Category: Orchid Doctor

PAPHIOPEDILUMS: Leaf Loss

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Bottom leaves go yellow and fall off because of poor water quality, or too much light, or incorrect feeding, perhaps a lack of magnesium, or even not enough water. OA80-80 Read More

PAPHIOPEDILUMS: Leaf-tip Browning, or Die-back

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is caused by over-feeding; transpiration in the leaves provides a surplus of chemical feed in the cells which clog the circulatory system. A71-311 Read More

PAPHIOPEDILUMS: Leaf-tip Die-back

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is caused by too much fertilizer, or a calcium deficiency, or drying-out of the plant, especially during days of high temperatures. A83-1156 Read More

PAPHIOPEDILUMS: Light Control Response for December-february Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There is no response; they respond only to temperature control. A65-152 Read More

PAPHIOPEDILUMS: Light Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Light as for cattleyas produce better results, harder growth but shorter stems; for longer stems, shade them before flowering to about 800 -- 1,000fc. F74-68They need year round 7500 Lux; a clear s... Read More

PAPHIOPEDILUMS: Limestone Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants which grow on limestone cliff faces, or terrestrials and epiphytes in limestone areas: Paph. bellatullum, chamberlainianum, concolor, curtisii, delenatii, exul, fairieanum, glaucophyllum, go... Read More

PAPHIOPEDILUMS: Limestone Requirements for Malaysian Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use pulverized limestone, or ordinary agricultural limestone, at one level teaspoon to a four-inch pot; best to mix it with the medium before potting, but it can be added after potting. A66-494; A6... Read More

PAPHIOPEDILUMS: Minimum Optimums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For plain leaved: 50 deg.F. to 55 deg.F. at night; relative humidity 60%; 800fc. winter and 1,000 to l,500fc. summer; mottled leaved: 60 deg.F. at night; 60 to 70% relative humidity; 800fc. in wint... Read More

PAPHIOPEDILUMS: On Limes Tone

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Warm water in nature does not di ssolve the rock but cold water will and the plants will deteriorate in even the best conditions in cultivation. OD83-30 Read More

PAPHIOPEDILUMS: Palco Wool as Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They grow poorly in shredded redwood bark, possibly because it is too acid. OD68-9 Read More