POISONOUS AND INJURIOUS PLANTS AT 
MANAGEMENT AND Controu.—Control is unnecessary because of the 
scarcity of poinsettia except in gardens. Livestock should not be al- 
lowed access to plants grown as ornamentals. Unwanted plants may 
be either grubbed out, or killed with herbicides where there is no 
danger to surrounding vegetation. 
Euphorbiaceae, or Spurge, Family 
Euphorbia tirucalli L. (fig. 25) 
Pencil Euphorbia, Milkbush 
DescriptTion.—This large shrub, or small tree, is 15 to 30 feet high: 
it usually has a single trunk but its many branches form a dense crown. 
The bark is gray and fissured on older portions of the stem but dull 
green and smooth on the remainder of the plant. The young, cylindri- 
eal branches are fleshy, smooth, and green. The fleshy, cylindrical 
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BN-—13284 
FIGURE 25.—Pencil Euphorbia (Euphorbia tirucalli L.) 
