noun. any plant of the genus Delphinium having palmately divided leaves and showy spikes of variously colored spurred flowers; some contain extremely poisonous substances.
- genus Delphinium
Sentences with delphinium
1. Noun, singular or mass
To deadhead delphinium, use your fingernails or garden pruners to remove the spent bloom and stem down to the point where you see a new bud, flower or leaf.