198 GREEN-HOUSE OF ORANGES, ETC. [March. 



nonly cold weather : at such times be attentive to ward off 

 danger by applying artificial heat. 



OF WATERING. 



^ Look ov3r the pots and tubs at least every alternate day, 

 to see where water is wanted. In watering, too much 

 caution cannot be used, especially during winter and the 

 commencement of spring. It was observed last month what 

 would be the effect of too much water. It may be remarked, 

 that if the exterior of the pot is very damp, the soil inside is 

 too wet, and in that state, is uncongenial to vegetation, which 

 now begins to start, and ought, by all possible means, to be 

 encouraged, which we do very effectually with Guano water 

 once a week, for a few weeks, using about one pound to five 

 gallons of water, allowing it to stand twenty-four hours, and 

 stir it up before using. If you are troubled with worms in 

 the pots, give one or two waterings with lime-water, one 

 pound of lime in four gallons of water ; allow it to stand 

 twelve hours to settle, pour the clear water into another 

 vessel, and use it only. People may be frequently observed 

 watering all plants indiscriminately, not taking the trouble to 

 look into or feel the state of the soil in the pots or tubs, and 

 thus, by going over them three or four times in this manner, 

 will be sufficient to put the plants in such a state that they 

 will not be recruited for some months. Hence the reason of 

 so many sickly plants. 



Camellias, where there are collections, will continue to 

 flower. Treat them according to the directions given last , 

 month. 



ORANGES, LEMONS, ETC. 



Be sure they are not too wet, as too much humidity as 

 well as aridity causes their foliage to have a yellow appea <- 

 ance, with this difference, that in the former case the foliage 

 is the same to the touch as when green ; but in the latter, it 

 is soft and dry. We have observed trees in tubs and half- 

 barrels, with holes all round their sides. This is a ludicrous 

 idea, having the appearance of keeping the water from reach- 



