This very tall mountain larkspur gives rise to one of its many common names: tower delphinium. Growing 3′-8′ tall, mountain larkspur grows in moist places such as seeps, springs, moist thickets, streamsides, riverbanks and meadows at high elevations. The purple-blue flowers are highly attractive to hummingbirds. It’s not uncommon to watch many hummingbirds fighting over access to a patch of mountain larkspur when in full bloom in the high country. It is also favored by many other pollinators as well, including bees and butterflies. Due to the toxicity of mountain larkspur to livestock, efforts to eradicate mountain larkspur on public land grazing allotments in the Siskiyou Mountains in the early 1900s is well documented, however the practice was probably widespread throughout the West. Prefers full sun to part-shade with plenty of moisture.
Mountain larkspur (Delphinium glaucum) seed packets contain approximately 105 seeds per packet.
Seed Germination Instructions
90-120 days cold-moist stratification. Sow outside in fall.