170 



THE FLOKAL WORLD AND GARDEN GUIDE. 



The same with onions. If the ground 

 is well tilled, and kept rich in manurial 

 matters, they may be grown year after 

 year with success ; but it is not advisable 

 even with these things, to make an ex- 

 ception. In parcelling out your laud, 

 you must of course be guided by your 

 wants, and the purpose you have in 

 view, but to secure a good rotation 

 course, it is best not to appropriate 

 more than one fourth to potatoes, and 

 if one fourth more is taken up with 

 permanent crops, you have three fourths 

 on which you may grow potatoes, say 

 on No. 1, this year, No. 2, next year, 

 No. 3, the next. Thus, each plot will 

 produce potatoes but once in three 

 years ; and if a crop requiring heavy 

 manure, was taken off the piece that is to 

 have potatoes next year, manuring for 

 the potatoes would not be necessary, for 

 they do better in soil that has been 

 heavily manured and cropped the pre- 

 ceding season. But any scheme will 

 do which does not require the land 

 to be cropped twice in succession with 

 plants belonging to the same natural 

 families — with the pea and cabbage 

 tribes, it is, perhaps, more important 

 than with any, never to fatigue the 



ground with them. The state of 

 the ground, too, as to previous 

 manuring, is very important, for it is 

 sheer waste to plant a crop that will 

 do on poor soil, in one that has been 

 much enriched, merely for the sake of 

 a change. You cannot grow good 

 celery without abundance of manure, 

 solid and liquid ; and when it is liberally 

 grown, the ground, instead of being 

 exhausted, is in the best possible con- 

 dition for onions. Beet does best on 

 ground that has not been manured for 

 two seasons, because it is not wanted 

 large; the same with onions for pickling, 

 which need the poorest soil you have ; 

 carrots and parsnips come well after peas 

 and potatoes, and better than following 

 close on the heels of cabbage or cauli- 

 flower, because, for these latter you 

 would use abundance of half rotten 

 manure, and at the next planting, it 

 would not be so far decayed and ex- 

 hausted, but that the carrots would 

 fork and throw out side roots to reach 

 it. Lastly, it is advisable to succeed 

 every spindle-rooted crop, such as 

 carrots, with one that has fibrous roots, 

 such as peas, and vice versa. 



THE TURNIP-FLY. 



I am not aware of its havitig been noticed 

 that there are at least three insects of the 

 same habits and destructive nature as the 

 turnip-fly. 



1st. The turnip-fly (or beetle), commonly 

 so called, with a buff stripe on each side of 

 the back. 



2nd. A beetle like the last, but without 

 the stripes. This attacks seedling rhubarb, 

 and, along with the next to be mentioned, 

 has entirely destroyed one sowing for me. 



3rd. An extremely minute, sometimes dull 

 olive, sometimes dull blueish, insect, of the 

 same nature as the two former, but not 

 a quarter the size of the turnip-fly. It 

 jumps like it, and is more frequently to be 

 found on the earth beside the plant, than 

 upon it. This is a terrible pest in the flower 

 garden. Among other things, it took oft' 

 nearly the whole of two sowings of Nemo- 



phila insignis, and entirely eat off some old 

 clove carnations that were moved rather 

 late, besides having, as I have already men- 

 tioned, done its part in destroying a sowing 

 of rhubarb. 



Along with a florist in the neighbour- 

 hood, I at first supposed the loss of the 

 carnations was to be attributed to slugs ; 

 but having pruned off a decaying bit one 

 day, on going to take it up a minute after, 

 I found it thickly clustered over with minute 

 dots, of a dirty colour, which jumped 

 off on being approached. This directed my 

 attention to the growing plants, and I found 

 the cut I had recently made covered the 

 same. After observations proved, beyond a 

 doubt, that these minute gentry were the 

 cause of their decay. 



Whitlaiid. 



A. B. 



PAWLONIA IMPElilALIS 



Ix the gardens of II. C. l'omfret, Esq. 

 (ex-High Sheriff for Sussex), a Powlonia 

 imperialis came hi to full bloom this year. 



It produced flower-buds last year, but, un- 

 like Lord Portman's, was unprotected. It 

 was a splendid sight. II. S. T. 



