Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Commentary on aspects of root behavior: green tip growth, corregations in root growth, green tip stoppage, adhesion to outside of pot, etc., refer to A85-122
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ROOTS: Indicators of Good Culture
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
For paphiopedilums look at the roots, not at the leaves to judge condition; knock the plants out of their pots and inspect the root tips and if they are lacking, something is wrong with the culture...
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ROOTS: Lack of Same
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
If they are lost the first thing to check is the humidity level, the fresh-air level, the medium itself; carbon must be available for cell sugar use in the plant which it normally obtains from the ...
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ROOTS: Loss, Sudden and Excessive
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Watering with water containing highly concentrated sulfur could cause a buildup; repot, even if out of season; use rain-water. A71-345
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ROOTS: Nutrient Absorbing Parts
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Only the tips of the aerial roots absorb nutrients; the velamen is relatively impervious; roots inside pots however attach themselves by means of root hairs capable of absorbing. A64-693
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ROOTS: Old Ones
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Experiments with root absorption of a trace element: showed that old roots continue to function and are of value to the plant. ORII-210.
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ROOTS: Outside Pots
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Why do they grow so vigourously?; it is because of too much watering, or the medium is too poorly aerated or dense. A69-55
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ROOTS: Outside the Pot
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Actually an indication of good culture of epiphytic types of orchids, also an indication that cutlure of that particular plant on a mount, on a block, or in a basket would be appropriate and succes...
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ROOTS: Paphiopedilums
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
If they appear brown and mushy it could be a fungus problem and the cure is to first repot the plant possibly in a 50/50 peat/perlite mix and culture normally but withhold fertilizer for several mo...
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ROOTS: Phalaenopsis
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
They grow a few inches then die; it occurs where the water supply is high in sodium salts especially. A72-807
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