Grevillea plant care: How to grow grevilleas in the landscape
The following are some things that you need to know about grevillea plants when growing them in your garden. You will learn how to choose the right type of soil, which types of fertilizers and pesticides are best for your needs, what kind of lighting is needed, and much more!
What are grevilleas?
Grevilleas (Grunia sp. or G. glauca) are shrubs with large, round leaves that grow up to 2 feet tall and wide. They are native to Europe and Asia but they were introduced into North America in the late 1800’s where they became popular ornamental plants. Today, there are over 100 species of grevilleas worldwide, most of which prefer moist conditions. Some of these species require full sun while others like the shade provided by grevilleas. Grevilleas are hardy plants that thrive in a variety of climates and soils.
How to choose the right type of soil for grevilleas?
Grevillea plants prefer rich, loamy soil with good drainage. If you live in a dry climate, then it may be necessary to provide additional moisture through rainwater catchment systems such as cisterns or ponds. You can also create a self-watering system where water is delivered directly to the root zone.
What type of soil should I avoid?
Grevilleas should be planted in soil that has good drainage. These plants cannot survive in swampy or waterlogged conditions.
How to grow grevilleas in containers: Grevilleas can be grown both in containers and directly in the ground. Their roots do not like to be potbound, so it’s best to transplant them into a larger container once they outgrow their current one.
You can also plant them directly into the ground as long as you are sure that the soil has good drainage and provides the nutrients that they need.
How much sun or shade do grevilleas require?
Grevilleas prefer full sun but in hotter, dryer climates they do better with some afternoon shade.
Does my grevillea need any special care?
Grevilleas enjoy well-drained soil. The best way to achieve this is to add plenty of organic matter such as peat moss, composted manure, and shredded leaves. You should also create a water basin around the base of the plant so that water is held near the roots and doesn’t drain too quickly. This will help promote new root growth for your grevillea.
How can I propagate grevilleas?
Grevilleas can be easily propagated from stem cuttings. Take 4-inch cuttings from young, succulent stems that have grown indoors or outdoors over the last few months. Remove the lower leaves and ensure that the cut ends are free of sap. Dip the lower end of the cutting in rooting hormone and then insert it into a seedling pot that contains moistened perlite.
How do I care for my grevilleas?
During the warm months, fertilize your grevillea monthly with a diluted solution of water-soluble fertilizer. This will keep them looking nice and healthy.
Pests: Slugs, snails, aphids, and mealybugs are just some of the pests that prey on grevilleas. Use insecticidal soaps or neem oil to discourage these pests from destroying your grevillea plants.
Diseases: Grevilleas are not prone to many diseases, however they can be affected by gray mold and root rot. To prevent your grevillea from getting these diseases, water the soil and avoid splashing the foliage when watering.
You can also place sand bags around the base of the plant to ensure that the soil stays dry around the roots.
Grevillea Care: How To Care For A Grevillea Plant
Grevilleas (Grevillea sp. and hybrids) are a diverse group of plants that can be found in a wide range of environments, from semi-arid areas to rain forests.
Grevilleas are widely grown in Australia and are popular in gardens around the world due to their attractive flowers, which come in a wide range of shapes, sizes, and colors. In fact, there are more than 850 known species of grevillea!
These plants have many different uses. Some of them have been used as bush medicine for centuries and others have been used as garden plants since the arrival of Europeans in Australia.
Today, many grevilleas are popular ornamental flowering plants.
If you’d like to know how to grow grevilleas, read on! In this guide, you’ll learn all about these versatile plants, from how to grow grevillea from cuttings to how to care for grevilleas over time.
You will also learn what types of grevilleas are best for your region and how to differentiate among the various species.
Grevillea Plant Types and Growing Conditions
The first thing you need to know about growing grevilleas is that there are two main types: evergreen and deciduous.
Evergreen types keep their leaves all year long while deciduous types shed most of their leaves during the winter months.
Grevilleas can grow in a variety of conditions and climates. Some types of grevilleas can be found growing wild in tropical rain forests, semi-arid grasslands, deserts, and even mountainous terrain.
Most grevilleas grow best in partial shade to full sun.
Most types of grevilleas are drought tolerant once they mature and a few types can even survive in wet soil or shallow water. They can also survive in highly acidic or alkaline soil, although most prefer neutral soil.
Although some grevilleas are short and shrubby, they can also grow into small trees up to 30 feet in height!
Most types of grevilleas produce flowers, but a few grevilleas produce seeds that are eaten by both humans and birds.
How To Grow Grevilleas From Cuttings
Grevilleas can be propagated easily from cuttings. To propagate your grevillea from cuttings, choose healthy grevillea branches between one and three feet long.
Cut the branch just below a node and remove the leaves from this stem.
Place the grevillea cutting in a dry, well-draining medium such as sand or perlite. Make sure that you keep the cutting slightly hydrated by misting the sand every few days.
Keep the sand moist, but not wet. You’ll know the cutting is ready to be transplanted when it develops its own roots in about a month or when you see new growth.
How To Care For A Grevillea Plant
The beautiful bloom on your grevillea won’t last long unless you provide proper care for your plant. If you don’t, the bloom will soon fall off and your grevillea will produce no more flowers.
Below are some tips to help you care for your grevillea so that it will maintain its appearance and keep blooming as it grows.
Water your grevillea on a regular basis to keep the soil consistently moist. Most grevilleas prefer dry soil, so make sure you don’t over-water the plant or keep the soil wet for extended periods of time.
Grevilleas prefer warm soil. Make sure the soil where your grevillea is planted stays between 65 and 85 degrees Fahrenheit.
Most grevilleas require full sun, so plant it in an area that gets six to eight hours of direct sunlight per day.
Most grevilleas will grow in any type of soil, but some will need specific types of soil to thrive.
Sources & references used in this article:
Cutflower characteristics of terminal flowering tropical Grevillea: a brief review by PR Beal, DC Joyce – Australian Journal of Experimental Agriculture, 1999 – CSIRO
Use of native and exotic garden plants by suburban nectarivorous birds by K French, R Major, K Hely – Biological Conservation, 2005 – Elsevier
Cold Hardiness of Grevillea in Western Oregon by N Bell, H Stoven, JS Owen, JE Altland – HortTechnology, 2020 – journals.ashs.org
Grevilleas as Plant Allergens by C Jones – anpsa.org.au
Micropropagation of Australian native ornamental grevilleas© by J Puthiyaparambil – … of the International Plant Propagators’ Society 1174, 2016 – actahort.org
Foraging behaviour of the black flying-fox (Pteropus alecto) in the urban landscape of Brisbane, Queensland by N Markus, L Hall – Wildlife Research, 2004 – CSIRO