I02 



THE CANADIAN HORTICULTURIST. 



kind of spore is formed, which rests over 

 winter in the leaf and infects new plants the 

 following season. 



As to treatment, the disease may be pre- 

 vented from spreading if the plants arc 

 dusted with sulphur or sprayed with sul- 

 phide of potassium, an ounce to two gallons 

 of water. To be effective these must be ap- 

 plied early at the first indications of the 

 disease. 



Again, to prevent the infection of the 

 spring crop, the resting spores must be at- 

 tended to, and these spores can be destroyed 

 to a large extent by collecting and burning 

 all the diseased leaves. It will not do to 

 allow the leaves to rot or even to bury them 

 in the ground, for the resting spores will re 

 tain their vitality for two or three years. Do 

 not plant onions on the same plot more than 

 one or two years in succession. I should 

 be pleased to hear from all persons who have 

 difficulty in growing onions on account of 

 the mildew or maggot. 



Tom&to Growing 



I^HIS branch of fruit growing is much 

 followed in sections where the soil is 

 sandy loam, or otherwise suitable. For 

 market an early variety, such as the Ear- 

 liana, is needed, and it should be grown in a 

 greenhouse and hardened by transplantings 

 early enough to be in flower when sel 

 in the open field. Danger of spring frosts 

 is scarcely over before the end of May, so 

 that even in the most favored sections it is 

 risky, to say the least, to plant out earlier. 

 The writer has contracted for such plants at 

 $10.00 per 1,000. 



Tomatoes for Factories 



FOR this purpose of course quantity 

 rather than earliness is the object, be- 

 cause the grower usually contracts to sell 

 his whole crop at a fixed price. Very rich 

 soil is not considered necessary ; land that 

 wnll produce a good crop of corn will do 



very well for tomatoes. A clay loam, not 

 too heavy, is preferred by many to sandy 

 loam for giving a large crop. Such land, 

 of course, is better fall plowed. The plants 

 for such a plantation can be had at a nomi- 

 nal price, because earliness is not essential ; 

 or they may be grown in a cold frame in 

 rich warm soil on the south side of a build- 

 ing or close board fence, until "four or five 

 weeks old, when they may be set out in the 

 field in rows about four feet apart each way, 

 for cultivation two ways. Begin cultivation 

 early, being careful not to touch the plants 

 with the cultivator, which is ruinous to 

 them, and- continue until the vines begin to 

 fall flat and cover the ground. 



The Soda Bordeaux 



A SUBSCRIBER in Waterdown asks 

 for the method of preparing the soda 

 Bordeaux mixture, mentioned in the Janu- 

 ary number of this journal; also the cost of 

 the soda. He is not, he says, at all in love 

 with the Bordeauk mixture. In this, no 

 doubt, we will all agree with him, and 

 heartily wish that some cleaner and less 

 troublesome fungicide were forthcoming. 

 The new nozzles, which do not drip upon 

 the hands, are a great convenience to the 

 operator while spraying, and remove one of 

 the troublesome associations of its use. At 

 Rochester this soda mixture was discussed, 

 and while acknowledged to be effective, it 

 was described as very hard upon the hands 

 and upon the pump. The soda is cheap 

 enough, only about 3 or 4 cents a pound. 



Mr. Macoun, horticulturist of the C. E. 

 F., Ottawa, gives the following formula for 

 the soda bordeaux : 



4 lbs. sulphate of copper. 



5 lbs. washing soda. 

 40 gallons of water. 



He adds : This mixture has been used 

 rather extensively in Great Britain and 

 Europe during the past few years, especially 



