Category: Orchid Doctor

B. DIGBYANA VAR. FIMBRITELA: Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Takes practically full sunlight, liberal watering and a night temperature of 60 deg. F. A63-390 Many are reluctant to flower; buy only those with evidence of flowering; hang high and dry; if it ... Read More

BACKBULBS, ROOTLESS: How Many to Leave on When Repotting Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago No definite number, maybe 3 or 4. A75-803 Read More

BACKBULBS, ROOTLESS: Treatment and Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plant in small pots (in medium: 6 fir bark medium grind; 2 coarse peat moss; 1 redwood bark fibre; 1 Perlite) set bottom third in medium, give water; place each pot in plastic bag closed at top; pl... Read More

BACKBULBS: Practical Means of Propagation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleya sections should have three or four pseudobulbs with healthy leaves, firm, viable, dormant buds and perhaps a few good roots; give them even casual good culture during summer and they will ... Read More

BACKBULBS: Propagation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For cataseturns and others, place the plant in a suitable mix (for catasetums or other genera) in a four-inch pot, moisten slightly and put in a clean, clear polyethylene bag to cover all parts, se... Read More

BACTERIAL BROWN ROT: Caused by Erwinia Cypripedii

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Small oval water-soaked spots in paphiopedilum leaves; change from light brown to deep chestnut enlarging steadily; can be suppressed by submerging in Natriphene at 1:2000 for 1 to 2.5 hours. BU49;... Read More

BACTERIAL BROWN SPOT: On Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Soft water-soaked lesion; turns black or brown; spray with Physan 20, 1/2 ttpg.; repeat as needed. A66-403; A73-888; AH19 Read More

BACTERIAL BROWN SPOT: Phytomonas Cattleyae

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Attacks cattleyas, and especially phalaenopsis and seedlings; small water-soaked spots; dirty green at first turn brown or black, enlarge rapidly; on phalaenopsis spot is blister-like and spreads r... Read More

BACTERIAL BULB ROT: Erwinia Carotovora

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Found on cymbidiums; spots become soft, oozy, foul-smelling; cut off and destroy; spray other bulbs with Agri-Strep or similar with care. S205 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More