~ *ZENITH B-StC-Pr An exhibition variety of 
merit. Nicely formed flowers with good 
substance. Flowers face side on good 
stems. Deep reddish purple, shading 
lighter toward the tips of petals. 
Size 6x3. 
Pot Root $1.00, Plant .75 
ZERO (Rocky River) Most standard white 
formals of B size have short stems. 
Here is one that has a long stem. The 
white is lightly flushed lavender at cen- 
ters and sometimes near tip of petals. 
Well formed, and good substance, but 
some early blooms are inclined to 
“long" centers, a trait that disappears 
as production increases. A midseason 
variety that held up well in late season 
when most other varieties had open 
centers. Tall, wide spreading plants, 
with slender canes, permit cutting with 
six foot stems. Size 8x3!/. 
Root $5.00, Pot Root $3.50, Plant $2.00 
ZERO 
RED SPIDER CONTROL 
The common "'red spider’ continues to be a serious pest of dahlias, especially when 
DDT is used for the control of other pests. PARATHION with DDT has continued to 
give excellent control in our fields, of nearly all dahlia pests, including red spider, 
during the past season. Caution must be exercised in using Parathion to prevent, 
contamination of skin and clothing, and inhaling the fumes. 
Other materials tested by Dr. R. B. Neiswander at the Ohio Experiment Station 
at Wooster, O., which showed distinct promise in the control of "red spider'’ included: 
Ovatran, Aramite, EPN, Malathon, Dimite and NPD. With the exception of Malathon 
and Parathion, these materials are almost strictly miticides as they control only “red 
spider’ and should be used with DDT for control of other dahlia pests. Basically, these 
materials are less dangerous to the user than Parathion. 
In Dr. Neiswander's test plots, Parathion and Malathon were not used with DDT as 
were the other materials. It was our personal observation that, while these two control 
other insects, as well as “red spider’, better results would have been obtained if they 
too had been used with DDT. The '‘'lasting" effect of both are comparatively short, 
and because of that, it appeared that pests other than red spider were not completely 
held in check for the full period between sprays. This seemed to be evidenced by the 
fact that mosaic transmitted by Peachtree Aphids, and stunt caused by Tarnished 
Plant Bug, were present to a greater extent than in the same varieties in other plots 
where DDT was used with the miticide. 
All of the above materials are compatable with DDT and can safely be used in the 
same spray. Check dealer recommendations for proper concentrations. 
INDELIBLE MARKING OF ROOTS 
Roots may be marked with an indelible pencil when labels are not practicable, or 
desirable. Wet and clean a portion of one of the more mature roots on the clump. 
Then wipe off any excess moisture with a dry cloth, and write the name of the variety 
on the root, applying no more pressure on the pencil than necessary for a clear marking. 
Marking two roots on each clump is a wise precaution. 
BF 
