
The gentle curves in these rows of Evergreens follow approximately the true contour of the 
land—that is, the line row is approximately level, though the row itself is invariably curved 
SOIL CONSERVATION 
N ADDITION to the well known and highly technical 
problems of Evergreen propagation and production, 
there is another equally interesting and equally important 
phase to modern nursery operation. Soil conservation, as 
such is quite new, but its principles have long been estab- 
lished at the Hill Nursery and recognized as a “must.” The 
future of the nurseryman depends upon how well he main- 
tains the productive capacity of his soil. The finest mer- 
chandising organization and complete nursery facilities 
mean nothing unless they are supported by productive soil. 
Foremost in the problem of maintaining this productive 
soil is the addition of adequate organic material to replace 
that actual soil removed by the digging of balled and bur- 
lapped Evergreens. Organic material is the principal agent 
in the development of tilth, and its subsequent influences 
upon other soil relationships as moisture, internal drain- 
age, porosity, and the availability of plant food. Beyond 
the addition of sufficient organic matter to the soil, some 
areas require actual mechanical measures to prevent loss of 
productive top soil through erosion. These mechanical 
systems include terracing, provisions for removing surplus 
water from fields at a velocity low enough to prevent soil 
washing, and contour planting and cultivation. This last 
means, is the most easily understood and observed. The 
two pictures on this page both show the contoured rows of 
Evergreens as they are grown at Hill’s. No detail, how- 
ever small, is overlooked at Hill’s to provide the very 
finest in adapted Evergreens. 
Cultivation in contour planted rows of Evergreens 

