flowers may appear to have both stamens and pistils but individual plants are functionally uni sexual.
Fruit Type: Drupe
Fruit Colour: Black
Fruiting Time: Sep, Oct
Additional Info: Fruit insignificant, berry-like: 4 - 6 seeds each with own endocarp (pyrenes)

Bark Morphology: Smooth
Bark or Stem Colour: Brown

Propagation: Softwood cuttings, Hardwood cuttings
Pest Susceptibility: Leaf miner insect, Root rot
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