Sub-Irrigation 



will even extend down through the crevices of the brick or tile, frequently 

 partially rilling the water canals. It would seem to be unnecessary to state 

 that a sub-irrigation bench should not be intrusted to the care of a novice 

 in growing carnations, but should always be in charge of some skilled 

 grower who has had experience and practice in its management. 



When sub-irrigation was first broached to carnation growers it was 

 thought by some that it would prove a preventive of all diseases, and that 



Section of Sub-Irrigation Bench 



Showing Carnations growing under Sub-Irrigation treatment Note^how roots 

 extend through soil to floor of bench and crawl over bench floor 



we would not be troubled with such insects as red spider; but this has not 

 been proved by actual use, for red spider, once introduced upon plants in- 

 a sub-irrigation bench, propagates there the same as upon those grown 

 upon other types of benches. But it may be said in favor of the sub- 

 irrigation bench that plants growing thereon are in a stronger, more healthful 



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