138 MINNESdTA STATE HORTICULTURAL SOCIETY. 



OUR NATIVE ELMS. 



(A Uorrectioii.; 

 LYCURGUS K. MOVER, MONTEVIDEO. 



Through inadvertence an error was made in the list of elms pub- 

 lished in the January number of the Horticulturist. The cork, 

 or rock, elm and the slippery elm should have been listed as en- 

 tirely distinct trees. 



Our white elm (Ulmus Americana) is known to everj' one. It 

 flourishes throughout th& state except where the soil is very dry. 

 Where there is plenty of moisture, it is the finest of American shade 

 trees. 



The slippery elm (Ulmus pubescens) is frequently called red elm 

 in Minnesota and in other states. It is native to deep rich woods, 

 and the boys know it for its mucilaginous bark. The slippery elm 

 is a fine tree to introduce into a wooded border, as its large leaves 

 give it almost a tropical appearance. 



Then we have the cork elm (Ulmus racemosa). This tree has 

 received a variety of common names, such as rock elm, hickory elm, 

 white elm, Thomas elm, northern cork-barked elm, cork-bark elm, 

 northern cork elm, wahoo, cliff elm and corky white elm. It was 

 first described by Thomas in 1831. It does not seem to be a very 

 common tree in Minnesota. When Prof. MacMillan published his 

 " Metaspermae of the Minnesota Valley " in 1892, the only specimen 

 in the University Herbarium had been sent in by the writer from 

 Montevideo. On referring to Upham's " Flora of Minnesota," one 

 finds that Leiberg had collected it in Blue Earth county, that Prof. 

 Aiten reported it from Nicollet county, that Juni found it common 

 at New Ulm and that Garrison reported it from the upper Missis- 

 sippi. 



At Montevideo the cork elm appears to be common where ledges 

 of granitic rocks extend through timbered land. It is frequently 

 found, too, in rich woods where the land is high and roiling. It 

 does not seem to grow on low bottom land, where the common 

 white elm flourishes. As found here, the trees do not seem to 

 attain a very great size. The cork wings on the branches give the 

 tree a very peculiar appearance. 



The cork elm appears to be better adapted to cultivation on high, 

 dry, rolling ground than either of the other elms- We look upon it 

 as one of the luost promising trees in our plantations. 



Roses in Window Gardens. — To have healthy roses in the house 

 the plants should be washed and syringed frequently, and they 

 must have plenty of light and sun. They have to be watered when- 

 ever the soil becomes dry. Then they should have enough water 

 to saturate the entire ball of soil, but not so much that the water 

 stands around their roots in the saucers beneath them, which is a 

 rule to be observed with all house plants except aquatics. Fading 

 flowers have to be removed at once. Straggling branches should 

 be cut off. Few plants bear pruning better than the rose. Keep a 

 constant lookout for insects. 



