340 THE NURSERY-MANUAL 



Isoloma. Kohleria. Gesneriaccoe. 



Propagation as in achimenes ; the usual kinds grow readily 

 from seeds, blooming the same year they are sown. See Ges- 

 neriaceoe, page 318. 



Itea. Saxifragacece. 



Multiplied by seeds and by suckers ; also by cuttings and division 

 of the roots, and sometimes by layers. 



Ixia. Iridaceoe. 



Seeds may be sown in autumn, and the pans or boxes kept in a 

 cool frame. Seeds should give blooming plants the second year. 



Propagation by bulbels or offsets is much quicker, and is the 

 usual method. For greenhouse bloom bulbs should be planted 

 from September 15 to October 30, five or six in a 5-inch pot or 

 eight to ten in a 6-inch pot, an inch deep in a mixture of sandy soil 

 and leaf-mold. The pots should be stored under a bench or in a 

 rather dark cellar, at a temperature of 45. For outdoor culture, 

 bulbs should be planted as late as November 30, 3 inches deep in a 

 frame and covered with leaves, hay or pine-needles. 



Ixiolirion. Amaryllidaceas. 



Propagated by seeds, and by offsets from the bulbous rootstocks. 

 See Amaryllidacece, page 228. 



Ixora. Rubiaceae. 



Readily increased in spring by cuttings of three or four joints in 

 sharp sand under heat and protected from sun. They may also 

 be propagated by seeds, when obtainable. 



Jacaranda. Bignoniaceoe. 

 Seeds when obtainable ; cuttings of half-ripened wood. 



Jacobinia. Acanthaceas. 



Propagated easily by cuttings, much as for fuchsia. New 

 plants should be grown every year for best results in conservatory. 



Jacquemontia. Convolvulacece. 

 Propagated by seeds and cuttings, much as for ipomcea. 



Jamesia. Saxifragacece. 

 Propagated by seeds, and by cuttings of ripened wood. 



