52 SMITH'S CHRYSANTHEMUM MANUAL, 



of paraffine should then be added and the mixture allowed to simmer for a 

 minute, or so, care being taken to prevent it from boiling over. The dres- 

 sing should be allowed to stand until it gets clear, and may be kept in 

 bottles. A quarter of a pint of the dressing may be used to a gallon of 

 water. If, however, the fungus is very bad and has obtained a hold 011 the 

 plant, double strength can be used without injuring the chrysanthemum." 



Leaf Spot With this fungus (Septoria Chrysanthemi E and D) the 

 spore bearing cavities are imbedded in the leaf tissue, and as they mature 

 the spores ooze out of these cavities and thus spread the disease. They 

 may be killed by applying Bordeaux mixture or some similar fungicide. 

 Another fungus disase which often attacks the chrysanthemum is known 

 as Clyndrosporium Chrysanthemi. It is a more rapid grower than the 

 Septoria and the plants affected by it are often so stricken down as to 

 be unable to make any blooms. 



The leaves of the affected plants begin to roll up, the outer edges turn- 

 ing under and this condition becomes so apparent that even the inexper- 

 ienced grower will know at a glance that something is wrong. Some 

 varieties seem to be strong enough to withstand this fungus, hence in 

 nearly every case where the writer has known its presence it has confined 

 itself to certain varieties and very often those growing adjacent were not 

 affected in the least. 



The best remedies are Bordeaux and ammonium mixtures. 



The foregoing is an abridged article on leaf spot by Prof. . Byron D. 

 Halstead appearing in American Chrysanthemum Annual. 



Bordeaux Mixture. 



Copper sulphate 6 pounds 



Quicklime 4 pounds 



Water 40 gallons 



Dissolve the copper sulphate by putting it in a bag of coarse cloth 

 and hanging this in a vessel holding at least four gallons, so that it is 

 just covered by the water. Use an earthen or wooden vessel. Slake the 

 lime in an equal amount of water. Then mix the two and add enough 

 water to make 40 gallons. It is then ready for immediate use. 



Ammoniacal Copper Carbonate. 

 Copper carbonate 1 oz. 



Ammonia enough to dissolve the copper 



Water 9 gallons 



The copper carbonate is best dissolved in large bottles where it will 

 keep indefinitely, and it should be diluted with water as required. 



Mildeiv A common name applied to several forms of microscopic 

 fungi. The one affecting the chrysanthemum is white and forms a coat 

 over the leaves and tender shoots and is caused by a sudden check of some 

 nature. 



Sulphur in some form is the accepted remedy, being applied as dust 

 directly to the leaves, or by mixing equal parts of sulphur and air slacked: 



