Grevilleas are a wide group of plants, all but seven species coming from Australia. They are widespread across Australia, occurring in both cool temperate, and hot tropical climates.
There are around 250 species. About half of these are native to the south west corner of Australia. Known commonly as ‘Spider Flowers’; the Grevillea flower is more like a brush than a traditional flower. It has obscure petals, but is none the less very colourful. Flower colour varies greatly; and most hold their flowers for a long period.
Grevilleas include both small to very large plants (from prostrate ground covers, through small and medium shrubs up to large trees). Their hardiness is variable according to species. The foliage is also variable ranging from small, entire leaves to lobed or pinnate leaves. All are arranged alternately on the stems and some have hairy undersurfaces. Most have a medium to fast growth rate.
- About 50% of all Grevilleas are tropical.
- The majority of species are stenobasic (ie. having more or less one dominant stem or trunk). Twenty of the known species are trees.
- 176 of the known species are shrubs
- 17 of the known species are prostrate shrubs
Develop your ability to select and cultivate appropriate varieties of Grevilleas in different situations.
E-Learning Structure
The duration of this online course is 100 hours. This consists of 8 in-depth lessons:
- Introduction. Review of the system of plant identification, general characteristics of Grevilleas, information contacts (ie: nurseries, seed, clubs etc.)
- Culture. Planting, staking, mulching, watering, pest and disease, feeding, pruning, protection from wind, salt air, etc.
- Propagation. Methods of propagating Grevilleas. Propagation of selected varieties.
- The Most Commonly Grown Varieties.
- Other Important Groups.
- Other Grevillea Varieties.
- Making The Best Use of Grevilleas. In containers, in the ground, growing for profit etc. (to sell the plants) etc.
- Special Assignment. On one selected plant or group.
How Does A Warnborough Online Course Work?
You can start the course whenever is convenient for you. You will be studying from home and have access to support from our qualified tutors. Practical exercises and research tasks will be set at the end of each lesson – including an assignment. You will submit this assignment to your course tutor, who will mark your work and give you constructive feedback and suggestions.
If you have any questions please contact us.
