Category: Oncidium Alliance

MILTONIAS: Leaves Show Sudden Brown Patches

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sample inspected showed no pathogens; the tip burn may have been caused by too strong fertilizer or lack of leaching. A65-910 Read More

ONCIDIUMS: Breeding Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 18 oncidiums, species and hybrids, rated for a projected attempt at improvement of Oncidium Goldiana (Golden Shower) by eliminating virus; 13 criteria applied, pointing to perfection; refer to OD80... Read More

ONCIDIUMS: Flowering Excessively

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If you can believe it, some have a tendency to flower themselves to death (not in my greenhouse) without showing signs of failure, so cut off the spikes after several weeks. SA85Mar-53 Read More

ONCIDIUMS: Good Pollen Parents

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Those showing male preference in hybridizing as against being the pod parent; 18 plants listed; refer to OD77-101 Read More

ONCIDIUMS: Sexual Compatibility Groupings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 58 species arranged by name in four groups on the basis of sexual compatibility for breeding; six other genera grouped on the basis of their compatibility with oncidiums; much other breeding data; ... Read More

ONCIDIUMS: Terete-leaved

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lost their new grewth through rotting and blackening which may have been caused by daily (excessive) watering or because of Phytophthora or Pythium fungus,neither of which are affected by the spray... Read More

MILTONIA SCORCH: Bacterial Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Appears only on miltonias; not yet identified; cool temperatutes cause it; extremely infectious; water-soaked spots appear on edge of leaf, often on the new ones and spreads to pseudobulbs which tu... Read More

MILTONIDIUM: Leaves Grow Rough and Wrinkled and No Blooms Appear

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many miltonidias and hybrids develop wrinkled leaves; possibly a cultural fault; lack of blooms is cultural or environmental. A70-1099 Read More

ODONTOGLOSSUM GRANDE: A Problem Plant; How to Flower It?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Grow it warm until Labor Day; then move it to the cymbidium house or a cool spot but withhold water until Christmas; then move it back to the warmth. ODA72-128 Read More

ONCIDIUM VARICOSUM: Problem Plant; Cultural Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Any good potting medium, in a shallow pot, with good to strong light suits them; water well when they are growing but less in winter; give no rest; they like cattleya conditions but with more light... Read More