112 Horticultural Department. [Bulletin 120 



frequently as to the growth and characters, but in no case has there 

 been noted any difference that could be regarded as more than indi- 

 vidual, as great differences occurring in a species from a single as in 

 the same species from the different states. 



Until 1902 the trees were given sufficient cultivation to keep down 

 weeds and secure good soil conditions. The last two years the trees 

 have furnished sufficient shade to keep down large growing weeds. 



The experiment was to some extent duplicated in 1897, the seeds 

 being planted that fall and the following spring as the particular 

 species required. 



The winter of 1898-'99 was very severe and many seedlings were 

 killed back, but, as in the lots planted the preceding year, no differ- 

 ences were noted that could be referred to the locality of seed collec- 

 tion. Many stems were killed to the ground, but seedlings from 

 Alabama, Kentucky and Ontario were affected alike. The rate of 

 growth has not shown any special variation from the other lot. 



Some trees have been transplanted from the rows, but many are yet 

 growing in the rows where the seed was planted and warrant the con- 

 clusion that planting seed where the trees are desired is an excellent 

 way to secure groves and wood lots. 



The young seedlings require good care the first season, but after 

 that are no more difficult to cultivate than larger trees. In localities 

 where tree-growing is somewhat difficult, planting the seed is to be 

 recommended. 



In addition to species listed in the table, seed of Hardy catalpa and 

 Osage orange were included in the same planting. Good growths 

 have been made, the catalpa now averaging 14 feet high and 3 inches 

 in diameter at two feet from the ground. The Osage orange averages 

 9 feet high and 1J inches at two feet from the ground. 



Acorns of Bur oak, Quercus macrocarpa, from Vermont, Illinois 

 and Kansas were planted in the fall of 1897 and germinated very 

 well and have been uniformly hardy and vigorous. No difference is 

 apparent in lots from the various states. At this date, November 

 1903, the Bur oaks vary in height from 3 feet 9 Cinches to 11 feet 9 

 inches, averaging 7 feet 8 inches. At two feet from the ground the 

 maximum diameter is 2J inches and the average at two feet is 1J 

 inches. 



Acorns of the Red oak, Quercus rubra, from Kansas, were planted 

 in the fall of 1897, have germinated well, and have made fine growth 

 for this species. In height they vary from 6 feet to 10 feet 3 inches, 

 averaging 9 feet. The average diameter is 1J inches. 



Plate 12 shows the planting of 1896 in August 1903. 



