Orchid Culture 100 Hours Certificate Course
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Orchid Culture 100 Hours Certificate Course
Orchid Culture course online.
Whether you are an enthusiastic amateur, or working professionally in horticulture looking to increase your areas of expertise, this course will help give you a solid foundation in order to become an orchid expert.
You will learn to differentiate between different orchid types, understand the differing cultural requirements for various orchids, grow orchids outside, in a greenhouse or as an indoor plant, choose the best orchid for a given situation and work with orchids.
You will find this course useful if you are:
Passionate about orchids.
An enthusiastic amateur or professional orchid grower.
A nursery person or plant breeder.
A horticulturist or plant collector.
Learning Goals: Orchid Culture BHT232
- Understand the system of plant classification and naming
- Explain appropriate way to grow a range of different orchid species.
- Describe common methods of Orchid Propagation
- Understand the basics of the structure, taxonomy and culture of Cymbidiums and Dendrobiums
- Describe the identification and culture of some of the more commonly grown orchids apart from Dendrobiums and Cattleyas
- Describe the identification and culture of some of orchids native to your locality or region.
- Describe a range of alternative ways in which to grow orchids
- Research commercial orchid growing
Lesson Structure: Orchid Culture BHT232
There are 8 lessons:
- Introduction to Orchid Species
- Plant Names and the System for Naming Orchids
- Orchid sub families and tribes
- Plant Name Pronunciation
- Orchid Plant structure.
- Overview of Growing Orchids
- Guidelines; temperature, light, humidity, ventilation, watering, feeding, potting mixes
- Growing Cattleyas
- Substrates for Geophytes and Epiphytes
- Understanding Soils; texture, pH, nutrient availability, fertility,
- Mycorrhyza and Orchids
- Propagating and Potting Media
- Nutrients and Nutrition
- Plant Health; orchid pests, orchid diseases, other problems
- Pruning Orchids
- Watering Orchids
- Sexual vs. asexual propagation
- Asexual Propagating sympodial Orchids
- Asexual Propagation of Monopodial Epiphytes
- Aerial Offset Propagation (Keikis)
- Propagating Orchids by Seed
- Hybrid Seed Production
- Harvesting Orchid Seed
- Flasking Method of Seed Sowing
- Tissue (Meristem) Culture of Orchids
- Propagation Equipment; greenhouses, hotbeds, cold frames, mist systems, furo light boxes, etc
4 Cymbidiums And Dendrobiums
- Cymbidium culture
- Dendrobium Types -soft cane, hard cane, black haired
- Dendrobium Culture
- Dendrobium species
5 Cattleyas, Vandas And Other Commonly Grown Orchids
- Cattleya varieties and culture
- Vandas; main species and culture
- Oncidium -types (climbing and spreading), culture
- Paphiopedalum (Slipper Orchids)
- Phalaenopsis (Moth Orchids)
- Pleione (Indian Crocus)
- Crucifix Orchids (Epidendrum)
6 Australian Native Orchids
- Endemic, naturalised and indigenous plantsProblem Based Learning Project, with the following Learning Ourtcomes:
- Determine which species of orchids are most commonly sold in your locality.
- Determine orchid varieties which are being grown in your locality
- Determine any orchid genera suited to growing in a warm climate.
7 Growing Orchids: Commercial and general uses
- Cut Flower Production
- Basket Plants
- Review of Orchid Genera for Cut Flower Production
- Environmental Requirements for many significant orchid genera
- Vanilla Bean Culture and Production
- Greenhouse Management for Orchids
8 Harvest and Special Project On One Group Of Orchids
- Crop Scheduling; Writing a schedule for production of an Orchid Crop
- Harvest and Post Harvest of Selected Orchid Cut Flowers; bud opening, transport, storing flowers, etc
- Cattleya, Cymbidium, Dendrobium
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.
What You Will Do In This Course:
- Compile a resource file or organisations and information sources relevant to orchids.
- Obtain and orchid flower; draw and label this flower.
- Review 56 different orchid species in detail.
- Obtain soil from two different areas (two different types of soils). Using the tests in the Lesson notes, do the following, name each of these soils and test the drainage of each soil.
- Obtain (or make up) a potting mix which you consider appropriate for growing orchids.
- Visit a nursery or garden growing orchids. Notice how and where these plants are growing.
- Determine which plants are healthiest and assess the conditions in which they are growing.
- Obtain enough plant material to propagate four different orchids. Propagate these orchids vegetatively.
- Visit a nursery, or some other place which sells a wide range of different types of pots.
- Consider the properties of the pots you see for sale and their suitability for growing orchids in. Note down the prices of each.
- Investigate further into tissue culture processes specific to Orchids beyond the notes offered in the course.
- Determine which species of orchids are most commonly sold in your locality.
- Carry out research and look through any references you have and determine any orchid genera (not yet covered in this course), which are suited to growing in a tropical or sub-tropical climate.
- Visit (virtual or real) a plant nursery which sells a range of native orchids. List differentat orchid varieties which are being grown in your locality.
- Visit a florist shop. Notice what orchids are being sold; how they are presented for sale, how they are stored etc
- Evaluate the cultural practices observed (or investigated) in the different enterprises which you considered in your set task.
Excerpt From The Course
This is a very diverse group, with an immense number of hybrids and varieties. Cymbidiums are more cold tolerant than Cattleyas (they withstand temperatures to around 7 degrees Celsius); hence more are commonly grown in cooler areas. In cool areas many people have outstanding success with Cymbidiums grown in a shade house, on a veranda or under the protection of a large tree.
Watering is ceased over winter, and in wet areas, some people turn pots on their side for a period to stop the roots getting too wet and rotting.
Cymbidiums will perform better if winter temperatures can be kept around 10ºCelsius (perhaps bring them indoors over winter). Flower spikes develop over winter and bloom throughout the spring. Temperatures around 20‑27º Celsius are preferred over summer.
All Cymbidiums prefer indirect sunlight, particularly once flowers open, however some are more sun tolerant than others. Pink or red Cymbidiums tolerate brighter light than green flowering types. Yellow and white flowering varieties vary in their light tolerance.
Every variety of Cymbidium needs to reach a certain size before it will flower. This varies from one variety to the next: for one it may require three mature bulbs, and for another three times that number. Cymbidiums can be grown from back bulbs (pseudo bulbs), similar to the way Cattleyas are propagated, however with Cymbidiums, one pseudobulb is sufficient for a new plant.
Bulb rot is common if pots get over wet in summer (control with a Fongarid drench). Black leaf spot often occurs ‑ control with a Mancozeb spray. If the summer is dry, bulb rot is unlikely, but mites are more likely. Watering in the evening in summer helps drop the root temperature for the night, which in turn helps initiate flowering.
In very hot late summer conditions, apply a weak Epsom salts solution to Cymbidiums weekly.
Feed Cymbidiums regularly over spring and autumn, but not through late summer - being short on nutrients in January/February, helps promote flowering.
There are several different groups of Dendrobiums:
1. Soft Cane ‑The cane is generally swollen or thick and soft inside.
2. Black Haired (Nigro‑hirsute) ‑canes are covered by short black hairs.
3. Hard Cane ‑canes are thin and long
As a group, Dendrobiums are diverse both in how they look and how they need to be treated. Many are native to Australia while many others are exotic from Asia. Though most Dendrobiums are epiphytes and many need to be grown on a slab of fern or timber; some will grow quite well in a pot.
There are Dendrobiums which will grow in all types of climates from the tropics to cool temperate areas, though most come from mild or warm climates. If we were to generalize the most important requirement is fresh air or good ventilation, followed by appropriate shade. Over watering is always a danger with Dendrobiums grown in pots. Many can be grown by division of offsets or separation. The pseudobulbs of Dendrobiums are commonly elongated and look like a piece of cane, hence are commonly called canes.
Need long dry period
Very open mix
Dry out over winter
Epiphyte‑fern slab is ideal
Prefers bright light
Pot or Epiphytic or lithophyte
Pot or epiphyte or lithophyte
Very warm climates
Epiphyte or lithophyte
Pot or lithophyte
At least 50% shade
Prefers bright light
Epiphyte or (Sydney rock orchid) or lithophyte
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