The Orchid Doctor Articles under the Heading Soot and Lime

Soot and Lime Comments
SOOT AND LIME: Used to Produce Ammoniacal Vapor In the 19th century in Europe, soot and lime were mixed dry to produce atmospheric ammoniacal vapor in the greenhouse; ammonia in solution could also be used being spread over the floor; for nitrogen supply. OR72-228 0

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  1. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George
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