CARE OF HOUSE PLANTS 37 



because the plants arc kept too warm and ,s:et very 

 little fresh air, after beingf broucrht into the house — 

 in otiier words, there is too abrupt and violent a changfe 

 in conditions, and the shock is so severe that they are 

 unable to overcome it, and in consequence they drop 

 their buds. 



