Larkspur and Other Poisonous Plants. 
9 
serious consideration. This I have advised in some cases where 
the plants were growing in a circumscribed area. It is rather sur¬ 
prising the amount of land that can be cleared by three or four 
men in a day. In one instance a patch of aconite covering possibly 
two acres that had been a source of trouble for several years was 
finally cleaned out in half a day by four men. Of course, where 
the plants are well distributed over a range of several thousand 
acres this would be impracticable and all but impossible. There are 
many instances, however, where the loss in one year would pay 
for the digging out of every plant. The results of observation and 
experiment are conclusive that the most dangerous period is in the 
early spring, and that the plants not only become unpalatable but 
cease to be dangerous at the flowering period. The most effective 
means of prevention is for the stockman to become thoroughly fa¬ 
miliar with the different species of larkspur, and having located 
them, pasture the animals on non-infected ranges until the danger¬ 
ous period is past. The time that they can be placed on larkspur 
pastures will depend upon the season and the altitude. At high 
elevations (9,000 to 11,000 feet) it would not be safe before about 
the 15th of July. West of Fort Collins, at an altitude of 5,500 
feet, the stockmen feel quite safe by the 20th of June. 
