WIND- 



the last row of orchard trees, if possible. It is usually 

 best to use uative trees for the wind-break, since they 

 are hardy and well adapted to the particular climate. 

 Wind-breaks often harbor injurious insects and fungi, 

 and care must be taken that species of trees liable to 

 these difficulties bu uot used. In the northeastern 





)uld be bad practice to plant 

 ^ it is so much infested with 



some cases, very low wind- 

 e as high ones. This is true 

 s in the drv regions, since it 



check tbi- f..r.-.- ..f tlie wind 



WIND-BREAKS 1979 



coast of southern California and, probably, was intro- 

 duced into the San Francisco peninsula by the Mission 

 Fathers, as the pioneers of 18.il and 'S'J report that it was 



a tall tlii 



lids better than almost 

 is rapid in its growth, 

 time somewhat exten- 

 but is now rarely met 



naturally: it witlist;iiiils 

 any othe'r heavy tdliM-.,! 

 The Osage oran;;.- wiis 

 sively planted as a win. 



The Italians and Chinese, who have almost complete 

 control of the truck-gardening industry in and around 

 San Francisco, make extensive use of a Callfornian 

 tree-mallow, Lavafera assirrgentiflora, Fig. 2730 — as a 

 wind-break and protection from the drift-sand, which is 

 such a prominent feature of the outskirts of the city. 

 This plant is indigenous to some of the islands off the 



2737. The Giant Reed— Arundo Donax. 



A tall plant of striking habit suitable for wild gardens and 



then growing spontaneously and in great abundance on 

 the sand dunes where the city now stands. This Lava- 

 tera proves to be well adapted to the peculiar conditions 

 under which it is cultivated; it stands long seasons of 



*ifi|ffc't 



2728. A small wild garden at the rear of a building. 



