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subjected during severe weather — planting under circumstances 

 that induce growth at a season when the wood should be matured 

 — planting late in the autumn, or in winter; using plants that 

 have previously been under artificial treatment, and which have 

 not been properly hardened off, and employing others altogether 

 too young ; besides many other contingencies, to each and all of 

 which may be attributed the loss of many plants that are, never- 

 theless, perfectly hardy. Of the injury that plants receive under 

 the influence of a strong draught, during severe weather, a notable 

 instance occurred here. A number of plants of Cupressus 

 Goveuiana and C. thurifera elegaus were placed together under a 

 high hedge. Many of them, near one end of it, were for some 

 time exposed to a strong current of frosty air, and so much were 

 they injured, that they have since died, while those not so 

 exposed, but otherwise under precisely similar circumstances, 

 were not injured in the least. And the same kinds of plants in 

 the open nursery, without any protection whatever, are also 

 unaffected. And in looking at the effects produced on vegetation 

 generally, during the past winter, it will, we think, be pretty 

 evident, that to the continuance of parching winds, which visited 

 us early in the year, much damage is to be attributed. The 

 previous very mild weather not only did not check vegetation, 

 but on the contrary excited it. So much, indeed, was this the 

 case, that many plants were in an active growing state at mid- 

 winter. This was especially the case with many kinds of Juniper 

 and analogous plants. From this cause Taxodium sempervirens, 

 one of the hardiest of plants, has suffered more than anything 

 else in our nursery. The past season's growth is in almost every 

 case wholly destroyed, and in some instances, we fear, the plants 

 are past recovery. To exemplify the fact that it was not London 

 plants that alone suffered, the common Laurel has in many 

 places sustained very great damage, the young shoots and leaves 

 have been killed, and the older foliage scorched and blown off. 

 And the same circumstances are observable in numerous other 

 equally hardy plants, that were caught under similar circumstances, 

 viz., in an active condition. Of course, considerable damage would 

 have been sustained by plants in the condition above-named, 

 under the influence of severe frost, and without the accompani- 

 ment of scorching winds, but it would have been in a much less 

 degree. The evaporation from the leaves of plants, as well as 

 from the young shoots, is very great when acted upon by a brisk 

 drying wind, and when, as must be the case in winter, absorption 



