Category: Orchid Doctor

LIME: Dolomite, Its Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A mined, fossil-like form contains both calcium carbonate and magnesium; it adjusts the pH of bark; usually added with oyster shell because the two are better than one alone; beneficial in areas wh... Read More

LIME: In Bark Media

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lack of it in bark leads to greater acidity in the mix; it is a common almost universal practice (1) to add lime to bark potting mixes; can be added as dolomite to the surface of the pot mix, or gr... Read More

LIME: Oyster Shell, Its Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is calcium carbonate lime; ground up shells comes in coarse type for chicken scratch or flour type used by many orchid growers. C74-51 Read More

LIME: Pointers About it

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Composted fertilizers never contain it; it is always added to peat mixes in order to supply missing calcium; Rockwool and Oasis have no buffering ability for lime; the deficit of Calcium is reveale... Read More

LIMESTONE: Added to Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a mix of fir bark and redwood bark add 1/2 pound of pulverized high magnesium limestone to each cubic foot. A64-591; A75-437; this procedure not considered necessary, as the pH of the fir bark ... Read More

LIMESTONE: For Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In nature warm rain does not dissolve the limestone substrate where Brachypetalum types grow; in greenhouses cold water dissolves an excess of the liberal supply sometimes erroneously added to the ... Read More

LIPIDS: Growth Promoters

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The increase in yield in agricultural crops exceeds those with TRIA (Triacontanol) and they deserve testing for spraying seedlings ex-flask; commercial preparations are patented by A.J.Welebir; the... Read More

LIPS: Abnormal Coloration

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rose or reddish pigmentation occurs in cymbidiums and epidendrums in response to pollination or pollen removal; mice remove pollen; removal frequently hastens the ageing of the flowers. A67-569+; A... Read More

LIPS: Discoloration

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Brownish discoloration near the base is caused by low temperature. A67-574 Read More

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... Read More