CHAPTER X 



INSECT PESTS AND DISEASES 



THEEB kinds of lilies, L. longiflorum, L. speci- 

 osum and L. auratum, are subject in their early 

 stages of growth to onslaughts of the green fly 

 (aphides). These insects get in the unfolding 

 leaves and will cause imperfect bloom if not 

 checked. They are particularly trying in the 

 case of L. longiflorum, which has denser foliage 

 than the others. Immediate fumigation and 

 more of the same thing later is a good remedy ; 

 or syringing, first with a nicotine solution and 

 then with tepid water, may be substituted. 



The most destructive of the three parasitic 

 fungi and the commonest is Botrytis cinerea. 

 This shows itself in brown, or brownish, specks 

 on the stems, foliage and bads. Eventually it 

 turns into a soft gray mold ; sometimes into lit- 

 tle black spots that become imbedded in the 

 scales. 



This fungus, which is very trying in the case 

 of L, candidum and L. testaceum in the garden, 



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