104 How TO Grow Cut Flowers. 



years ago, and little doubt exists in his mind but that 

 their presenceat that tinie was due to the use of manure 

 which came from the cattle pens of a distillery, although 

 the manure was two years old when applied. Inquiries 

 have been heard for several years from one and another 

 as to what was the cause of the trouble, but not until 

 quite recently has it become so serious as to demand 

 sj)ecial investigation, some growers having lost whole 

 houses through its ravages within a year or two. When 

 a plant is seriously attacked by club root, the growth 

 ceases, or at least is very feeble ; the foliage turns a light 

 yellowish green, similar to a plant when it is said to be 

 " water logged." The edges of the leaves in some cases 

 seem to burn, turn brown and dry up ; in fact, the plant 

 looks, as one writer expresses it, " as though it had the 

 grippe." Such a plant, if lifted, will show more or less 

 of these knotty roots. Should a majority of the plants 

 in a bed become infested, it will be better to remove 

 and destroy both them and the soil they were in by 

 fire at once, as there is no known remedy at present 

 which will kill them and at the same time restore life 

 and vigor to the plants. These are supposed to be 

 brought into the houses in the summer, either by being 

 present in the soil or manure, or both, and as it is ap- 

 parent no remedy will easily be found to cure, it seems 

 to me attention should be turned to preventive meas- 

 ures. Some have advocated heating the soil. This is 

 not practicable, as not only the insect, but the life of the 



