70 



PLANT TROPAnATIOX 



as lilt; rosettes have two wcll-fnrmcfl leaves, tlie runner being cut 

 cltise to its mother plant and the cuttings placed in a propagating 

 htd. The author finds cuttings less successful than layers, the 

 plants being less vigorous and slower to multiply. Only about 35 

 per cent as many cutting plants can be made as layer plants in a 

 given time. In such work the original mother 

 plants were set about si.x feet apart each way 

 the previous autumn in a deeply worked and 

 heavily manured bed. The growing season may 

 be lengthened by using cold frames. Intensive 

 culture is essential, so is watering with liquid 

 manure. Plants produced by this method were 

 exceedingly vigorous and yielded abundantly the 

 following year, whereas by the ordinary field 

 method, they did not bear well until the second 

 year from taking root. 



104. Bulbs are usually subterranean, 

 specialized buds composed of short 

 rudimentary axes inclosed in trans- 

 formed and thickened leaves or bulb 

 scales filled with food. Usually 

 they are formed at the bases of the stems, 

 though they often develop from buds inside the parent 

 bulb, generally in the axil of a bulb scale. They are 

 common among plants which have a long resting 

 period, as in arid regions, though they also occur among 

 plants of other regions. 



FIG. 61— 



TRIMMING 



STRAWBERRY 



ROOTS 



FIG. 62— TULIP PLANTING IN WASHINGTON STATE 



1. Making furrows. 2. Placing bulbs. As good bulbs are produced in 

 Puget Sound district as in Holland. The industry is in its infancy 



