36 



PROPAGATION BY UNDERGROUND PARTS 



season is sufficient for the formation of numerous bulblets which 

 start at the cut places. These are separated and planted in spe- 

 cially prepared beds. They are here given good care and allowed 

 to grow to full flowering strength, which may require from three to 

 six years. 



The bulbs grown by this method are propagated in large quan- 

 tities in Holland, where the weather is moist, the soil favorable, 

 and the winters not severe. Similar favorable conditions are found 



Fig. 22. 



Fig 23. 



Fig. 22. — Gold seal (Hydrastis) is multiplied by tearing the roots apart and keeping crown 

 buds on each part. 



Fig. 23. — The old bulb of the bulbous buttercup will die and leave the young plants 

 separated. This method of propagation my be hastened by separating the young bulbs 

 from the old. 



on the Pacific coast of Washington; and in recent years the bulb- 

 growing industry has greatly increased in the region oi Bellingham 

 and elsewhere. 



Bulblets are small bulbs formed above ground. On plants of 

 the onion family they are near the top of the stems like a flower 

 cluster. On tiger lilies they are in the angles of the leaves along 

 the stems. If separated from the parent plant and placed in the 

 soil, they produce new plants. 



