About Delphinium glaucum S.Watson
Delphinium glaucum S.Watson is a tall larkspur that grows one to several tall, stout, pale green erect stems, which can reach close to 3 metres (9.8 ft) in height. Its lobed leaves are typically only found at the base of the plant. A large inflorescence grows at the top of the stem, and this inflorescence alone may be over 1 metre (3.3 ft) long. The inflorescence usually holds more than fifty widely spaced flowers, each borne on a pedicel a few centimeters long. The sepals are flat, and extend outward to the sides or point forward. Both sepals and petals are colored dark blue to deep purple, though the top two petals may be lighter, ranging to almost white. The petals may be somewhat wrinkly. The flower's spur is approximately two centimeters long. Larkspurs have long been linked to livestock poisoning in North America, and Delphinium glaucum (previously referred to as D. brownii) has caused poisoning issues on rangelands in Alberta, western Canada.
