58 DISEASES AND INSECTS. 



BLACK, BROWN, AND WHITE SCALE. 



Bulbs that make an annual growth are seldom troubled 

 by these insects ; but they are not uncommon on those with 

 evergreen foliage. 



The simple treatment of washing the foliage and leaf- 

 stalks of the infested plants with a sponge dipped in weak 

 warm soapsuds will be found effectual in all cases. 



House-bulbs are seldom liable to be attacked by these 

 insects. 



MILDEW 



Sometimes attacks soft-foliaged bulbs, but is easily re- 

 moved by a sprinkling of flower of sulphur over the 

 diseased part, or by putting sulphur on the flue of the house 

 in a pan of water, as previously directed. It is caused by 

 too much moisture, and is especially prevalent in damp 

 warm weather. 



ROT. 



This disease attacks the bulb, and is not susceptible of 

 curative treatment. When a bulb is attacked by wet or 

 dry rot, if it has not progressed too far, or is not in the 



