GROWING FOR COMMERCIAL PURPOSES 133 



should be given until the plants have started 

 growth and roots, and even then great care 

 must be used in applying it. The plants 

 must be carefully nursed, and constantly 

 watched, until the growth is sufficiently 

 strong to remove as cuttings. Similar treat- 

 ment may be accorded to desirable varie- 

 ties that make weak growth. 



