26o Diseases of Greenhouse Crops 



opened gradually in the morning and closed like- 

 wise towards the evening. During cloudy days of 

 November and December, care should be taken not 

 to overfeed the plants with liquid manure. 



Fungi on Gardenias 



Gardenias are apparently very hardy plants. The 

 following are the recorded fungi: Fumago vagans 

 Pers., Hemileia vastatrix B. and Br., Hypocrella 

 gardenia Henn., and SpKarella gardenia Cke. 



GENisTiE {Cystisus racemosus canariensis) 



Cultural Considerations. In the fall, the plants 

 are started at a low temperature of about ^^ de- 

 grees F. The plants are easy to grow and require 

 no special care if proper attention is given to the 

 ventilation and watering. 



Diseases of Genista 



Genistje are very hardy plants. There is but one 

 disease recorded by Kirchner* on greenhouse plants. 

 The causal fungus is Ceratophorum setosum Kirch., 

 which causes a disease on leaves and young shoots of 

 Cytisus. 



Geranium {Geranium sp.) 



Cultural Considerations. Geraniums are mostly 

 grown as a pot plant to be sold for house or out- 



* Kirchner, O., Zeit. Pflanzenkrank., 2:324, 1892. 



