June 17, 1994
Manure is the oldest fertilizer known to civilization. Many gardeners feel manure is superior to synthetic products. The use of manure however, does present a small risk of food-borne illness from manure contamination. Possible contaminants include salmonella, listeria, E. coli 0157:H7, roundworms, and tapeworms. Fortunately the risk of illness can be minimized in several ways.
For many gardeners, shady areas are problem spots in the home landscape. Many plants, however, perform well in shady areas. Selecting and planting shade tolerant plants can turn a shady problem site into an attractively landscaped area.
The cottony maple scale outbreak described in last weeks newsletter seems to be very limited in distribution. So far, the noticeable presence of the scales fluffy white egg cases on the twigs of silver maple trees has been reported in the relatively small triangular area of NW Iowa between Kossuth, Greene and Sac counties, and in Black Hawk County. Other isolated infestations are certainly possible.
The following points recap the highlights of this pest.
Hostas are one of the most popular perennial plants grown in gardens today. While many gardeners grow them because of their shade tolerance, some varieties thrive in sunny sites as well. Hosta foliage offers a variety of leaf shapes, textures, and colors. The flowers of many are fragrant and bloom in various shades of purple and pink as well as white. There are hundreds of hosta varieties from which to choose and more varieties become available each year.