Otherwise known as the Blue Hibiscus, Alyogyne huegelii is neither blue nor a member of the hibiscus family. The alternative names of Lilac Hibiscus and Purple Hibiscus more accurately represent the flower color.
Alyogyne huegelii is an evergreen shrub with an upright arching form, dark green leaves and large, glossy flowers. It is native to the Southwest botanical province of Western Australia, extending along its entire coastline. If properly cared for, the plant can grow to about 6 feet in height and breadth.
In the Garden
Blue Hibiscus has an upright habit and deeply cut and pubescent dark green leaves. It blooms nearly all year and the flowers are 4-5 inches across with large luminescent petals that fade after a few days. It can be used as a specimen or container plant.
- Scale & aphids can be a serious problem with this plant.
- Needs protecting from wind.
Caring & Growing
USDA Hardiness Zone: 9 – 10
Grow Blue Hibiscus at a location that receives full sun through the majority of the day. If necessary, the plant can withstand short periods of shade during the day.
Will tolerate sand, loam or clay soils as long as they are well drained. Can also tolerate alkaline conditions.
Cover the newly planted bush with a heavy layer of mulch. Choose a fast-decomposing, nutrient-rich mulch to provide all the nutrients this hearty shrub requires. Mulch also moderates temperatures around the root ball and holds in moisture.
Provide the blue hibiscus with enough water to saturate the ground thoroughly immediately after planting. Water the plant enough to saturate the ground three to four days later, one week later and again two weeks later. Once the plant is established, it requires only supplementary watering during periods of extreme drought.
The blue hibiscus generally thrives without the need for fertilizer.
Misc. Maintenance Tips
Prune the plant to maintain its size and appearance and to promote flowering. Prune it hard after flowering or prune frequently and lightly during flowering season will result in a denser, more compact plant.