284 Diseases of Greenhouse Crops 



Blight of the Variegated Plantain Lily 

 (Funkia Undulata, var. Variegatd) 



Caused by Colletotrichum omnivorum Hals. 



Symptoms, Th;s blight is severe on the broad 

 and the narrow leaved varieties, and especially on 

 Funkia undulata var. variegata. The disease ap- 

 pears as spots at about the middle of the leaf. The 

 tissue in these soon drop out, leaving the veins which 

 run lengthwise. Badly diseased foliage have a 

 shredded appearance. The same disease also at- 

 tacks Aspidistra lurida var variegata, a plant closely 

 related to the Funkia. At present, little is known of 

 the nature of the causal organism. 



Control, , Halsted recommends spraying with 

 Ammoniacal copper carbonate. Attention should be 

 paid to securing resistant varieties. 



Lily of the Valley {Convalaria majalis) 



Cultural Considerations, This plant may be 

 forced at any time of the year. Sand is the best soil 

 in which to grow it. It is advisable to begin with 

 a bottom heat of 50 degrees F. and quickly raise it 

 to 85 degrees. The plants require an abundance of 

 water during the forcing period. 



Diseases of the Lily of the Valley 



Lily of the Valley is considered a hardy plant. 

 They are however known to suffer from two diseases. 



♦Halsted, B. D., New Jersey Agr. Expt. Sta., Thirteenth Ann. 

 Rcpt: 296, 1892. 



