Holly 'Convexa' (Ilex crenata 'Convexa')

Holly 'Convexa'

Known as the "Japanese holly," holly 'Convexa' is a variant of holly noted for its glossy leaves and dense foliage. Its name derives from the leaves' unusual, convex shape. It is appreciated as a topiary species and can be pruned into many distinctive shapes. Because it is resistant to blight, it is a popular low-maintenance choice.

Scientific classification

Genus

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Perennial

Lifespan

Shrub

Plant Type

Mid spring, Late spring, Early summer, Mid summer

Bloom Time

Fall, Winter

Harvest Time

1.8 m to 2.5 m

Plant Height

1.2 m to 1.5 m

Spread

Green

Leaf Color

2.5 cm

Flower Size

Black

Fruit Color

Spring

Growth Season

Slow

Growth Rate

Quickly Identify Holly 'Convexa'

Dark green glossy leaves, 0.5 inches (1.27 cm) long with convex upper surface and serrated edges.

Greenish-white flowers in clusters of 2-3, 1/4 inch (0.6 cm) long, inconspicuous but essential identifiers.

Small black fruits, >1/4 inch (6-7 mm) diameter, produced only by female plants, subtle ornamental appeal.

Smooth gray-brown bark, <4 inches (10 cm) diameter, devoid of ridges or furrows, key in landscaping.

Young stems green, pubescent, turning gray-green then gray-brown, distinctive texture and color changes.

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Care Guide for Holly 'Convexa'

Every week

Water

Full sun

Sunlight

15 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Holly 'Convexa' flourishes in moderate moisture conditions, requiring consistent weekly watering for optimal health. As an evergreen, it retains foliage throughout the year, necessitating a regular watering schedule, particularly in winter when indoor heating can diminish humidity levels.

Fertilize: Holly 'Convexa' needs minimal fertilization; apply a thin layer in early spring and autumn during the growing season. Over-fertilization can lead to large, dull leaves, while insufficient fertilization causes weak plants. Avoid fertilizing when temperatures exceed 30°C (86°F) to prevent root damage.

Pruning: Holly 'Convexa' is a dense, evergreen shrub with small, convex leaves. Prune in early to late winter for shape and healthy growth. Remove dead branches and thin overcrowded areas to enhance air circulation and aesthetics. Consult horticultural guides for specific pruning techniques.

Propagation: Holly 'Convexa' is a compact evergreen shrub with glossy leaves. For propagation, take semi-hardwood cuttings from firm new growth, retaining some leaves. Dip in rooting hormone and plant in well-draining soil, ensuring stable moisture and warmth while avoiding water logging to prevent rot.

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