Category: Orchid Doctor

CYMBIDIUMS: Temperature to Set Buds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The low temperature does not matter, it's the swing of about lO dC from day to night, just as the bulb is about to mature that matters. AU84-278 Read More

CYMBIDIUMS: Temperature to Set Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Nights in December and early January should be 50 dF or lower temperature, increased to 55 dF a bit later in the season; when the flowers are developing the rise should be to 60 dF; the daytime ran... Read More

CYMBIDIUMS: Temperatures and Growing Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The minimum night temperature is from 40 deg.F. to 45 deg.F, with the maximum during the day in the low 80's, for Southern California. OD76-82 Read More

CYMBIDIUMS: Temperatures At Night

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago At a night temperature of 59 deg.F., 10% of plants bloomed; at 54 deg.F., 50% bloomed, and at 46 deg. to 50 deg.F, 100% of test groups bloomed, and with extra spikes. A62-877 Read More

CYMBIDIUMS: Temperatures Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Summers as cool as possible; in fall nights of 50 deg.F.; fall days can run to 70 deg.F, but as winter comes on lower the days to 60 deg.F.; the early flowering types will develop with the shorteni... Read More

CYMBIDIUMS: Temperatures Required to Set Buds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For flowers to appear in November to January start cooling the previous March to May to 55-60 deg.F.; for flowers to appear January to March, cool to 55 deg.F. if possible in June to August; some v... Read More

CYMBIDIUMS: Tetraploids, Spontaneous

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Alexanderi 'Westonbirt'; Pauwelsii 'Comte de Hempjtinne'; Rosanna 'Pinkie'; Shirley 'McBean's' ; Babylon 'Castle Hill'; Babylon 'Carpentier'; Vieux Rose 'Dell Park'; Pearl Easter 'McBean's'; Dorama... Read More

CYMBIDIUMS: Tissue Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Knudson C medium enriched with banana homogenate at lOO gr. produces larger protocorms and millions of them; mericloning has spread virus to epidemic proportions; five ways to prevent its spread; r... Read More

CYMBIDIUMS: Trace Elements Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Main ones are iron, magnesium, molybdenum, and boron. A88-11 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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