Corokia cotoneaster aka Wire Nettingbush

Corokia cotoneaster is an evergreen shrub from New Zealand. It belongs to the Argophyllaceae family. Its common name, wire-netting bush, refers to its tangled branches. These cross each other to form a dense, rounded shape. Small, dark green leaves grow among the branches. The plant keeps its leaves through the year. Its branching form gives it a strong presence in gardens.

In gardens, it reaches about 5–8 feet [1.5–2.5 metres] tall. Its mature spread falls within the same range. Allow room for both its height and width when planting. The RHS gives a maturity period of 10–20 years. Small yellow flowers appear in clusters during spring. Red or yellow berries follow the flowers. These fruits add colour, but they are not for eating. The RHS warns against people and pets eating them. Wear gloves and other protective gear when handling the plant.

Choose a sunny site with fertile soil that drains well. The soil can range from dry to moist. Suitable soils include chalk, loam and sand. Acid, neutral and alkaline conditions are all suitable. Shelter the plant from cold winds that dry its leaves. A south-facing or west-facing site suits its needs. The RHS rates its cold tolerance as H4. This covers winter lows of about −10 to −5°C under UK conditions. It can grow outdoors through much of the UK.

Its rounded shape suits beds, borders and planting beside walls. The RHS also lists coastal, city and courtyard gardens as uses. It fits both cottage gardens and less formal planting schemes. Its tangled framework offers structure without relying on flowers alone. Hard pruning can keep its growth within bounds when needed. To raise more plants, take greenwood cuttings in early summer. Semi-ripe cuttings offer another option in mid to late summer.

The RHS reports few pest problems for this species. Honey fungus may pose a risk where it already occurs. However, the evidence does not establish how prone this shrub is. Its ornamental berries should not serve as food. The supplied evidence gives no edible or medicinal uses. Garden value rests on its form, evergreen leaves, flowers and fruit.