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About Me
Don Cox Certified Arborist
Horticulture Consultant
Plant Health Care
Urban Forestry and
Tree Maintenance Specialist
+66 8 3860 9901 Thailand mobile
+852 9095 0696 Hong Kong mobile
Don has over 40 years of experience and education in tree and landscape maintenance.
Son of a horticulturist-landscape architect, Don grew up around plant nurseries, parks, arboretums, landscaping and tree work. He's been a nurseryman, licensed landscape contractor, tree worker/foreman, tree service owner, tropical reforestation worker, orchard manager, consulting arborist, estimator and trainer. He’s lived and worked in Arizona, California, Hawaii, Hong Kong, India, and Thailand.
Don's early education and experience came from apprenticing with his father and other master horticulturists, arborists and organic farmers. His formal education includes college coursework in biological sciences, pest management, plant pathology, and business management.
Don's orientation to horticulture is comprehensive plant health care, integrated pest and disease management, environmentally safe methods and materials, and working to enhance the natural form, beauty and productivity of plants. Don loves trees, he knows a lot about them and he likes to save them if he can.
Specialties:
Tree and landscape maintenance advisor
Plant Health Care and Integrated Pest Management
Diagnosis of plant problems
Pest and disease control – “least toxic” approach
Custom soil analysis and prescription fertilization / amendments
Tree risk assessment and hazard abatement
Construction site tree preservation
Arborist reports and specifications
Tree and shrub pruning & removal recommendations
Tree work and landscaping priorities and estimates
Contractor selection and project management
International Society of Arboriculture- certified arborist
International Society of Tropical Foresters – urban forestry specialist
Community Stats
- Group Advanced Members
- Active Posts 593
- Profile Views 4,070
- Member Title Senior Member
- Age Age Unknown
- Birthday Birthday Unknown
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Gender
Male
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Interests
Trees, nature, mountain biking, hiking, swimming, family and pets, farming, organic gardening, natural health and healing.
Previous Fields
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Location
San Sai-Chiang Mai
Posts I've Made
In Topic: What'S Wrong With This Plant?
2012-05-13 21:07:00
The photo is so small that I can't see enought detail. But it appears to be growing in an extremely small planting space. Without adequate soil volume, a plant can develop stress from lack of water and nutrients and become susceptible to biotic (pest and disease) and abiotic (dessication, sunburn, nutrient deficientcies) disorders. Plants existing in confined planting spaces, need extra attention to irrigation and fertilization and maybe pest control.
In Topic: Is It Possible To Grow Vegetables Without Pesticide In Thailand ?
2012-05-11 08:52:32
It is very possible to grow vegetables without the use of highly toxic and environmentallly persistant pesticides, but it takes some knowledge, patience and a learning process. You just have to adapt and learn about least toxic methods, like biological controls, insecticidal soap, botanical sprays like neem oil extracts, baits and traps, mechanical methods (hand picking or wiping off of pests), growing varieties that are resistant to local pest and disease problems, etc. Build the soil fertility and mineralization, don't overfertilize and the plants will develop a level of natural resistance to pests and disease. Mulch to retain soil moisture and avoid plant physiological stress. Interplant your garden intelligently with specific companion plants that naturally repel certain insect pests. These are some examples
A lot depends on the scale of your growing operation. A small home garden for personal use is easy, and a few holes in your leafy vegetables from caterpillars may be acceptible; if you lose a plant or two during your learning process it's no big deal; a commercial growing operation where mono-cropping is practiced, where holes and blemishs caused by pests or disease will kill your sales is a different story. In a commercial operation you really need to know what you are doing, but it is not only possible to use "organic" methods, it is mainstream with some crops and in some locales.
Yesterday I had a customer call me to spray an apple tree in her home garden that she said on the phone had powdery mildew. When I inspected it, it was not mildew, but wooly apple aphid. It was a small tree so I showed her how to use a cotton gloved hand or two, or a rag, for mechanically wiping off the sticky globs of the aphid and it's waxy protective covering. One small tree, a retired lady, she was thrilled to have something productive to do. And I helped save the world by not spraying unnecessarily. If she had more trees or bigger, I would have suggested releasing a specific mini-wasp that I know will biologically control wooly apple aphid by ovipositing its eggs in the body of the aphid, and the larva when hatched will parasitize it.
It's facinating to me to study and practice these alternative methods and I encourage you to get into it. Read some of the pinned discussions at the beinning of the sub-forum and you will gain some knowledge and resources.
A lot depends on the scale of your growing operation. A small home garden for personal use is easy, and a few holes in your leafy vegetables from caterpillars may be acceptible; if you lose a plant or two during your learning process it's no big deal; a commercial growing operation where mono-cropping is practiced, where holes and blemishs caused by pests or disease will kill your sales is a different story. In a commercial operation you really need to know what you are doing, but it is not only possible to use "organic" methods, it is mainstream with some crops and in some locales.
Yesterday I had a customer call me to spray an apple tree in her home garden that she said on the phone had powdery mildew. When I inspected it, it was not mildew, but wooly apple aphid. It was a small tree so I showed her how to use a cotton gloved hand or two, or a rag, for mechanically wiping off the sticky globs of the aphid and it's waxy protective covering. One small tree, a retired lady, she was thrilled to have something productive to do. And I helped save the world by not spraying unnecessarily. If she had more trees or bigger, I would have suggested releasing a specific mini-wasp that I know will biologically control wooly apple aphid by ovipositing its eggs in the body of the aphid, and the larva when hatched will parasitize it.
It's facinating to me to study and practice these alternative methods and I encourage you to get into it. Read some of the pinned discussions at the beinning of the sub-forum and you will gain some knowledge and resources.
In Topic: Soil Analysis
2012-05-10 22:54:12
Here's the old page. I have request in for latest info. don
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