WINTER-KILLING IN THE WINTER OF I905-6. 187 



At Albert Lea, arbor vitae, Scotch pine and nursery trees were 

 injured badly and strawberries were badly hurt. 



From station reports published in the July number of the Minne- 

 sota Horticulturist, we notice that at the Glencoe trial station, pear 

 trees wintered finely without extra care ; at Jeffers and Pleasant 

 Mounds trial stations, there seems to have been but little damage 

 done ; at West Concord trial station, the arbor vitae suffered. 



My observation is that the winter was very freakish, and the 

 damage done in some localities most peculiar. For instance, at 

 Lake City, in evergreens, a hedge of white pine, one-fourth of a 

 mile long, trees a foot in diameter, about eighteen years old, were 

 generally uninjured, but two of the trees were found entirely killed, 

 while not another was affected or even turned brown. What killed 

 those two trees apparently as vigorous as the others? 



A peculiar phase of blight was noticed upon the arbor vitae. I 

 call it pneumonia of the arbor vitae. We have a hedge upon either 

 side of the road leading from the railway to our nursery grounds. 

 Up to April loth, there was no sign of blight upon the foliage. Soon 

 after this date sprays of the foliage commenced to turn yellow here 

 and there. It spread rapidly covering almost the entire .plant, upon 

 which it fastened itself at varying distances. These evergreens in 

 the hedge are about five feet high. The limbs seemed to shrivel 

 until the main trunk was reached, and that commenced to dry up, 

 yet the roots seemed perfectly green and healthy. Those most af- 

 fected were dug out, and new plants set in their places. On a lawn 

 near this hedge were three pyramidalis arbor vitae, that were 

 planted about six feet apart. One of the arbor vitae was attacked 

 with this blight and died. The other two showed no signs of blight. 

 In a yard not fifty feet away, stood three other pyramidalis arbor 

 vitae. One of them had two main branches growing from the root. 

 One of these branches was attacked with this blight and died, the 

 other was not affected. Can any one explain why, here and there, 

 an apparently healthy specimen was killed? The larger arbor vitae 

 seemed to be affected more than the younger plants. A few white 

 pine were also injured. We have received reports from different 

 parts of the country of the arbor vitae being hurt with this blight. 

 In some cases the plant recovered, but in many instances it was en- 

 tirely killed. Is this the same kind of blight which attacks fruit 

 trees? 



In a yard of one of the schools at Lake City, were some large 

 Scotch pine, about a foot in diameter. These were badly hurt, 

 one being killed, but this fall most of them seemed to have recovered 

 and were looking fairlv well. 



