Newly Posted Articles

CORK BARK: What Orchids Grow on It?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many epidendrums, oncidiums, small dendrobiums, and cattleyas will grow on cork slabs; ground cork pieces, if medium bark sized, can be used instead of bark but they hold less moisture than fir bar... Read More

CORK CHIPS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They dry much slower in the pot than cork slabs in air and seem to decompose in less than a year in hot areas, so repotting at regular intervals is a must. F82-55 Read More

DAMP-OFF: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Spray Captan at 1 ttpg., or PCNB (Terraclor) at 1 ttpg. as pot drench; also Chinasol, oxyquinoline benzoate (Wilson Anti-Damp), or sodium-o-phenylphanate (Dowicide Ai, Natriphene, Sopp, or Topane) ... Read More

CORK NUGGETS: Culture Tips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In South Florida they decompose rapidly so repotting must be done more frequently; tree-fern, charcoal, fir bark and even sphagnum moss are better alternatives. F84-179 Read More

CORK NUGGETS: Mixes with Charcoal

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Up to 5 in. pots use medium nuggests with #3 charcoal, to 7 in. pots with #2 charcoal, to lO in. pots, coarse grind with #1 or #2 charcoal. A85-369; distributer listing A85-101 Read More

TETRAPLOIDS: In Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "4n's" have advantages and disadvantages for the orchid world; the colchicine-converted ones have caused a lot of confusion in the orchid world; refer to OR81-169They are the heaviest producers of ... Read More

OSMUNDA: Treatment in the Pot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Drench with 4% formalin to kill Fusarium spores. A86-74 Read More

ROOT TIPS: Browning and Streaking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It may not be caused by too-alkaline water; the causes are either excess of inorganic salt buildup, or excess acidity; accidental chilling of the root tips is an overlooked possibility; try using w... Read More

TREE-FERN FIBER: Mexifern

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Compared with the loose, coarse tree-fern; Mexifern is thinner, twiggier, of a lighter brown, with tiny branchlets which keep fibers separated, preventing compacting and sogginess which can happen ... Read More

CYMBIDIUMS: Culture to Induce Spiking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "full-sun" treatment can be successful; give as much sun as possible in the summer including risk of sunburn and with more water and fertilizer, OD68-244The day-night temperature change must be 20 ... Read More