260 CULINARY GARDENING. BOOK I. 



the soil to be often pulverized while growing, as potatoes, pease, 

 and most drill crops ; others admit of it but in a small degree, 

 as onions, leeks, carrots, &c. Some are occasionally and often 

 materially injured by it, as strawberries. With respect to 

 duration, some are sown and removed within three months, 

 as early crops of turnips, radishes, brassica plants, for removal, 

 &c. others continue double that time, as onions and po- 

 tatoes; others treble, as frequently brocoli, and cabbages; 

 some continue two seasons, as parsley, fennel, &c. ; others 

 for several years, as strawberries, asparagus, artichokes, &c. 

 A judicious gardener, by studying the above, and other divi- 

 sions which might be made, will thence contrive a proper suc- 

 cession of crops: thus celery, by being planted in hollow 

 trenches, pulverizes the soil in a high degree ; by requiring a 

 considerable quantity of manure, it enriches it ; both which 

 properties are necessary for the production of plants of large 

 ramose or fasiculate roots, which penetrate deep into the soil, 

 such as artichokes, scorzonera, asparagus, &c. Again, these 

 crops by remaining long on the soil afford, when removed, an 

 excellent situation for such as are more transitory, as pease, po- 

 tatoes, &c. Every experienced gardener knows that it is of 

 the utmost importance to study a proper rotation of crops; for 

 the same thing happens in gardening as in agriculture, when- 

 ever two or three of the same kind, or of the same natures, fol- 



