How to use Grevilleas for Hedging (Superb, Robyn Gordon, Rosmarinifolia)

Many grevilleas make excellent informal hedging plants thanks to their fast growth and hardiness.

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Grevilleas are a great option if you love native plants and want to grow a hedge for screening or other purposes.

Many grevilleas make excellent informal hedging plants thanks to their fast growth and hardiness.

The best grevillea varieties to use for a hedge

Here are a few varieties of grevilleas that you can use for hedging:

Grevillea ‘Superb’

Jonathon Coombes I Wikimedia

This is an excellent variety for hedging with its salmon-coloured flowers and mid-green foliage.

It grows to a height of around 2 metres and will also spread to about 2 metres.

It can be grown in full sun or part shade and is drought resistant.

Grevillea ‘Peaches and Cream’

Cas Liber I Wikimedia

This variety is perfect if you want a 2-metre high hedge in a sunny position.

The lemon and peach-coloured flowers are a favourite with many native birds.

This variety is also drought tolerant once it is fully established.

Grevillea rosmarinifolia

Peganum I Flickr I CC BY-SA 2.0

If you’re after a somewhat spiky hedge, then this is the variety you want to grow.

It has lovely dense spiky foliage similar to a rosemary plant. The flowers are red and spidery.

It will grow to a height of around 1.8 metres and will spread to a width of 1 metre. You can grow it in full sun or part shade. 

Grevillea ‘Robyn Gordon’

Jeans_Photos I Flickr I CC BY 2.0

This popular grevillea is ideal for hedging and will provide some colour all year round.

It has dense olive-green foliage and lovely red spidery flowers that appear consistently throughout the year.

This variety will grow to a height of 1.5 metres and will spread as wide. It prefers to grow in full sun in well-drained soil. 

Grevillea ‘Coconut Ice’

Tatters I Flickr (cropped) I CC BY-SA 2.0

You’ll love the gorgeous pink and cream flowers on this grevillea.

The dense foliage is slightly prickly which makes it the perfect plant for hedging.

It will grow to a height of 2 metres and will spread to around 2 metres as well.

You can grow it in full sun or part shade in well-drained soil.

RELATED: Check out our guide on Low Maintenance Hedge Plants in Australia.

How to plant, grow, and care for your grevillea hedge

Grevilleas are such hardy plants that they don’t need a lot of extra care.

When you’re growing them as a hedge, all you have to do is give them a tidy-up to help maintain the general shape of the hedge.

Keep in mind that a grevillea hedge will be informal but will look fantastic when the plants are in full bloom.

Planting your grevillea hedge

Here are some tips for planting your grevillea hedge:

  • Plant in well-drained soil. You can use organic matter that is low in phosphorus such as blood and bone to improve the soil structure and drainage.
  • Space your plants around 1.5 to 2 metres apart to give them plenty of room to spread. Grevilleas don’t like having their roots disturbed so it’s a good idea to get the spacing right when planting your hedge.
  • A nice sunny spot is ideal but many varieties can also grow in part shade. You just won’t get as many flowers if your grevilleas are shaded for most of the day.
  • Water well after planting to help settle the soil around the roots. Most grevilleas are drought-tolerant once their roots have become established and won’t need much supplementary watering.
  • Apply a layer of mulch around the base of the plants to help retain some soil moisture. Make sure that the mulch you use is from a native species such as Acacias to ensure that it’s low in phosphorus.

RELATED: How to use Grevillea as ground cover.

Caring for your grevillea hedge

  • As your plants start to grow, you can use your shears to give them a very light prune to get the shape you want. Tip pruning is best as this will encourage denser growth.
  • Remember to prune off the spent flowers regularly as this will encourage the plant to produce more.
  • You can fertilise your plants annually but remember to use a fertiliser that is low in phosphorus because grevilleas are sensitive to this nutrient. You can purchase native-specific fertilisers from your local nursery or from Bunnings.
  • The most common problems that grevilleas have are fungal diseases including leaf spot, leaf blight, root rot, cinnamon fungus, and sooty mould.

FAQ

Are grevilleas fast-growing?

Most grevilleas are extremely fast-growing which is why they’re ideal to use as hedging or screening plants.

Do grevilleas need full sun?

Although they prefer full sun, many grevillea species can tolerate growing in part shade. They just won’t produce as many flowers as those grown in sunny conditions.

Are grevilleas frost hardy?

There are many grevillea species and varieties that are frost-hardy once they’re well-established. Many of these come from the colder regions around the Snowy Mountains.

What is the hardiest Grevillea?

Grevilleas that grow naturally in colder regions of southeastern Australia are some of the hardiest as they can tolerate very cold temperatures. Species such as Grevillea lanigera and Grevillea victoriae are an example. These species have smaller leaves or a felt covering on their leaves to help them withstand the colder climate. Because of their hardy nature, many exciting hybrids have been produced from these cold-tolerant grevilleas.

Photo of author

Annette Hird

Annette Hird has an Associate Diploma of Applied Science in Horticulture. She has worked in a variety of production nurseries, primarily as a propagator. She also had the responsibility of a large homestead garden that included lawn care, fruit trees, roses and many other ornamental plants. More recently, Annette has concentrated on improving the garden landscape of the homes that she has lived in and focused a lot of energy on growing edible plants as well. She now enjoys sharing her experience and knowledge with others by writing articles about all facets of gardening and growing plants.