AFRICAN VIOLETS VHT105

Become an African Violet and Gesneriad Expert

Here is your chance to achieve outstanding results with African Violets.

Designed for the African Violet enthusiast, this course covers everything from potting and feeding, to pests and propagation. You learn how African Violets are classified, and cover the exciting range of varieties available.

• Learn to identify and grow lots of different gesneriads, as indoor plants, tropicals or greenhouse specimens.
• Professional Development for Nurserymen and horticulturists.
• Up-skill as an amateur plant collector.

Develop a broadened knowledge of African violet cultivars and cultivation; and in doing so, provide a foundation upon which you can better pursue your interest in these fascinating plants.

• Identify a series of possible locations for growing a collection of African Violet Cultivars.
• Compare and select the best location from the available options.
• Identify factors that will affect the successful culture of African Violets in the selected location.
• Determine criteria for selecting cultivars of African Violets to be included in the collection.
• Select cultivars of to be included in the collection.
• Choose plant establishment techniques appropriate to the project.
• Determine a routine 12 month maintenance program for a selected collection of cultivars to be grown in a specified situation.

Tips for Growing and Knowing African Violet Relatives

There are around 125 genera in the Gesneraciaceae family. While African Violet and Gloxinia are perhaps the two most widely cultivated of those, there are many others that are in cultivation and worth considering for growing alongside African Violets.

Most Gesneriads like similar environmental conditions; so growing them together in the same shade house or verandah (in a warm climate) or greenhouse (in a colder climate) can be a good idea.

Some of these Gesneriads are listed below:

 Achimenes

• Popular in cultivation for hundreds of years.
• Propagate by root division, stem, tip or leaf cuttings.
• Produce underground rhizomotous growths.
• Can be kept relatively dry when dormant; water again when the weather warms and they start to shoot.
• Never let soil dry during the growing season though.
• Excellent as basket or indoor pot plants.
• Some upright growing types can get to 30cm tall but most are smaller.
• Respond well to artificial fluorescent lights.

Aeschynanthus (syn. Trichosporum)

• Some of the approximately 170 species are known by the common name "Lipstick Plant".
• Most of these are trailing or epiphytic plants. They can be ideal in hanging baskets.
• Tubular flowers are commonly red or orange.

Columnea

• Indigenous to Central and South America and the West Indies.
• Fibrous rooted plants with long spreading stems that cover the ground or look best in a hanging basket.
• Stunning lipped tubular flowers -commonly shades of red, yellow or orange.
• Leaves can be tiny, button like or large -up to 12cm long on some species (mostly up to 2cm on popular cultivated species).
• Do not like cold conditions.

Episcia (Flame Violet)

• Herbaceous perennials.
• Stoloniferous growth habit.
• Grow mostly in shaded places.
• Around 35 species mostly from Central America, Brazil and the Antilles.
• Have distinct leaves with coloured metallic tones.
• Leaves may or may not have prominent decorative veins.
• Leaves are hairy and an elliptic to ovate shape.
• Normally do better with a little more light than an African Violet.

Streptocarpus

• Around 150 species.
• Very few tolerate any frost; though most are more cold tolerant than African Violets.
• Some occur naturally in shaded forests, others occur in more open, but usually moist places like the edge of a stream.
• Generally Streptocarpus look best during the warmer months if and when they are kept moist, and humid.

Other Genera include: Alloplectus, Asternanthera, Bellonia, Beslaria, Boea, Briggsia, Capanea, Chirita, Chrysothemis, Codonanthe, GesneriaKohleria, Loxostigma, Lysionotus, Monophyllaea, Nautilocalyx, Nematanthus, Niphaea, Opithandra, Paradrymonia, Petrocosmea, Phinaea, Platystemma, Ramonda, Rhynchoglossum,Sarmientia, Smithiantha and Titanotrichum.

Lesson Structure

There are 8 lessons in this course:

1. Introduction
   • What is an African Violet
   • Plant name pronunciation
   • Review of the system of plant identification
   • Introduction to Gesneriads
   • Classification of Gesneriaceae
   • Introduction to most commonly grown African Violet Species
   • Information contacts (ie: nurseries, seed, clubs etc.)
   • Plant Reviews
2. Culture
   • Understanding how plants grow
   • Soils ad nutrition
   • African Violet potting mixes
   • Other cultural practices -Planting, watering, feeding, etc.
   • Review of Gesneriad Genera -Columnea, Streptocarpus, Episcia, Aeschynanthus etc
   • Plant Reviews
3. Propagation
   • Sexual and asexual explained
   • Propagation aids -greenhouses, hotbeds, cold frames, misting etc.
   • Cuttings
   • Seed
   • Division
   • Plant Reviews
4. Pests & Disease
   • Plant maintenance and health
   • Identifying problems
   • Controlling problems
   • Reviewing pest, disease and environmental issues that can confront African Violets
   • Plant Reviews
5. Light and its Affects
   • Understanding light affects on african violet flowering
   • Artificial lighting
   • Plant Reviews
6. Greenhouse Culture
   • The greenhouse system
   • Components of a greenhouse (floor, structure, ventilation, heating, etc)
   • Types off Greenhouses
   • Shadehouses
   • Coldframes
   • Heated propagators
   • Environmental controls
   • Heaters, Ventilators, etc
   • Plant Reviews
7. Ways to Use African Violets
   • Containers, in the ground, in greenhouses, growing for profit (to sell etc.)
   • Review of popular cultivars
   • Plant Reviews
8. Special Assignment
   • PBL Project: Planning the establishment of a collection of Gesneriads, for a specific (real or hypothetical) location.

Aims

• Describe how African Violets and related plants are classified and the plant naming system.
• Describe the cultural requirements of African violets.
• Select appropriate propagating materials and using them, propagate African violets.
• Identify and control pest and diseases of African violets.
• Discuss the role that light plays in the growth of African violets.
• Describe greenhouses and other environmental control equipment used for growing African violets.
• Describe the various ways in which African violets can be grown.
• Demonstrate the knowledge acquired for a specific group or individual plant in the Gesneriaceae family through research.

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