Perennial Flower Gardening Course
- Learn to identify, select and grow perennial plants for floral and foliage displays.
- A course for nurserymen, gardeners, garden designers, plant breeders, plant collectors -anyone with a passion for perennials.

COURSE STRUCTURE
There are 8 lessons as follows:
- Introduction
- Review of the system of plant identification
- Physiology
- Information sources
- Culture
- Planting
- Staking
- Mulching
- Watering
- Feeding
- Pruning, etc.
- Propagation and Hybridization
- Review of Major Types of Perennials
- Pests & Disease
- Irrigation & Hydroponic Culture Techniques
- Landscaping with Perennials
- Further Uses
Each lesson culminates in an assignment which is submitted to the school, marked by the school's tutors and returned to you with any relevant suggestions, comments, and if necessary, extra reading.
Duration: 100 hours
Scope of the Course
This course is broad in scope, covering all types of perennials. It provides a pathway to learning about
perennials that also allows each individual student to make choices about the types of perennials they wish to focus their attention on.
In many of the tasks you carry out, you will have an opportunity to focus on the genera that most interest you; and receive mentoring from horticultural experts, to help develop your knowledge with respect to those genera.
Perennials cover a wide range of plants including both ornamental and useful plants. There are perennial plants for all situations.
Botanists may call perennials any plants that live for several years (ie. anything that is not an annual or a biennial). Gardeners and horticulturists however, generally refer to perennials as plants which have softer tissue (ie. are not woody), as well as living for several years.
The term biennial is also sometimes used, referring to a plant that lives for and completes its life cycle in 2 years. A perennial may therefore be distinguished from annuals and biennials as having a longer lifespan than those two types of plants.
Horticulturists and gardeners commonly think of two types of perennials:
- herbaceous perennials
- evergreen perennials
Herbaceous perennials die back for during part of the year. Commonly, the whole of the top of the plant may die back, leaving a crown or swelling at ground level, and the roots below. Some however may only loose part of the top growth. Evergreen perennials maintain leaves (at least some) throughout all seasons.
Some Perennials to Grow
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Garden-gate Plants: |
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Tall Bearded Iris |
Flower colour range, season spring/summer, height 60-90cm |
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Day Lilies (Hemerocallis) |
Flower colour range, season early/mid summer, height 75cm |
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Border Plants: |
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Aster |
Dwarf flowers in summer, tall flowers in autumn |
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Anthemis tinctoria |
Yellow/cream, 30cm |
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Aquilegia |
60cm, early summer, attractive foliage and flowers |
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Heleniums |
Yellow/brown, late summer-autumn, 60-125cm |
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Rudbeckias |
Yellow, 1.25m, late summer |
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Accent Plants: |
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Cynara carduncaulus |
1m high, 2m wide, attractive foliage |
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Miscanthus sinensis |
2m, decorative foliage (many cultivars) |
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Phormium |
To 1.5m, strap-like attractive foliage (many cultivars |
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Romneya coulteri |
2m, white/yellow flowers summer-autumn (sheltered position) |
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Yucca |
Cream bells in summer-autumn, 2m, attractive rosette foliage |
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Foliage Plants: |
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Arum italicum |
Attractive foliage, 45cm ( a weed in some countries) |
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Bergenia cordifolia |
Round leathery, 25cm very drought tolerant |
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Eomecon chionanthum |
Fig like leaf, ht.30cm |
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Dianella species |
Flax-like small plant, 70cm (blue flowers and berries) |
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Diplarrhena morea |
Iris-like foliage, 75cm |
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Heracleum mantegazzianum |
Large, coarsely divided, 3 high |
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Iris |
Especially the variegated leaf variety, reed-like foliage, |
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Lavatera olbia |
Vine-shaped leaves, 2m |
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Melianthus species |
Grey-green fingered foliage, up to 2m high |
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Orthrosanthus multiflorus |
Iris-like foliage, 75cm |
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Paeonia species |
Deeply divided foliage, ht up to 2m |
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Patersonia glauca |
Iris-like foliage, 45cm |
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Perennials for under Trees: |
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Cyclamen sp. |
Attractive foliage and flowers, bulbous |
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Euphorbia robbiae |
Rosettes of dark rounded foliage |
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Helleborus sp. |
Divided leaves, low habit, attractive flowers |
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Pachysandra terminalis |
Low, evergreen, dense, 10cm high |
ENROL AND LEARN MORE