Category: Orchid Doctor

VACUUM CLEANER: To Clean Up Spent Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The pincushion flowers of Maxillaria vitelliniflora which fall down among the foliage can be removed thereby. ODA78(l)-28 Read More

VANDA MISS JOAQUIM: A Problem Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The base of the leaves is discolored; caused probably by red spider; they hide in the sheaths; spray with Kelthane or Dimite, then again three days later. F70-182 Read More

VANDA RINGSPOT: Possibly a Virus Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Slightly raised yellow concentric rings mostly on the upper leaf surface; green bands appear between the rings then fade and become yellow; with age the area dies and turns purple-black; no control... Read More

VANDACEOUS PLANTS: Fertilizing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use 20-20-20 weekly in the greenhouse but triple that amount if growing outside; in winter fertilize fortnightly and at every third watering apply 10-30-20, also called Blossom booster. RMH Read More

VANDAS: Air-layering

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cut around the stem into live tissue; dust with Rootone, and place wet sphagnum over it, cover with polyethylene and secure with elastic bands; wait till roots are 1.5 inches, cut off and pot. F70-117 Read More

VANDAS: Crown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago During rainy weather in Florida additional protection is advised; deposit a small teaspoonful of Captan in the uppermost leaf axils and the crown; with each watering or rain a deposit of Captan wil... Read More

VANDAS: In Baskets

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Because "potting on" with them can be a problem, start with three inch baskets for seedlings and when necessary move it whole into a four inch or five inch size, and continue this system (move both... Read More

VANDAS: Inducing Rooting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To make roots appear half -way up the stem so that dividing and repotting can follow, peel the tight brown outer covering "bark" off the stem; a root tip should appear soon after. AU76-129 Read More

VANDAS: Lack Roots Up-stem for Repotting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Air-layer the stems to induce rooting by wrapping some places on the stem with moist sphagnum wrapped with polyethylene secured top and bottom with string or elastic, until new roots are large enou... Read More

VANDAS: Leaves Curl, Turn Yellow and Fall

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago This shows up in the fall, with cool weather; it is caused by a poor root system, or nutrient deficiency; fertilize regularly during the summer. F76-33 Read More