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OHIO EXPERIMENT STATION: BULLETIN 190 



and specimens oue hundred feet tall are not uncommon in their native home. 

 Ths Lawson cypress is hardy in Ohio, excepting- that the tips of twigs on 

 young trees are occasionally winter-killed. This may be ascribed to their habit 

 of sometimes making a vigorous growth in late summer or early autumn and the 

 use of stimulating- manures, or even excessively fertile soil, about them should 

 be avoided. This species is one of the really excellent ornamental evergreens 

 and is too seldom seen. 



FIG. XV Golden Plume-like Japan Cypress T Retinospora plumosa aurea Hort. 

 Japan Cypress. Retinospora. The Japan cypresses are an impo rtant group 

 of elegant, small evergreens, in which are embodied a great diversity of color 

 and texture in foliage as well as variety in type and outline of tree. In their 

 numerous shades of green, blue and gold they afford some of the. finest material 

 for the formation of groups and beds of evergreens, and are unexcelled as 

 miniature specimen trees. As grown for a number of years on the grounds oi 

 the Experiment Station they have satisfactorily withstood the rigors of our win- 

 ters and are a source of perennial delight to all beholders. While their hardi- 

 ness is assured, the age to which they will retain their youthful beauty and 

 vigor is as yet undetermined, although it is claimed that in some localities -they 

 are shortlived. They revel in a fertile soil, without which it is not easy to 

 secure foliage of the best quality and color. In making a bed or group they may 

 be planted four to six feet apart and will not crowd for a number of years. The 

 botanical classification of the Japan cypresses is as yet considerably involved, 

 but in this connection it will suffice to group them under four or five principal 

 types, most of which have green and golden forms. 



