a6o THE NURSERY LIST. 



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

 from seed in this country, and the different varieties usu- 

 ally come true. In California, the native walnut (/. Cali- 

 fornica) is often used as a stock for this species, and flute- 

 budding on branches a half-inch or more in diameter is 

 often practised. Twig- or prong-budding (Fig. 96) is 

 sometimes employed. 



Jujube {Zizyphus Jujube). Rhamnacecs. 

 Seeds and cuttings. 



Juncus (Rush, Bulrush). JuncacecE. 



Seeds. The perennials may be increased by division. 

 Scirpus Tabem/zmontanus variegatus of florists is a form 

 of juncus effusus, and is increased by division of the 

 stools. 



Juneberry (Atnelanckier oblongi/olia) . Rosacece. 



Increased by using the sprouts which form freely about 

 the old plants ; also by seeds. The cultivated dwarf June- 

 berry is multiplied by suckers. See Amelanchier. 



Juniperus (Juniper, Red Cedar, Savin). Coniferce. 



Increased readily by se^ds, which, however, often lie 

 dormant until the second year. Red cedar seed is one of 

 the species which lie dormant a 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 coldfrarae, in which they 

 will need little protection during winter. Some varieties 

 require a long time to root. Most of the named varieties 

 may be grafted on imported Irish stocks, which are much 

 used in some parts of the country. They may be veneer- 

 grafted and handled in a cool house. 



Justicia, including Jacobinia and Sericographis. Acanthacea. 



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. 



