The Dandelion in Colorado 
17 
vivors were much weakened. Some thinning out of the grass fol¬ 
lowed the two treatments of this plat. 
Plat IX, when examined 28 days after digging, showed a few 
sprouts from dug plants, while numerous seedlings were showing, 
with leaves 1 to 3 inches long. The examination of May 23, 1916, 
showed 235 plants, which includes the seedlings that survived the 
winter. 
Plat X was sprayed late in the year to determine what effect 
this might have as compared with that done early in the season. 
When examined May 18, 1916, the remaining plants, 233, were 
nearly all very small and weak, while hardly a dozen were strong 
enough to produce any bloom. 
Fig-. 8. Sectional view of dandelion head, showing the numerous little 
flowers (florets) of which it is composed. Those in the center have not yet 
opened. Twice natural size 
Experiments in 1916 
The experiments during this season were for the purpose of 
securing further data on the effects of digging and spraying the 
dandelion. 
Plat I covered an area of 18 square feet and contained 92 
plants, mostly of fair size, when dug May 13. The plants were 
dug to a depth of to 3 inches, with the purpose of determining: 
1. If plants dug in early spring will bloom during the latter 
part of the season. 
2 . The number of plants that fail to recover from the pro¬ 
cess. 
None of the plants had bloomed by September 2, at which date 
they were counted and dug again. It was also found, at this date, 
