13 APRIL 1956, Page 35


Lieut.-Colonel E. Parbury, of Fairfield, Tenby, offers a correction of my information on the blueing of hydrangeas. The treatment,

he says, should be done at leaf If is too late to begin when buds show. I am not alone in thinking that the most profitable time to water in an alum solution is the spring but must confess that I am not an expert on the subject and Lieut.-Colonel Parbury refers me to Rothampstead for confirmation.