ADVERTISEMENT

ADVERTISEMENT

Exploring Grevilleas Flowering Times

In general, grevilleas will flower in winter and well into spring. This is considered their peak flowering period.

Grevilleas are one of the most delightful native plants with a wide range of different flowering forms. They brighten up any garden with their vibrant blooms and are loved by nectar-eating birds.

As there are so many different species of grevilleas that you can grow and just as many cultivars, their flowering time will vary from species to species.

When grevilleas flower

In general, grevilleas will flower in winter and well into spring. This is considered their peak flowering period.

New Holland Honeyeater in Robyn Gordon Grevillea | Plant care

However, there are many species that will produce flowers for many months of the year.

This might also depend on where you live and what climate you experience. Your local nursery or garden centre should be able to advise you on the particular species or cultivars that will grow well in your garden.

The different flower types of grevilleas

Grevilleas have three distinctively different flower forms that you might be familiar with.

Spider flowers

Spider flowers are often the smallest of all the grevillea flowers and they possess multiple short racemes that are spread out like spider’s legs.

Grevillea ‘New Blood | Plant care

Toothbrush flowers

Toothbrush flowers are the most spectacular grevillea flowers and are very showy. The flower heads are often quite long and have racemes that are all on one side.

Brush flowers

Brush-flowered grevilleas aren’t as common in cultivation as the other two forms. These flowers are also quite long but they have racemes spread evenly around, similar to bottlebrushes or Callistemon.

Grevillea species and cultivars that flower for most of the year

Here’s a selection of grevillea species and cultivars that are likely to flower for most of the year.

  • Grevillea ‘Ned Kelly’ with orange to red spider flowers
  • Grevillea ‘Lana Maree’ with pretty dark pink toothbrush flowers
  • Grevillea ‘Charlie’s Angel’ with red spider flowers
  • Grevillea ‘Panrock Princess’ with bright pink brush flowers (for dry climates)
  • Grevillea ‘Royal Mantle’ with long toothbrush red flowers
  • Grevillea ‘Orange Marmalade’ with deep orange spider flowers
  • Grevillea ‘Robyn Gordon’ with pinky-red toothbrush flowers
  • Grevillea ‘Superb’ with peachy-orange toothbrush to brush-type flowers

Grevillea species that flower from spring to autumn

Grevillea Robusta 1 | Plant care

Here are a few grevillea species that will produce flowers from spring to autumn.

  • Grevillea ‘Bonnie Prince Charlie’ with red and yellow spider flowers
  • Grevillea baileyana – a small tree with yellow brush-like flowers
  • Grevillea robusta – a tall tree with outstanding deep orange toothbrush flowers

Stunning winter-flowering grevillea species

Here’s a selection of stunning winter-flowering grevillea species. Some of these may even flower as early as autumn and continue into spring.

  • Grevillea ‘Little Robyn’ with peachy colour toothbrush flowers
  • Grevillea ‘Red Wings’ with attractive red spider flowers
  • Grevillea ‘Bon Accord’ with dainty deep pink spider flowers
  • Grevillea ‘Strawberry Pops’ with stunning brush flowers in shades of strawberry and pink

FAQ

Why isn’t my grevillea flowering?

The most common reason that your grevillea is not flowering is that it’s not getting enough sunlight. Grevilleas also don’t like growing in heavy clay soils and won’t flower under these conditions. 

How do I encourage grevilleas to flower?

To encourage grevilleas to flower, tip prune your plants regularly and feed once a year with a native fertiliser low in phosphorus.

Do grevilleas flower in winter?

Yes, many different species of grevilleas will flower in winter.

When should you prune a Grevillea?

The best time to prune a grevillea is just after it has finished flowering. This will usually be in early summer. However, you can tip prune your plants at any time of the year.

Can I use Seasol on grevilleas?

Yes, grevilleas will benefit from an application of Seasol diluted in water during the warmer months and also while they’re establishing themselves in your garden. Seasol is an excellent tonic to promote strong healthy growth.

Is blood and bone good for grevilleas?

I wouldn’t use blood and bone on grevilleas because it does contain phosphorus. It’s better to use a fertiliser specifically designed for native plants as this will be extremely low in phosphorus.

Photo of author

Annette Hird

Annette Hird is a gardening expert with many years of experience in a range of gardening related positions. She has an Associate Diploma of Applied Science in Horticulture and has worked in a variety of production nurseries, primarily as a propagator. She has also been responsible for 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.

ADVERTISEMENT

Leave a Comment