LUTHER BURBANK 



During a period covering 40 years I have prob- 

 ably raised no less than 75,000 to 100,000 seedling 

 grapes from the best table varieties. I have hy- 

 bridized many varieties, both European, Amer- 

 ican, cultivated and wild; also other wUd species 

 from Mexico, Australia, China, and Japan. 



I have likewise attained interesting results by 

 working with bud sports, and with the tuberous 

 grape of Mexico. 



Materials and Method 



To raise grape seedlings, it is only necessary 

 to gather the seed from the variety desired, and 

 keep them barely moist until planting time. Plant 

 as soon as the frost is out of the ground in well- 

 drained land, in rows about 3 or 4 feet apart. 

 Scatter the seed thinly in narrow drills. Cover 

 with sandy or leaf -mould soil, about one inch deep 

 in a humid climate, a little deeper in dry soil like 

 that of California. 



In the latter case it is well to have the upper 

 half of the covering of sawdust, so that the seed- 

 lings do not have too great a weight to lift in push- 

 ing through the soil. 



During the summer the very poor seedlings, 

 those which are attacked by mildew and which 

 have made weak, uncertain growth may be up- 

 rooted at once, giving the others a better chance. 

 Later, while the plants are dormant, transplant 



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