layers. Cuttings may be taken early in the spring-, 

 of the preceding year's growth ; or in June of the 

 young shoots, and struck under a hand-glass. It 

 sometimes ripens its seed in the open air in England ; 

 and these may be sown in pots, placed in a hotbed, 

 in March ; and the plants gradually exposed to the 

 open air after Midsummer. 



Miller says, * I have found the plants which have 

 been propagated two or three times, either by layers 

 or cuttings, seldom produce fruit ; which is common 

 to many other plants.' This observation of Miller's 

 should not be lost sight of. It may, in many in- 

 stances of fruit culture, prove very important, as 

 the mode of propagation has undoubted influence on 

 the habits of many vegetables. 



Parkinson, in his notice of the maracoc, which 

 was a species of the passion flower, cultivated when 

 he wrote in 1629, says, that it showed a remarkable 

 particularity in rising from the ground a month 

 sooner, if a seedling plant, than if it grew from roots 

 brought from Virginia. 



It appears highly desirable to propagate from 

 seeds, which has been done by several eminent bo- 

 tanists, and beautiful new varieties have been pro- 

 duced. Some of these are minutely described in the 

 Transactions of the Horticultural Society. 



The Passiflora caerulea requires to be trained 

 against a wall, with a southern aspect ; and in winter 

 the roots should be covered with straw, as this will 

 protect them from injury, even if the head of the 

 plant be destroyed. In March the shoots may be 

 very much shortened, which will encourage a vigo- 

 rous growth. 



Hort. Kew. 2, v. 4, 154. 



