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Best uses

Great for growing in containers by walkways, paths and doorways so the delicious scent can be enjoyed. This plant is equally happy planted out in sheltered beds in the garden. Gardenia also look fabulous incorporated into subtropical plantings with other plants such as vireya rhododendrons and bromeliads. Great for use in courtyards as they like the shelter from hot sun and frost the walls will give, and will fill the air with fragrance.

Physical characteristics

A small sized bushy evergreen shrub growing to around 1.5m tall and 1m wide.

Flowers and foliage

Leaves are ovate, dark green and glossy. Flowers are creamy white and single with a fabulous scent produced through summer often into autumn.

Preferred site

Performs best in semi-shade in humus-rich, well drained soil.

Preparation for planting

Always choose healthy, well-grown, plants and plant after autumn rains, when the soil is moist and warm allows trees and shrubs to establish a good root system well before summer. Planting is often improved on clay soils by adding extra topsoil and forming raised beds. Incorporate coarse sand, bark, peat, compost or other organic material to improve soil structure. Before planting ensure the root ball is saturated and remove the planter bag or pot with minimal root disturbance. Trim any broken roots or branches and plant at the same level as in the container. Dig a hole twice the diameter of the root ball to plant in. Long term slow release fertilizers may be added at this stage. As soil is placed in the prepared hole tread firmly to bring soil in close contact with the root-ball. Unless the soil is very wet water thoroughly making sure that moisture penetrates to the depth of the root-ball.

Maintenance tips

Apply mulch annually this will help suppress weeds and conserve moisture. Feed annually in spring with a balanced fertilizer such as blood and bone at a handful per square metre in spring as new growth begins. Gardenia are gross feeders so feeding throughout the growing season will give best results. Give plants a light trim after flowering to keep growth healthy and compact.

Pests and diseases

Mealybugs and whitefly can be troublesome. Gardenia often suffer from yellowing of the leaves, this can be remedied by plenty of organic fertilizer as they are gross feeders.

Location at Auckland Botanic Gardens

Logan Campbell