284 FLORA HISTORICA. 



If wanted for the borders, let them be put out 

 when all danger of their sustaining injury by 

 frost is over ; they will stand the winter in the 

 borders, and will also bear flowers, though not 

 so well as when protected by a house. Those 

 which are to flower in pots, are taken as soon as 

 their buds begin to swell in the spring ; all the 

 old mould being removed from their roots, they 

 are planted in fresh earth, in pots of about eight 

 inches in diameter at top, and placed in front of 

 the green-house or peach-house ; if the plants 

 are not over large, pots of smaller dimensions 

 should be used ; these will come into flower in 

 June. Care must be taken to supply them plen- 

 tifully with water whilst they are coming into 

 bloom, and it is best to place water pans under 

 the pots, to secure a continual supply of mois- 

 ture. If it is desirable to have plants in flower 

 early in the spring, they must be shifted into their 

 new pots in January, and brought forward with 

 forcing heat. The mould I generally give to my 

 Hydrangeas is a compost of loam and bog-earth, 

 or leaf-mould, with a little sand, well incorpo- 

 rated together; in this they will produce red 

 flowers ; if they are expected to blow blue, they 

 must be planted in pure yellow loam." 



This genus of plants was named Hydrangea 

 by Gronovius, a Dutch writer, who derived the 



