How to Grow Grevillea - Planting & Caring

By Sharon & Team   /   Shrubs Category   /   2022

Grevillea, also known as spider flower, is a genus of about 360 species of flowering plants in the family Proteaceae, native to rainforests, woodlands and heathland of Australia, New Guinea, Indonesia, the Philippines and Sulawesi. The genus was named after Charles Francis Greville, co-founder of the Royal Horticultural Society.

How to Grow Grevillea - Planting & Caring

Growing Easiness

Is it easy to grow Grevillea plant? The Grevillea plant is an easy plant to take care of. There are small difficulties that you may encounter, but nothing that is unmanageable. With the proper care, this plant will thrive and provide you with beautiful flowers.

Plant Size

How big can it be? Because they are such a varied genus, they can range in size from small shrubs only a few inches tall to large trees up to 2 meters in height.

Growth Rate

How fast is the growth? Sometimes, the growth is so rampant that it's difficult to keep the plants under control. If you're growing Grevillea in your garden, you'll need to keep an eye on the plant and prune it regularly to prevent it from taking over.

Grevillea Basic Knowledge

Plant Form Shrub
Family Proteaceae
Origin Australia, New Guinea

Lifespan, Perennial or Annuals

How long is the lifespan? Sometimes, a plant will live for many years, while others will only last a few. The average lifespan of a Grevillea plant is around 20 years. However, some plants have been known to live for as long as 100 years.

Ideal Temperature

What is the ideal temperature? The plant grows in warm weather conditions. The upper limit is 75,2 degrees Fahrenheit, in the winter the lower 46,4-50 degrees Fahrenheit. However, it can tolerate short-term frosts.

Humidity

What about the humidity? The reason for this is to prevent the formation of spider mites. Spider mites love dry conditions. by keeping the leaves of the Grevillea plant moist, it will create an environment that is not conducive to spider mites.

Light Requirement

What amount of light this plant needed? Since these Australian natives are used to long, hot days with plenty of bright sun, they'll do best in your garden if given full sun. They can also tolerate some afternoon shade, especially in hot summer climates. If your Grevillea is not blooming well, check its exposure to sunlight. It may be getting too much shade.

Soil Composition

What is good soil for Grevillea? Eventually, the plant will need to be transferred to a bigger pot with fresh soil. For soil preparation: 1 part of the leaf land, 2 parts of coniferous land, 1 part of coarse-grained sand or perlite, 1 part of peat. The pot should have a hole for drainage.

Watering Time

How much I must water Grevillea? So, I would water it every 8 days, giving it a good amount of water so that the soil is moist, but not soggy. In the winter, I would water it less, letting the soil dry out a bit between watering. I would also use soft water for irrigation.

Fertilizing and Nutritient

About fertilizer. While Grevilleas arent too demanding when it comes to fertilizer, they will respond well to regular feeding. For best results, feed your Grevillea plant with a complex soluble fertilizer once every two weeks from spring through autumn.

Reproduction

How to reproduce Grevillea? When and how to propagate Grevillea. The Grevillea plant can be propagated by seed or by cutting. For seed propagation, the seeds must be fresh, as they quickly lose their germination. The seeds are sown in a mixture of leaf land and sand with the addition of sod and humus earth to a depth of 1 cm and germinate at a temperature of 71,6-77 ° F. Germination occurs after about 2 weeks. When seedlings form the second leaf, a pick is performed. Then they are seated in separate pots. For propagation by cutting, cuttings are taken in summer under diffuse illumination. The cuttings are rooted in a mixture of sand and peat in a ratio of 2: 1. The bottom of the pot is covered with drainage. Rooting occurs at a temperature of 68-77 ° F and takes about 2 weeks.

Bloom

Why Grevillea won't bloom? So, the flowers are orange, collected in a brush. But if you put them in the room, they will not bloom.

Transfer or Repotting

How much I must water Grevillea? The best time to transfer your Grevillea is in spring, once a year in March. You'll know it's time when the roots appear from the drainage hole. When transferring, take the pot 1.5 times more than the previous one.

Caring The Grevillea

How to care the plant? While it is possible to grow Grevillea from seed, it is generally easier to propagate from cuttings taken from an existing plant. Spring is the best time to take cuttings, which can be done by cutting the shoots in half to form the crown. The cuttings can be planted immediately, or kept in a cool, shady place until ready to plant. Grevilleas do not tolerate hard water, so if your tap water is hard, it is best to use rainwater or distilled water for watering. In the summer, Grevilleas can be taken out on the street.

Pests & Challenges

What is the challenge when caring Grevillea plant? The reason is that it is affected by spider mites, mealybugs, as well as aphids. All of these pests are difficult to control and can quickly kill a Grevillea plant. The best way to prevent these problems is to grow the plant in a well-ventilated area and to keep the soil moist.

Toxic & Poisonous Type

Are Grevillea poisonous? While not all Grevillea species are toxic, some contain toxins that can cause health problems if ingested, including vomiting, diarrhoea, and heart and respiratory problems. The toxins are found in the plant's leaves, flowers and seeds, and can cause skin irritation if they come into contact with the skin.