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GROWING ANNUALS BHT319

Course CodeBHT319
Fee CodeS2
Duration (approx)100 hours
QualificationStatement of Attainment

Annual Flower Growing Course

Learen to grow annual flowers, for a colourful landscape garden, potted colour or cut flowers. Study to be a better horticulturist and plantsman, to further your career prospects, or simply to persue a passion for flowers.

Course structure

This subject has 8 lessons as follows:

1. Introduction: Review of the system of plant identification, physiology, information sources

2. Culture: Planting, staking, mulching, watering, feeding, pruning, etc

3. Propagation: Methods of propagating annuals; Propagation of selected varieties of annuals.

4. Hydroponics.

5. Pest & Disease

6. Irrigation

7. Greenhouse Management.

8. Harvest, Post Harvest & Quality.

Duration: 100 hours

Aims

  • Discuss the classification of annual flowering plants through the plant naming system.
  • Discuss culture requirements of annuals.
  • Propagate annuals.
  • Explain methods of hydroponic culture in relation to annuals
  • Identify pest and diseases of annuals
  • Describe various types of irrigation systems and the water requirements of annuals.
  • Describe various greenhouses and related equipment available.
  • Determine procedures for the handling of annuals during and after harvest.
  • Design annual flower beds.

EXAMPLES OF WHAT YOU MAY DO IN THIS COURSE

  • Cut an annual flower in half. Draw it, and label the parts of the flower.
  • Prepare a soil bed and plant out different annual plants which you purchased (last lesson). Keep a daily log book of what you do and how each individual plant performs. (ie: Keep a record of the date when they are planted, how the soil is prepared, how they are planted, staked etc. Note how and when they are watered, fed, sprayed, weeded, pruned etc. Note every week or so what varieties are growing best....whether they are branching, forming buds, have weak or strong growth ..
  • Visit a nursery or garden growing annual plants. Observe how and where these plants are growing. Observe which plants are the healthiest. Are they exposed to wind, light, frost.
  • Give examples of different annuals which can be propagated by methods other than seed? Indicate the species or cultivar and the propagation method.

What are Annual Flowers?

  • Annuals are plants which are able to grow from a seed to a mature plant, flower, and produce seed all within the space of one year.
  • An annual is any plant which completes it's full lifecycle in one year.
  • Generally annuals are grown in the garden for a period of less than one year, with the expressed purpose of providing flowers and colour.
  • The major advantages of annuals are: They produce flowers quickly; and They can be changed frequently.
  • Annuals are grown both as commercial cut flower crops and as bedding plants  (Bedding plants are plants grown in a garden bed on a temporary basis).
  • Commonly grown annuals which are able to be used as both bedding plants and cut flowers include; Marigolds, Asters, Stock, Poppy, Statice, Calendula, Gypsophila and Helichrysum

Tips for Choosing What Annuals to Grow

    The following lists should only be used as a guide as there can be variation in height amongst different varieties of the same plant as well as differences in final heights due to growth conditions.

    Low Growing (less than 30cm)

    • Ageratum
    • Alyssum
    • Antirrhinum (small type)
    • Aster (dwarf types)
    • Begonia (dwarf bedding types)
    • Bellis (English daisy)
    • Brachycome
    • Calceolaria (slipper flower)
    • Cineraria (dwarf types)
    • Dianthus (pinks)
    • Impatiens (busy lizzie)
    • Linaria
    • Lobelia
    • Matthiola (stock-dwarf types)
    • Matricaria (feverfew)
    • Mesembryanthemum (livingstone daisy)
    • Mimulus (monkey flower)
    • Myosotis (forget-me-not)
    • Nemesia (dwarf types)
    • Nemophila (blue eyes)
    • Nigella (dwarf types)
    • Petunia
    • Phlox (annual phlox)
    • Portulaca (sun plant)
    • Verbena
    • Viola (pansy, viola)
    • Zinnia (dwarf types)

    Medium (30-60cm)

    • Acroclinum (everlasting daisy)
    • Antirrhinum (medium types)
    • Arctotis
    • Begonia (bedding type)
    • Calendula
    • Campanula
    • Celosia
    • Centaurea (cornflower)
    • Cheiranthus(wallflower)
    • Chrysanthemum
    • Clarkia
    • Coreopsis
    • Cosmos (some)
    • Dahlia (bedding type)
    • Dimorphotheca
    • Gaillardia (blanket flower)
    • Godetia
    • Gypsophila (babys breath)
    • Helichrysum (straw flower)
    • Heliotropium (heliotrope)
    • Iberis (candytuft)
    • Limonium (statice)
    • Matthiola (stocks)
    • Nemesia
    • Nigella (love-in-a-mist)
    • Papaver (poppy-medium types)
    • Phlox (taller types)
    • Rudbeckia
    • Salvia
    • Schizanthus (poor mans orchid)
    • Tagetes (marigold-smaller and medium types)
    • Tropaeolum (Nasturtium-medium types)
    • Zinnia

    Tall growing (greater than 60 cm)

    • Althaea (hollyhock)
    • Amaranthus
    • Antirrihnum (snapdragon-tall types)
    • Cleome (spider flower)
    • Cosmos (tall types)
    • Helianthus (sunflower)
    • Helichrysum (strawflower-tall types)
    • Lathyrus (sweet pea)
    • Lunaria (honesty)
    • Molucella (bells of Ireland)
    • Papaver (poppy-tall types)
    • Rudbeckia (tall types)
    • Scabiosa
    • Tagetes (marigolds-tall types)
    • Tropaeolum (nasturtium-tall types)