Birch tree

a.m.: Big Leaf.


Form:

deciduous trees, up to 25m


; The bark is dark gray, not cracked, and the old thin scales peel backward and still smooth. Small branches. It's hairy. Leafy long oval table, long 2-8cm , front tip, base wide wedge, jagged neat, near peach, side vein 10-14pair, rough back rough, back dense gray soft hair. Nuts are small,

2


.

5-4mm


, skewed and wrinkled. Flowering

3-4


, and

10-11


in October.


Distribution:

, south of the Huaihe River and Qinling, the middle and lower reaches of the Yangtze River to southern China, southwest China, provinces and regions. The vertical distribution is mostly in

500mbelow the mountain and plain, in Yunnan up to 1000 m


.


Habits:

, warm climate and fertile wet soil, can be grown on acidic, neutral and lime soil. Do not accumulate water, also can not bear dry barren. It is resistant to soot and poisonous gases. Deep root, side root wide spread, strong resistance to wind. The growth rate is moderately slow, especially in inferfernia,

10


gradually after birth. Long life.


Ornamental characteristics and garden use:

branches of the eucalyptus branches fine leafy beauty, dense shade, majestic tree shape, ornamental value is much higher than the average eucalyptus tree. In the garden green space alone planting, clumping, planting is suitable. In Jiangnan garden to become a practice, three or five plants dotted with pavilion pool side interesting. It is also the ideal tree species for road trees, roadside greening, greening of factories and mining areas and creating wind-proof forests. It's also a good material for making bonsai.