Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Small gravel in small pot< and large in large pots is good it can be disinfected first; an advantage in plastic pots is that it helps them stand upright. OIE85Nov-17
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DRAINAGE: Of Potting Mix
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Kinds of materials: broken crocks, charcoal (not recommended), bark (larger pieces), pebbles, stones, volcanic rocks, styrofoam "peanuts" (packing material), etc. A78-303
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DRAINAGE: Of Potting Mixes
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
A fiberglass screening layer cut to fit the inside bottom of a pot prevents most creatures from crawling in through the drainage holes. OIE86Sept.
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DRAINAGE: Phalaenopsis Culture
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
It is second in importance to adequate light; if a plant dies in the second or third year, lack of drainage and aeration of the roots is the cause; bark eventually breaks down and denies air to the...
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DRENCH: Definition
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
To immerse the pot and plant in a liquid. RMH
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DRIP: From Greenhouse Roof, Control
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Use "Sun Clear" for the inside of plastic roofing, it causes running without dripping. A76-403
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DRY FEEDING: Outline
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
It is most logically used on terrestrial-type plants; common agricultural fertilizers are too quick acting for orchids; blood meal or hoof and horn require microbe action to release 13% nitrogen; s...
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DRY ROT: How to Prevent
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Specimen showed infection by Pythium "black rot", which is a water mold found in tubs, troughs which are used to hold water in a greenhouse; use 1 level tablespoon of Dexon 35, a specific control, ...
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DRYADELLA: Reflasking
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Either refLask the year-old seedlings or plant them in a community pot using tree-fern with a topping of live sphagnum moss; keep humidity high until seedlings are established then reduce it gradua...
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ACID OR ALKALINE: Changing the Values
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit...
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