Organic horticulture

Organic horticulture is the science and art of growing fruits, vegetables, flowers, or ornamental plants by following the essential principles of organic agriculture in soil building and conservation, pest management, and heirloom variety preservation.

The Latin words hortus (garden plant) and cultura (culture) together form horticulture, classically defined as the culture or growing of garden plants. Horticulture is also sometimes defined simply as “agriculture minus the plough.” Instead of the plough, horticulture makes use of human labour and gardener’s hand tools, although small small machine tools like rotary tillers are common now.

General

Vermicompost, Mulches, cover crops, compost, manures, and mineral supplements are soil-building mainstays that distinguish this type of farming from its commercial counterpart. Through attention to good healthy soil condition, it is expected that insect, fungal, or other problems that sometimes plague plants can be minimized. However, pheromone traps, insecticidal soap sprays, and other pest-control methods available to organic farmers are also sometimes utilized by organic horticulturists.

Horticulture involves five areas of study. These areas are floriculture (includes production and marketing of floral crops), landscape horticulture (includes production, marketing and maintenance of landscape plants), olericulture (includes production and marketing of vegetables), pomology (includes production and marketing of fruits), and postharvest physiology (involves maintaining quality and preventing spoilage of horticultural crops). All of these can be, and sometimes are, pursued according to the principles of organic cultivation.

Organic horticulture (or organic gardening) is based on knowledge and techniques gathered over thousands of years. In general terms, organic horticulture involves natural processes, often taking place over extended periods of time, and a sustainable, holistic approach - while chemical-based horticulture focuses on immediate, isolated effects and reductionist strategies.

Organic gardening systems

There are a number of formal organic gardening and farming systems that prescribe specific techniques. They tend to be more specific than, and fit within, general organic standards. Biodynamic farming is an approach based on the esoteric teachings of Rudolf Steiner. The Japanese farmer and writer Masanobu Fukuoka invented a no-till system for small-scale grain production that he called Natural Farming. French intensive and biointensive methods and SPIN Farming (Small Plot INtensive) are all small scale gardening techniques.

A garden is more than just a means of providing food, it is a model of what is possible in a community - everyone could have a garden of some kind (container, growing box, raised bed) and produce healthy, nutritious organic food, a farmers market, a place to pass on gardening experience, and a sharing of bounty, promoting a more sustainable way of living that would encourage their local economy. A simple 4' x 8' (32 square feet) raised bed garden based on the principles of bio-intensive planting and square foot gardening uses fewer nutrients and less water, and could keep a family, or community, supplied with an abundance of healthy, nutritious organic greens, while promoting a more sustainable way of living.

Other methods can also be used to supplement an existing garden. Methods such as composting, or vermicomposting. These practices are ways of recycling organic matter into some of the best organic fertilizers and soil conditioner. Vermicompost is especially easy. The byproduct is also an excellent source of nutrients for an organic garden.

Pest control approaches

Differing approaches to pest control are equally notable. In chemical horticulture, a specific insecticide may be applied to quickly kill off a particular insect pest. Chemical controls can dramatically reduce pest populations in the short term, yet by unavoidably killing (or starving) natural control insects and animals, cause an increase in the pest population in the long term, thereby creating an ever increasing problem. Repeated use of insecticides and herbicides also encourages rapid natural selection of resistant insects, plants and other organisms, necessitating increased use, or requiring new, more powerful controls.

In contrast, organic horticulture tends to tolerate some pest populations while taking the long view. Organic pest control requires a thorough understanding of pest life cycles and interactions, and involves the cumulative effect of many techniques, including:
• Allowing for an acceptable level of pest damage
• Encouraging predatory beneficial insects to flourish and eat pests
• Encouraging beneficial microorganisms
• Careful plant selection, choosing disease-resistant varieties
• Planting companion crops that discourage or divert pests
• Using row covers to protect crop plants during pest migration periods
• Rotating crops to different locations from year to year to interrupt pest reproduction cycles
• Using insect traps to monitor and control insect populations

Each of these techniques also provides other benefits, such as soil protection and improvement, fertilization, pollination, water conservation and season extension. These benefits are both complementary and cumulative in overall effect on site health. Organic pest control and biological pest control can be used as part of integrated pest management (IPM). However, IPM can include the use of chemical pesticides that are not part of organic or biological techniques.

See also

• List of organic gardening and farming topics

References

Bibliography

• Eliot Coleman. The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener. Chelsea Green, 1995. ISBN 0875967531
• Karan Davis Cutler, Barbara W. Ellis, and David Cavagnaro. The Complete Vegetable & Herb Gardener : A Guide to Growing Your Garden Organically. Wiley, 1997. ISBN 0028620054
• Tanya L.K. Denckla. The Gardener's A-Z Guide to Growing Organic Food. Storey, 2004. ISBN 1580173705
• Barbara W. Ellis and Fern Marshall Bradley, eds. The Organic Gardener's Handbook of Natural Insect and Disease Control: A Complete Problem-Solving Guide to Keeping Your Garden and Yard Healthy Without Chemicals. Rodale, 1996. ISBN 0875967531
• Anna Kruger, ed. Rodale's Illustrated Encyclopedia of Organic Gardening. DK, 2005. ISBN 0756609321
• Edward C. Smith. The Vegetable Gardener's Bible. Storey, 2006. ISBN 1580172121
• Steve Solomon. Gardening When It Counts: Growing Food in Hard Times. New Society, 2006. ISBN 086571553X
• Paul Stamets. Mycelium Running: How Mushrooms Can Help Save the World. Ten Speed, 2005. ISBN 1580085792
• HRH The Prince of Wales and Stephanie Donaldson. The Elements of Organic Gardening. Kales, 2007. ISBN 0967007690

External links

• Canberra Organic Growers Society, Organic gardening in Canberra
• City Farm Perth, Organic Community Garden, Perth
• City Farmer, Organic gardening in Vancouver
• Greening Your Garden - Native plants, Caring for soil, Watering, Pest Control
• Society for Organic Urban Land Care, Victoria, B.C. standards document
• Garden Organic, the UK's leading organic horticulture charity
• The Soil Association, the UK's leading environmental charity promoting sustainable, organic farming
• The Center for Agroecology & Sustainable Food Systems at UC Santa Cruz, California
• Insect Management for Organic Vegetable Gardens, Kansas State University
• Guide to growing chili peppers