PROPAGATIOX BY BUDS LAYERAGE 79 



planted in fall for outdoor blooming and mulched with 

 leaves or litter during winter. For best results over a 

 series of years their tops must be allowed to mature 

 before being cut or dug. When dug they must be dried 

 in the shade, cleaned and stored in bags or trays in an 

 airy, dry, cool place till fall. Most spring-blooming 

 bulbs (hyacinth, tulips, narcissus) come from Holland. 



Summer-blooming bulbs (gladiolus, tuberose, zephyr- 

 anthes, etc.) are mostly tender. They are planted in 

 spring, usually after the soil has become warm. Be- 



FIG. 69 SCOOPED HYACINTH BULBS 



Early and later stages respectively. The bulblets require two to five years to reach 

 salable sizes. 



cause of their tenderness they must be dug before the 

 ground freezes hard, and after drying in an airy shed or 

 other shelter, stored in a dry, warm place such as a cellar 

 with a furnace in it or on boards under greenhouse 

 benches. Before resetting in spring they must be cleaned. 



118. Temperatures for "bulb storing. Lily-of-the-valley pips are 

 cold stored at 25 to 30 degrees and bulbs at 17 for the first two 

 weeks, after which the temperature is raised and kept at 24 till the 

 bulbs are needed for forcing in greenhouses. 



119. Bulb growing in America. Tuberoses have long 

 been grown extensively in North Carolina; gladioli in 

 New York, Ohio, Kentucky and other states ; and other 

 summer-blooming bulbs in various parts of America ; 



