110 GARDE^I^G FOR PROFIT. 



experience soon discover that the same kind of crop can- 

 not be grown on the same ground for many years in suc- 

 cession without deterioration. A great many theories 

 have been advanced assigning causes for this, but they 

 are as yet far from satisfactory, and as this is not a book 

 of theory but of practice, I will not further allude to 

 them. The following general rules will be found useful 

 as a guide : 



1st. Plants of the same family should not be planted 

 to succeed each other. 



2d. Plants which occupy the ground for a number of 

 years, such as Khubarb and Asparagus, should be suc- 

 ceeded by annual plants. 



3d. Crops grown for heads, such as Cauliflower, Cab- 

 bage, etc., should be succeeded by crops grown for their 

 bulbs or roots. 



It is hardly practicable to vary crops according to any 

 set rule, the demand in different localities for certain 

 articles being greater than in others. Generally variety 

 enough is demanded to allow of sufficient rotation. Our 

 system of heavy manuring, deep culture, and taking two 

 crops from the ground each season, seems to do away in 

 a great measure with the necessity for systematic rota- 

 tion, which would often be found to be very inconvenient. 

 The crops of all others that we find most benefited by 

 change are the Cabbage tribe, together with the allied 

 Turnip, Eadish, etc., while, on the other hand, we have 

 grown Onions successively on the same ground for ten 

 years the last crop just as good as the first ; but, as a 

 rule of safety, vary whenever you can. 



The best of all rotation for crops is to " rest " the hind 

 whenever practicable from its continued manuring and 

 cultivating, by sowing down to grass for one, two or three 

 years ; this gives a renewed vigor and vitality that 

 nothing else will impart. The farmers and market gar- 

 deners of Long Island, who grow truck to supply the 



