Bronze birch borers . This is a pest of birch trees. The borers emerge as adults 

 from under the bark of the upper limbs. Damage first appears in the tops of af- 

 fected trees. The upper limbs may die as the borers tunnel under the bark, leav- 

 ing raised rings around the limbs. These raised areas may show up on limbs that 

 appear to be healthy, but are actually infested with borers. If borer symptoms 

 are present, apply a treatment in late May in southern sections of Illinois and 

 early June in northern ones. Spray the trunk and limbs thoroughly with dimeth- 

 oate (Cygon or De-Fend) . Follow the directions on the container for mixing the 

 spray. Repeat the treatment two weeks later. Keep the trees in a vigorous state 

 of growth with adequate moisture and fertilization. 



Holly leaf miners . These can be found tunneling between the leaf tissues of many 

 types of holly. They leave a yellowish mine, and will continue to damage the 

 leaves if not controlled. Control is still possible. Use a spray of dimethoate 

 (Cygon or De-Fend) . Follow the directions on the label for mixing the spray. 

 Thorough coverage is important for effective results. Another spraying may be 

 needed about the middle of June. 



Bagworms . Last year's bagworms should be picked from- evergreens and trees and 

 burned. This is about as late as you can do this before the worms emerge. About 

 half of these bags will have eggs inside. These eggs will hatch during the next 

 two weeks in the southern section; about two to four weeks in the central part; 

 and about four to six weeks in the northern area of Illinois. The more eggs you 

 destroy now, the easier it will be to control the bagworms later. 



Clothes moths and carpet beetles . They are getting ready for a summer feast on im- 

 properly stored woolens. A small hole chewed in a piece of clothing can destroy 

 its entire value. To keep woolens safe from damage by these insects, follow these 

 suggestions. 



1. Dry-clean or wash woolens and place them in clean, plastic storage bags or 

 other insect- tight containers. 



2. Woolens that are not dry-cleaned or washed should be hung in bright sunlight 

 for a full day and brushed thoroughly before storing. Pay particular attention 

 to pocket interiors, cuffs, and folds when brushing. 



3. If the storage area is not insect-tight (as is true of most closets, trunks, 

 and boxes) , vacuum the container thoroughly and spray all inside surfaces with 

 a 0.5-percent diazinon mixture, applied from a pressurized spray can. 



4. Cedar-lined chests are usually insect-tight, but all fabrics need to be insect- 

 free before storing. The cedar oil vapors destroy small larvae, but do not kill 

 the larger ones. As added insurance in cedar chests, you can spray the inside 

 surfaces as suggested above or use a fumigant material. Napthalene or PDB (para- 

 dichlorobenzene) are commonly used- -in moth crystals, flakes, or balls. Use at 

 least 1 pound of crystals, flakes, or balls for every 100 cubic feet of space. 



5. Woolens not placed in insect- free containers can be protected by treating in 

 light amounts with a 0.5-percent diazinon mixture from a pressurized spray can, 

 or by liberally moistening them with a fluoride-base fabric solution. This 

 protection will last a year or more, unless the woolens are washed or dry-cleaned. 

 Caution: Infants' clothing should be washed or dry-cleaned before use . 



