Newly Posted Articles

LEAF BLIGHT: Also Known as Leaf Die-back, Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by fungus invasion; spreads gradually through leaf; cut it out before treating; infected areas show watery before drying; control with Benlate, or Anti-Damp, or Tersan. RMH Read More

FLASKING: Reflasking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Airtight capping is not advised as the seedlings can be inhibited by it. A77-314 Read More

CROWDING PLANTS: Do Not Do it

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Air circulation is very important in the growth process. OD72-227 Read More

MONSOONS: In Southeast Asia

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They begin in June and last through September and early October; rains fall incessantly; temperatures are in the 90's F. in the plains, and in the mountains they average 70 deg.F; temperatures in O... Read More

KNUDSON FORMULA: Medium for Flasking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For the several Knudson formulae, and many others of a similar nature, refer to OBII-243 Read More

BARK MIX: Two-thirds Fir Bark and One-third Redwood, Are Any Additions Needed?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Add 15% by volume screened peat moss larger than one-quarter inch; if water supply is soft, or rain is used add one-half pound pulverized high magnesium limestone to 1 cu. ft. of mix. A75-437 Read More

MOUNTS: Materials for Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Slabs of cork bark, sassafras wood, aged hardwood, western cedar; coconut husks, palm-frond stems, styrofoam sheets, (believe it); they should also have pads of osmunda, husky fiber, sheet moss, sp... Read More

GROWTHS, NEW: On Cattleyas, Weaken and Fall Over When Half Mature

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The cause of soft, spindly growth is probably due to excessively high temperatures, or to poor roots. A71-21 Read More

MOUNTS: Slab of Cork or Rough Lumber

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Where the humidity is usually high, mounts of cork bark or ordinary lumber of various woods can be used. OA82-6 Read More

BRACTS ON SPIKES: But Flower Buds Don't Show There

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Both oncidiums and phalaenopsis require a cool treatment of several weeks to promote flowering. A80-960 Read More