Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’)
Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’) is a shrub that can grow 1.5m – 3m tall and 50cm – 1.5m wide. In this growing guide we’ll learn the cultivation details and how to plant Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’).
This plant is commonly known as Japanese holly ‘Convexa’.
This is a evergreen plant that takes 20-50 years to reach full maturity.
In this article
Plant profile
Common name: Japanese holly ‘Convexa’
Scientific name: Ilex crenata ‘Convexa’
Plant type: Shrubs
Habit: Bushy
Height: 1.5m – 3m
Spread: 50cm – 1.5m
Foliage: Evergreen
Sunlight: Full Sun
Soil: Chalk, Clay, Loam, Sand
Moisture: Moist but well drained, Well drained
Garden type: City & Courtyard Gardens, Patio & Container Garden
Other characteristics: RHS Award of Garden Merit
Seasonal colors
| Season | Stem | Foliage | Flower | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
How to plant Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’) – Meneerke bloem, CC BY-SA 4.0, via Wikimedia Commons
Shrubs are fundamental elements in any garden.
They add color and interest throughout the seasons with their wide variety of flowers, foliage, fruits, trunks and stems.
Whatever the size or style of your garden, the permanent woody structure or the foliage of evergreen shrubs will give the space shape and dimension.
Other types of Ilex to consider:
See all Ilex
How to plant
In this section we will learn how to plant Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’), know its needs in terms of soil, watering and sun exposure.
Soil
Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’) is a plant that adapts to all types of soils, chalk, clay, loam or sand.
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The chalky soil is pale and contains chunks of calcium-rich rock. It is a fertile and well-draining soil, almost always alkaline.
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Clay soil is composed of more than 25 percent clay particles. These particles have a high moisture holding capacity and the soil is heavy to dig and can be waterlogged in winter (dry in summer).
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The loam soil is dark, rich in organic matter but balanced in minerals. It offers the best of all worlds, retaining enough water for the plants, but allowing excess moisture to drain away. This is the most desired type of garden soil, perfect for most plants.
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Sandy soil is light, porous and very easy to drain. It is a soil poor in organic matter and nutrients. It is composed of relatively large mineral particles that allow water to drain quickly.
It is not very sensitive to soil acidity or alkalinity and grows well in soils with pH acid, alkaline or neutral.
Regarding drainage, Ilex crenata ‘Convexa’ likes to grow in moist but well drained or well drained soils.
Sunlight
Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’) should be grown in full sun places.
Cultivation profiles – Growing Japanese holly ‘Convexa’ (Ilex crenata ‘Convexa’) – Meneerke bloem, CC BY-SA 4.0, via Wikimedia Commons
