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Plant type Perennials, Grasses, Natives
Plant Uses Container Plant

Best uses

Grasses, sedges and similar plants provide a range of colours and textures to contrast with other garden features. They are especially useful where low plantings are required. Spectacular effects can be achieved by planting grasses en masse to create a natural grassland appearance. Chionochloa is also great for coastal plantings and in large containers, where it will arch over the sides of the pot.

Physical characteristics

A stout, wide-spreading native tussock grass that grows up to a 1m tall.

Flowers and foliage

The weeping green leaves are up to 12 mm wide and are larger than most tussocks. The flowering plumes (up to 30cm long) appear on 1.5m stems through summer. The plumes begin a green colour turn light brown as they age.

Preferred site

Best planted in a well drained soil in full sun to partial shade. Tolerant of drought and windy coastal positions, which makes Chionochloa great for tricky places where other plants won't grow.

Preparation for planting

Prepare the planting site when soil is moist and easily worked. Remove all weeds and incorporate bark compost or other organic material. For heavy soils, incorporate extra topsoil and coarse pumice sand. Plant when the soil is moist and warm in autumn or early spring, so that a good root system develops. If planting a border, grasses should just touch each other to create a full effect without overcrowding. Planting too closely will lead to spindly growth and eventual decline.

Always choose healthy, well-grown plants and plant after autumn rains. Before planting, ensure the root ball is saturated and remove the planter bag or pot with minimal root disturbance. Trim any broken roots and plant at the same level as in the container. Dig a hole twice the diameter of the root ball, press in and water once planted. Make sure plants are watered well until established if planting in a drier period. Plant with some general slow-release fertiliser. After this, apply an organic-based fertiliser (such as blood and bone) at a handful per square metre as new growth appears in spring.

Control slugs and snails to prevent damage to tender young shoots. Mulch with bark or similar material in spring to conserve moisture.

Maintenance tips

Apply mulch annually to help suppress weeds and conserve moisture. Chionochloa grow well in most free-draining positions and require little fertiliser. A light application in spring is sufficient, as new growth begins.

Divide Chionochloa tussocks in autumn to early winter, to enable the new plants to establish while the soil remains relatively warm. Dividing can be achieved by lifting the whole plant, placing two garden forks back-to-back in the middle of the clump, and pushing in and forcing apart with the forks. The clumps should then be immediately re-planted in their new positions and watered in.

Chionochloa are best propagated by seed, which can be collected in summer and autumn. It is a good idea to remove dead leaves once or twice a year. If need be, they can be cut back to ground level, but this is seldom required. Chionochloa grasses produce plenty of seed, so tend to seed out all over. The resulting new plants can then be dug up and transplanted to wherever they are needed.

Ecological and biodiversity benefits

Seed heads can be left on over winter for food for birds.

Location at Auckland Botanic Gardens

Rose Garden