THE GREENHOUSE GAY 



81 



greenhouse a minimum temperature of 45 to 50 Fah. and a maxi- 

 mum of 50 to 55 should be kept. The pots should be stood on a 

 cool ash or pebble bottomed stage, and the stage and floors of the 

 house should be damped down twice a day, to keep the atmosphere 

 moist. Do not let the plants become dry, but at the same time be 

 careful not to over water them ; they will not require more than 

 half the water they did in summer. About once every ten days give 

 a little weak manure water if the pots are well filled with roots, but 



WELL, GROWN HYDRANGEA PLANTS, TWO YEARS OLD. 



not otherwise. Keep a sharp look out for insects, and if thrips 

 appear fumigate lightly two or three nights running. If in a dwell- 

 ing room, much the same treatment will be necessary : keep out of 

 draughts, and in the event of cold nights stand the plants away 

 from the windows. 



Hydrangeas not Flowering 



Q. I have about 500 Hydrangeas in 5-inch pots ; for some reason 

 they did not flower this spring. They have been outside since June, 

 the wood now (September) being well ripened. I want to get them 

 in flower by the middle of May next. Will you kindly say when to 

 cut down and subsequent treatment 1 H. P., Appleby. 



