260 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 (J. 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}. Rhamnacecz. 

 Seeds and cuttings. 



Juncus (Rush, Bulrush). Juncacece. 



Seeds. The perennials may be increased by division. 

 Scirpus Taberncemontanus variegatus of florists is a form 

 of Juncus effusus, and is increased by division of the 

 stools. 



Juneberry ( A melanchier oblongifolia ) . 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). Conifertz. 



Increased readily by seeds, 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 coldframe, 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. Magnoliacea. 



Seeds. Cuttings, made of nearly ripened shoots, which 

 should be placed in sand under glass. 



Kaki. See Persimmon. 



