76 orchids: how to grow them successfully. 



all the Dendrobiums will not stand this treatment. No more 

 shading should be used than is absolutely necessarj^ so that the 

 growth may get well matured as it is formed ; and produce short, 

 stout, well hardened bulbs, which should be the aim of every 

 grower — thin sappy growths being of little use. 



September, 



Cool House. ^ — Temperature, day irith sun, 68"; day without sun, 

 about Q'S' : night, oS' : morning, o'3°. 

 All Odontoglossums of the Alexandrse type should have been 

 repotted, when necessary, by the early part of this month ; and 

 all Cool Orchids are materially strengthened by the dewy night air 

 being admitted through the ventilators, which should not be fully 

 closed during this month. 



Intermediate House. — Temperature, day ivith sun, 10" to 15° ; day 

 without sun, 68' : night, 63" : morning, 60'\ 

 Many more plants will now be fast approaching maturity, and 

 any Cattleyas which have not completed their growth should now 

 be placed in the warmest part of the house, and those which have 

 finished their growth at the coolest, where a goodly amount of air 

 can be given. The cool night aii* of September, properly admitted, 

 braces and strengthens all species of Orchids growing in Inter- 

 mediate houses, their slender pseudo bulbs increasing in stin-diness 

 and plenty of new ones are formed, and the fohage assumes a 

 bronzed appearance or are of an intense green colour. It is as 

 well to defer the use of fire heat until the last moment, 60 to 

 65 degrees being a good night temperature. Below 60 degrees a 

 little fire heat is necessary. 



Warm House. — Temperature — this should noiv he reduced in 



accordance with the shorter days and colder weather, but give 



fire heat at night — day with sun,lb" to 80" ; day ivithout sun, 



70' to To"; night, 70°; morning, 65" to 70'\ 



Calanthes will now be throwing up flower spikes, and a little 



liquid manure will be beneficial to them, but they should neither bo 



too wet at the root nor too dry. Eemove the permanent shading 



on the glass, and use the roller blind only when necessary ; but in 



giving more light in this way do it gradually, so that no plant 



suffers by exposure. Such Orchids as Phalsenopsis, Saccolabiums, 



Aerides, tfec, mil be best in a shady position, as these plants are 



