Newly Posted Articles

PHALAENOPSIS: Leaf Splitting Down the Center

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An unusual problem caused perhaps by low humidity or uneven watering, both lame excuses. A85-872 Read More

PHALAENOPSIS: Leaves Fall Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All evergreen plants lose leaves and it's not a problem if there is a constant, or increasing number per plant. A84-286 Read More

PHALAENOPSIS: Leaves; Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Large splotchy green areas are caused by sprays of metaldehyde, at times. A80-110 Read More

PHALAENOPSIS: Life of Cut Flower-stems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can be prolonged to nine weeks, re-cut the stems under water at a 45 degree angle, change the water in the vase every four days and recut the stems each time; do not keep the flowers in the same... Read More

BARK: Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A typical mixture would have about 15 parts medium bark, 1-1/2 parts coarse Perlite, 174 part charcoal chips (quarter-inch size). OR87-173For cymbidiums in a high humidity area near the ocean in Ca... Read More

PHALAENOPSIS: Mesophyll Cell Collapse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In early spring the cells collapse after exposure to cold; they show yellow depressed streaks, turn tan color and become pitted with black. AH86-108 Read More

MOVING ORCHIDS: From Place to Place in a Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are disadvantages to disturbing plants by moving them around; five rules apply: (in short) move it in the evening so it can adjust to morning light; always return them to their same position ... Read More

NECROTIC SPOTS: On Phalaenopsis, Mature Plants; What Treatment?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is possibly Pseudomonas cattleyae, a bacterial disease; remove the leaves and spray monthly with Physan 20. A79-455 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

OUTDOORS GROWING: In Miami Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "grow or go" applies to orchids of minor importance in a large garden; plants are attached especially to oak trees on the east side at a point where water sprinklers hit a window-screener pouch wit... Read More