SYLVICULTURE. 



Use transplants three years old; plant close, to avoid side 

 branches. 



E. Acer saccharum: Fresh, sandy loam, or fresh sand; forming 

 stool -shoots on dry soil, and no stem. 



Growth quick; light demanding; strong root system. 



Forms forks frequently 15 feet above ground. 



Height 35 feet, when 20 years old. 



Most frost hard of any Maple species. Game and rabbits despise 

 it. 



Seeds mature in June, and can be planted at once, but are just as 

 well preserved and planted in spring. 



Use seedlings two years old, or transplants, four years old. 



F. Acer negundo: Requires strong soil; does not do on dry soil. 

 Growth very quick to start with up to 6 feet in 2 years, in 20 

 years 50 feet. 



Development of low, branchy crown. 

 Light demanding, frost proof. 

 Use seedlings one year old. 

 Damaged by game and rabbits. 



G. Acer saccharinum : Requires strong soil; not clay. 

 Growth slower than in other Maples, up to fifth year, 20 years 



old 35 feet high. 



Apt to form forks. 



Sensitive against frost and drought; requires shade; does best 

 when used for underplanting. 



Use transplanted small saplings. 



Never plant on open ground ! ! ! 



Mayr recommends it only for sugar orchards not for timber 

 production. 



H. .Betula lenta: Avoids wet frost dells and poor dry soil; 

 forms tap-root on sand and flat-root on clay. 



Height in 5 years 5 feet; in 20 years 36 feet. 



Growth bushy to start with, but soon straight, erect and free 

 from branches. 



Decidedly light demanding, but fond of side shade. 



No more frost-proof than Beech. Late arid early frost damages 

 it, especially on wet clay. 



Game, rabbits and mice are very dangerous. 



Seed-bed should not be dug over. Peel off the top cover of grass 

 and weeds on humose sand; hoe the soil and then use roller. Plant 

 broadcast, one pound for two square poles; cover by sifting one- 



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