If you have room for it in your garden, it can be impressive. crenata (Japanese Holly) ‘Rotundifolia’ – This is a male cultivar that can grow to 3 metres (10 ft) tall with a broad, dense spread equal to its height. Great for containers, bonsai and rock gardens. Grows to about 60 cm (24 inches) in 10 years. crenata (Japanese Holly) ‘Mariesii’ – A very slow-growing variety with a dense columnar (horizontal branching) form. New leaves are yellowish in spring, turning to lime green in summer. crenata (Japanese Holly) ‘Lemon Gem’ – The ‘Lemon Gem’ is similar to the ‘Helleri’ above but with lime-green foliage. It has a dwarf form, and at maturity, it’s rounded habit can form to just over. Growth rate is a little faster than other Japanese hollies. crenata (Japanese Holly) ‘Hetzii’ – The ‘Hetzii’ is similar to the ‘Convexa’ above but with larger leaves. Best for zones 7-9, where it can survive for about 40 years. It prefers rich, acidic soil and is not drought tolerant. crenata (Japanese Holly) ‘Helleri’ – This is a female cultivar with a rounded, dense, dwarf form that slowly grows to 1 metre (3 ft) tall and 1.2 m (4 ft) wide. ‘Golden Gem’ is a male cultivar, with only a few flowers and no berries. The foliage is green with speckled yellow-gold colour. Great for low hedges and ideal for topiary. Grows up to 1 metre (3 ft) tall with equal spread if not pruned. crenata (Japanese Holly) ‘Golden Gem’ – It is a compact, bushy shrub and a spreading habit. Best planted in a partially shady location. It also tolerates drought, poor soil conditions and can withstand urban pollution. This dense shrub works well with heavy pruning for hedges and topiary. It is also sometimes called ‘Convex-Leaved Japanese holly due to how the roundish leaves cup downward. crenata (Japanese Holly) ‘Convexa’ – The Japanese holly ‘Convexa’ also has a rounded habit as the ‘Compacta’ but it is about 30 cm (12 inches) smaller. Little pruning is needed to keep its rounded form. It has a rounded habit that can reach up to 1.8 metres (6 ft) with equal spread forming a dense and attractive shape. crenata (Japanese Holly) ‘Compacta’ – Also commonly known as ‘Compact Japanese holly’. Not too comfortable in warmer weather, though. For more challenging jobs, a pair of suede or leather gloves go a long way. Fabric gloves with vinyl offer a good grip on the fingers and palm.
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