Discover the many different types of Grevillea flowers that can be fascinating addition to your garden and get tips on how to cultivate these beautiful exotic-looking flowers.
Native to the Australian continent, grevillea is a genus that belongs to the Proteaceae family and it has about 360 species. Even though it is an Australian native plant, grevillea can also be found in New Caledonia, Sulawesi, New Guinea, and Indonesian islands. Grevillea (also known as spider flower, toothbrush paint, and silky oak) are beautiful evergreen trees or shrubs that feature needle-like and fern-like green foliage and exotic looking flowers. Some of the exotic, beautiful grevillea flowers are fragranced, and they contain high contents of nectar that tends to attract insects, hummingbirds, birds, and other species that feed off pollen.
Grevillea has a few species that grow fast. Although, they are low maintenance plants, taking care of them can be tough. As long as the soil is well-drained, grevilleas can flourish well whether it is hot, dry, and even if the soil is of poor quality. There are also a few species in this category that can grow healthily in cold weathers, whereas the others can even get burnt if they are exposed to the slightest sunlight and some are drought tolerant.
Since grevilleas are so fascinating, it is important to take a deeper look into them.
Grevillea are considered being popular plants for the garden especially in Australia. This species has the ability to interbreed and it has a high rate of becoming a hybrid. There are a few species that have smaller shrubs, but they can grow to quite tall. The “Canberra Gem” cultivator has also earned the Royal Horticultural Society’s Award of Garden Merit.
Soft tip cuttings of grevilleas can be grown from December to March on the Southern Hemisphere, while the hard to grow species can be grown on hardy rootstocks.
Types of Grevillea
Grevillea thelemanniana baby
The grevillea thelemanniana baby is a ground cover, low growing compact full of eye-catching vibrant red flowers with yellow tips that bud during early spring and stay during the entire year. It is not the ideal plant for garden edges or planting. Its nectar content tends to attract hummingbirds and other such creatures. It grows 8 to 10 feet in height and 4 feet in width.
The grevillea moonlight features large fern-like gray leaves and ivory colored flowers that stay budded throughout the entire year. This plant requires well drained soil, the full sun, or partial shade. It is a fast growing plant that is tolerant to frost and it can do well in drier periods as well once it matures. It can grow quite fast. It is a landscape shrub and brilliant cut flower. It attracts birds and bees. This shrub can grow 8 to 12 feet and its width varies.
Grevillea lanigera is a fast growing grey grevillea that has cream and dark pink colored flowers on its shrub most of the time. This shrub needs well drained soil and it basks in partial shade or under the full sun. It is frost and sun tolerant, and it is available in different forms. It is the ideal plant to attract birds and most commonly, it is used as a hedge. It has a ground cover of 18”x6’. The G. lanigera ‘Coastal Gem’ has smaller but more compact leaves. This plant is easy to take care of and can be added to a garden for its natural beauty. The grevillea lanigera grows 1 to 6 feet in height and 6 feet in width.
Grevillea juniperina ‘molongolo’
Grevillea juniperina molongolo is a low-rise spreading shrub that has sulfur yellow apricot flowers and rich green needle-like leaves that appear during the spring, summer and wintertime. This shrub needs well drained soil to flourish and partial shade or the full sun. Once this plant matures completely, it becomes drought and frost tolerant. It is a plant which is great for embankment plantings. Grevillea junipernia molongolo is a prostate plant and it grows 6 to 15 feet in width.
Grevillea ‘juniperina ‘Gold Cluster’
The grevillea juniperina gold cluster is a groundcover shrub that is full of small yellow spider flowers that usually blossom during the winter and spring time. The flowers look beautiful when they are in contrast with the narrow, deep green creeping leaves. It is denser compared to the G. ‘Molongolo’. It is important to prune the grevillea juniperina gold cluster quite often during the early summer time because it starts growing more flowers then. It is a lovely and beautiful plant to hang on a wall or grow in a container. It is a prostate shrub that is 4 feet in width.
A grevillea banksii can be considered as a large ornamental shrub or a small-ish tree. It has a bushy growth with beautiful large flowers. It is another grevillea that flourishes in well drained soil and in the full sun. This coastal shrub flowers most of the time during the year. It is tolerant to dry periods and normal frost. However, during the dry, hot months, it is important to water the shrub thoroughly. This shrub attracts birds and it is grown by cuttings. Sometimes, instead of growing red flowers, this plant can grow white ones. It grows 6 to 25 feet in height and 6 to 12 feet in width.
Grevillea Robyn Gordon
The grevillea robyn gordon is one of the popular grevillea types. It is a round, ornamental shrub that has fern-like foliage and big red flowers that stay blossomed throughout the year. Just like the other grevillea types, this one prefers well drained soil and the full sun. It has a moderate tolerance to frost, but it is not highly tolerant to drought. It is a great shrub to attract bees and birds. However, this shrub can cause skin allergies and irritations on sensitive skin. It is commonly used as a hedge or screen. This plant grows up to 5 feet in height and 5 feet or more in width.
A grevillea robusta is a large beautiful tree that grows flowers during the summertime, wintertime, and springtime. Since it is a tree that can be quite messy, it is not the ideal plant to have in your house, especially during the spring and summer months. But, for big houses with big gardens, this tree can be an excellent shade and shelter. It is the tree that is commonly seen on the Los Angeles freeways. It can be grown as a container plant in patios or indoors as well as in gardens. It is a tree that attracts hummingbirds. This tree grows 30 to 60 feet in height and its width is variable.
The grevillea rosmarinifolia grows lusciously green with vibrant red flowers. It is a big tree which requires clipping because of its hedges and shaggy topiary. It also requires well drained soil and full sunlight. This plant has a moderate tolerance to drought and frost. The grevillea rosmarinifolia has the ability to grow 8 to 10 feet in height and 8 feet in width. Overall, it is an easy plant to deal with.
Grevillea ‘Poorinda Queen’
Grevillea poorinda queen is a big ornamental flowering shrub that has vibrant orange apricot flowers. The grevillea poorinda queen can be used as a screen or a hedge. It is a fast growing species that can do well in hardy soils and different situations such as water logging. It is a plant that attracts hummingbirds and other birds. It can be the center piece in gardens because of its visually appealing look. This plant can grow from 8 to 12 feet in height and 6 to 12 feet in width.
Grevillea ‘Poorinda Constance’
The grevillea poorinda constance is a dense shrub that has a combination of red and orange spider flowers on it especially during the fall, winter, and springtime. It is a shrub that does really well in heavy and light soils which are well drained. They also prefer being in either partial shade or under the full sun. Once they mature, they can do well in dry periods and during the heavy frost ones. They are prune to contact growth when they are young but they do not require much pruning as they get older. This dense shrub makes a great screen and hedge. It grows 6 to 8 feet in height and 6 to 8 feet in width.
Grevillea ‘Poorinda Signet’
The grevillea poorinda signet is a dense low spread shrub that has arched branches. These arched branches have small green leaves on it that are gray on the flipside with candy pink colored flowers that blossom during the winter and springtime. This shrub grows really well under the full sun and in well drained soil. It is tolerant to the hardy frost months and can do moderately well during the drought. The grevillea poorinda signet is a great specimen plant and an amazing dense hedge. It can grow 6 to 8 feet in height and 6 to 8 feet in width.
Grevillea ‘Poorinda Royal Mantle’
The grevillea poorinda royal mantle is a prostrate spreading ground cover that has deep burgundy leaves with burgundy toothbrush blossoming flowers that usually appear during the winter and springtime. This shrub is great for containers and embankments. The grevilliea poorinda royal mantle requires pruning because it grows extremely fast and vigorously. It is a hybrid of G. wilisii x G. laurifolia. It is a prostate with 12 to 16 feet width.
Grevillea ‘Poorinda Golden Lyre’
The grevillea poorinda golden lyre is a small, onametnal shrub that has rich green leaves and orange-yellow flowers. This shrub needs sun light and heavy well drained soil. This tree can do well in extended periods of frost and can do moderately well in drought. This shrub is the hybrid of Grevillea alpine x G. victoriae. It is another shrub that attracts birds and hummingbirds. This shrub grows 3 to 4 feet in height and 3 to 5 feet in width.
Grevillea ‘Poorinda Blondie’
A grevillea poorinda blondie is a vigorous, hardy, dense shrub that features toothbrush yellow and maroon flowers during the winter, spring, and summertime. This shrub does well in well drained soil when it is under the full sun. It is tolerant to drought and heavy frosted months. It can be used as a screen. It is also used as a cut flower sometimes because of its unique appearance. This shrub successfully attracts hummingbirds and bees. It grows 6 to 12 feet in height and its width is variable.
Grevillea Peaches and Cream
The grevillea peaches and cream is a long flowering shrub, which has small light pink flowers on it. This shrub does the best when it is under the sun or in partial shade in well drained soil. It has the ability to tolerate humidity, drought and frost. It is a species of grevillea which is popularly grown in southern California and it is used as a cut flower. The nectar in the flowers feeds birds. Moreover, this shrub is used as a screen and lower hedge as well. Keep in mind; it can cause irritations for sensitive skins, which is why it is important to handle this plant with care.
These are a few of the popular grevillea species. Although, it is an Australian native plant, it can be grown in different parts of the world. Sometimes this plant requires extra care, but it adds a beautiful touch to any landscape. Grevillea is a unique species that attracts the attention of all eyes.