286 Diseases of Greenhouse Crops 



leaves, hence the trouble is of no economic impor- 

 tance. 



Mignonette {Reseda odorata) 



Cultural Considerations. The soil required for 

 mignonette is about the same as for carnations. 

 Raised benches are preferred rather than pots. An 

 inch of well rotted stable manure is placed at the 

 bottom, and four inches of the compost on top. 

 Young seedlings require an abundance of ventilation. 

 During bright weather temporary shading is neces- 

 sary. Mignonette is very sensitive to overwatering. 

 The watering should be done in the morning. If 

 water remains on the foliage over night, the plants 

 will become badly spotted. The temperature of the 

 house in cloudy days should not run above ^^ degrees 

 F. and in bright days not higher than 65 degrees. 



Diseases of the Mignonette 



Mignonette is subject to but few diseases. The 

 most important of these may be mentioned as fol- 

 lows: 



White Rust 



Caused by Cystopus Candida (Pers.) Roussel. 



This disease is commonly met with out of doors 

 on practically all cultivated cruciferous plants. In 

 Europe, white rust seems to attack the mignonette, 

 but there are no records of similar cases in the United 

 States. 



