The Orchid Doctor Articles under the Heading Pumice

Pumice Comments
PUMICE: Agricultural Grade Suitable fertilizer for plants grown in it is 10-10-10; pumice is not like bark which requires extra nitrogen to produce good growth. A61-904 0
PUMICE: As a Cymbidium Medium It is not considered as good as bark; in an experimental growth trial lasting three years the plants in pumice became smaller, the root system poorer than those in bark, with the root system showing stunting and tip stoppage; alkalinity may have become the main problem. OA84-79. 0
PUMICE: As Potting Media For its characteristics, a clinical analysis, comparative data with fir bark and osmunda, its many advantages, refer to A61-17+; C72-70+ 0
PUMICE: Definition A light, spongy stone thrown up by volcanoes. A75-712; RMH 0

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  1. Mark Kaczynski asked question Looking for Dendrobium Jac-Hawaii 'Uniwai Pearl' in category General Discussion
  2. Angela Baxter started topic Catt. walkeriana in category Cattleya Alliance
  3. Luis Imatani asked question RLC/ LC Large flowered hybrids in category General Discussion
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  1. Bill Overton commented on topic "Catt. walkeriana" by Angela Baxter
  2. Gonzalo Rotondaro commented on member plant Cattleya (Sophronitis) cerna by Laura Urban
  3. Steven Kirincich commented on member plant Lc. Little Oliver by Steven Kirincich
  4. Robert Rand commented on member plant Alcra. Winter Wonderland 'White Fairy' by Robert Rand
  5. Thuong Do commented on member plant Schom. tibicinis by Edward Zapata
  6. Bill Overton commented on topic "diseases" by Penny Edwards
  7. William Gorski commented on topic "Orchid Species: Vanda falcata h.v. Ryunotsume" by William Gorski
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  9. Susan Fairbairn commented on topic "diseases" by Penny Edwards
  10. Robert H. Findlay commented on topic "seed vs. pollen parent " by Robert H. Findlay