This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
Native. Perennial. Propagates by seeds. Time of bloom: May to July. Seed-time: July to September. Range: Virginia, the Carolinas, and Georgia, to Arkansas and
Missouri, northward to Minnesota and the Saskatchewan. Habitat: Prairies, fields, and meadows.
A very beautiful species often cultivated in gardens. Stem one to two feet in height, slender, clothed in very fine, ashy-gray hairs. Leaves deeply three- to five-parted, the lobes with very slender, almost linear bases, and each again twice or thrice divided into narrowly linear segments; petioles long and slender, dilated at the base. Racemes terminal, four to eight inches long, the flowers numerous, large, short-pedicelled, deep sky-blue occasionally varying to white; the spur is long, and usually lies horizontally with the tip tilted upward; four petals shorter than the sepals, the lower two densely bearded within. Follicles in threes, about an inch long, covered with fine down, and tipped with an awl-like beak; they are held erect or very slightly spreading, their pedicels close to the stalk. Seeds about a tenth of an inch long, angled, and roughened with transverse wrinkles.
Fig. 112. -Dwarf Larkspur (Delphinium tricorne).
Means of control the same as for Dwarf Larkspur.