There are so many incredible Australian native plants that can offer fantastic, hassle-free landscaping opportunities. Kunzea plants are often a popular choice for their many stunning blooming habits.
Kunzea ambigua, or Tick Bush, is one such species that is grown for its fragrant flowers but also its helpful essential oils. If you’re looking to add another Australian native to your garden landscape, here’s what you need to know to start growing kunzea ambigua at home.
What is Kunzea Ambigua?
Kunzea ambigua is a perennial, evergreen shrub that has a curious weeping habit, green foliage and clumps of sweet-smelling white flowers. Part of the Myrtaceae family, this cultivar of kunzea grows naturally along the Southeast coast of Australia.
The kunzea genus derives its name from the well-known German botanist Gustave Kunze. The species name, ambigua, derives from the Latin word for obscure, which alludes to the plant’s weeping growth habit.
Other common names for kunzea ambigua includes:
- White Kunzea
- White Cloud
- Tick Bush
- Poverty Bush
Why is it Called Tick Bush?
The kunzea ambigua naturally produces a very fragrant essential oil. One can often find native animals sleeping underneath tick bushes as relief from ticks and other parasites in the wild.
Today, the oil of the ambigua is used as a powerful tick repellent. This essential is also used for the treatment of eczema, skin rashes, muscular aches, arthritis, and rheumatism.
How to Start Growing Kunzea Ambigua
White kunzea is an incredible fuss-free plant. As it’s drought and frost tolerant, once established, it won’t require any extra attention.
Kunzea ambigua can be grown in a variety of environments and only requires a light, sant and well-draining soil. It can be grown as part of a rock garden, as a screening plant, as a windbreak or even smaller bonsai plant.
As white kunzea requires a significant amount of daily sunlight in order to flower, it’s best to grow it outdoors. Pick a spot that receives plenty of morning or afternoon sun. In general, it needs at least 4 hours of direct sunlight.
How to Propagate Kunzea Ambigua
Tick bush can be easily propagated from readily available seeds or hardwood tip cuttings.
- Most gardeners will not recommend propagation from seed as the seeds of the Myrtaceae species require heat to germinate and can remain dormant for many years.
- The ideal germination temperature is between 18-22°C.
- Sow the seeds directly onto the surface of a porous seeding mix.
- Pour water over the seeds, allowing them to lodge. Then gently sprinkle with a small amount of soil.
- Seeds should germinate between 14 to 28 days; however, it can take longer, so just be patient.
- Cuttings can be taken from existing healthy tick bush plants. Be sure to use a sterilized grafting knife to avoid the transmission of any diseases.
- Cutting should be taken during late spring.
- Once removed from the original plant, dip the cut end into a commercial rooting hormone and then into a porous seeding mix.
Tips for Kunzea Ambigua Care
There really isn’t much you’ll need to do when it comes to kunzea ambigua care. It usually handles itself incredibly well in normal outdoor conditions, especially in coastal regions.
When grown outside, it will require little to no additional water beyond the natural rainfall. Fertiliser can be added to support plant growth. A general-purpose fertiliser can be applied during spring.
The only major care aspect you’ll need to consider is occasional pruning. When left to grow, white kunzea can grow as much as 3 metres tall and 5 metres wide.
However, many gardeners prefer to keep this cultivar as a smaller growing shrub. Regular pruning will help you to keep it smaller and in shape.
Should you be growing this cultivar as a smaller indoor plant or as a bonsai, some growers recommend repotting on a yearly basis, usually in the spring or fall.
Pests, Problems & Diseases
This species is incredibly hardy and is resistant to most common garden pests and diseases. The only commonly complained about issue is the webbing caterpillar which may frequent your tick bush.
Luckily, webbing caterpillars can easily be controlled through physical removal or by a commercial insecticide.
Other Interesting Kunzea Facts
- Although known for its big white blooms, a pink-flowered variety is also in cultivation.
- The form of growth can be controlled through training. Using a wire, you can control the shape but be sure to begin wiring only when the branches are young and pliable so as not to damage the plant.
- The leaves of the white kunzea are very sweet-scented and can be used to add a strong flavour to teas or to cooking. Apparently, it pairs well with roast meat and vegetables.
- Kunzea ambigua is also a honey-producing plant. In many parts of Tasmania, kunzea honey is readily available.
Add Some Summer Colour with Kunzea Ambigua
This summer bloomer is a great Aussie native to choose. Due to its hassle-free care, it’s a great choice for beginner growers, and it will bring a bunch of fantastic garden visitors to your backyard.
For a real summer, spectacle considers growing some of the other kunzea species alongside your kunzea ambigua.