LAVA ROCK: In Cymbidium Mixes

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 4 years ago.

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It is too porous alone and in a high humidity situation it would retain too much water. OA82-6
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Lava Rock Comments
LAVA: As Potting Medium Occurs in many varieties differing in structure and constitution; has many ideal growing characteristics; pumice is one variety; its advantages; refer to C72-70+ 0
LAVA ROCK: Also Called Scoria Red lava rock can be obtained in the western States from commercial-industrial roofers and from plant nurseries. A83-951 0
LAVA ROCK: A Review of Culture After Two Years Trial Red lava rock in clay pots was still ideal for a general collection of cattleyas; phalaenopsis, in plastic pots; vandas in one-inch size rock also in plastic, the same for dendrobiums, equitant oncids in small clay pots, plus many other genera; 20-20-20 fertilizer on seedlings was served year round and on the general collection from April to June; a feed of 5-15-5 was given June to August and January to March; a bloom booster was given in October to December or even into February in cooler areas. A83-950 0
LAVA ROCK: As a Substitute for Bark Red lava has distinctive characteristics, for comments, comparisons, criticism which point up mostly its advantages, such as re-usability for many applications and because it does not assimilate nitrogen it is appropriate for many genera, cattleyas and dendrobiums especially. A80-1384 0
LAVA ROCK: As Potting Medium Growth in this is satisfactory providing it is not allowed to get too dry and if it is periodically flushed to get rid of the salt build-up. A80-1141It lasts almost forever, resists rot, is cost-effective, drains well, has no problems associated with it, can wait for repotting until third or fourth year; is popular in Hawaii. A86-495 0
LAVA ROCK: Potting Medium Used in Hawaii, also in California; success reported for various genera, especially with cymbidiums and using coarse lava rock and coarse bark mixed; lasts five years; do not use conventional leaching but water heavily; both black and red volcanic rock used; can be mixed with gravel, crushed rock, pebbles or chopped polystyrene packing materials. OA78-198 0

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  4. Armando Mantellini started topic Cattleya jenmanii missing awards in category Cattleya Alliance
  5. Darrin Duling asked question Phragmipedium Cape Sunset or Eric Young? in category Paph Alliance

New Comments

  1. Carol Holdren commented on topic "Dendrobium No I’d. HELP!" by Rae Walker
  2. Carol Holdren commented on article "CATTLEYAS: Control of Blooming Time" by Robert M. [Bert] Hamilton (Compiler)
  3. Carol Holdren commented on member plant Lc. Nice Holiday 'Suntopia' by William Gorski
  4. Robert H. Findlay commented on topic "Phragmipedium Cape Sunset or Eric Young?" by Darrin Duling
  5. Robert H. Findlay commented on member plant Phrag. Ecuagenera Dream by Robert H. Findlay
  6. Tatjana Opekunova commented on article "CATTLEYAS: Reasons for Non-flowering" by Robert M. [Bert] Hamilton (Compiler)
  7. Carol Holdren commented on member plant Zygopetalum var. Big Red One by Wyatt Parker
  8. Carol Holdren commented on topic "Need ID, Please" by Oliver Quin Surco
  9. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D
  10. Debbie Chase commented on topic "Identify This Orchid " by Debbie Chase
  11. Andrew Chan commented on member plant V. Yano Blue var. Ploenpit by Mary Lane
  12. William Gorski commented on member plant Alcra. Tropic Lily 'Hilo Space Ship' by Mary Lane
  13. Osura Mindula Gunasena commented on topic "Help to Identify the Id of this Vanda" by Osura Mindula Gunasena
  14. Renee Hawes commented on member plant Phal. I-Hsin Spot Eagle var. I-Hsin Spot Eagle 'Montclair' AM/AOS 'Ta-Lin Spot x Black Eagle' by Renee Hawes
  15. Renee Hawes commented on member plant Phal. Liu's Berry by Renee Hawes
  16. Renee Hawes commented on member plant Phal. Yushan Christopher var. Harlequin 'Little Panda' by Renee Hawes
  17. Carol Holdren commented on topic "How to repot a Mattie Shave" by Pam Alexander
  18. Frank Cambas commented on member plant Zns. Cynosure var. Blue birds by Ben MG
  19. Robert H. Findlay commented on topic "Lady Bug or dangerous bug" by John Small
  20. Robert H. Findlay commented on topic "Help with ID of this Eria sp." by Robert H. Findlay