! THE NURSE R Y-BO OK. 



The "English" walnut (/. regia] is mostly grown direct 

 from seed in this country, and the different varieties usually 

 come true. In California, the native walnut (/. Californica] 

 is often used as a stock for this species, and flute-budding on 

 branches a half-inch or more in diameter is often practiced 

 " Twig-budding," or the insertion of a short branchlet or bit 

 of branch which is severed from the parent branch in the 

 same manner as a shield bud, is sometimes employed. 



Jujube (Zixypfaus Jujube}. Rhamnece. 



Seeds and cuttings. 

 Juncus (Rush, Bulrush). Juncece. 



Seeds. The perennials may be increased by division. 



Juneberry (Amehmchier Canadensis, var. oblongi folia). Rosacece 

 Increased by using the sprouts which form freely about 

 the old plants ; also by seeds. 



Juniperus (Juniper, Red Cedar). Coniferce. 



Increased readily by seeds, which, hov/ever, often lie 

 dormant until the second year. They germinate more 

 readily if the pulp is removed by maceration or by soaking 

 with ashes for a few days. Green cuttings, in sand under 

 glass, root easily ; or mature cuttings may be taken in fall 

 and placed in a cold frame, in which they will need little pro- 

 tection during winter. Some varieties require a long time to 

 root. Most of the named varieties may be grafted on im- 

 ported Irish stocks, which are much used in some parts of the 

 country. They may be veneer-grafted and handled in a 

 cool house. 



Jurinea. Composilce. 



Increased in spring by seeds or by divisions. 

 Jussiaea. Onagrariece. 



Seeds and divisions are used for propagating. 



Justicia, including Jacobinia and Sericographis. Acanlhacece. 



Seeds occasionally. The species strike readily from short 

 green cuttings on a cutting-bench or under a frame. 



Kadsura, Sarcocarpon. Magnoliacece. 



Seeds. Cuttings, made of nearly ripened shoots, which 

 should be placed in sand under glass 



Kaki. See Persimmon. 



