The colour purple comprises two primary colours, blue and red. It is associated throughout the ages with royalty, wisdom, ...

Queen Anne's lace has a small purple flower in the center of the cluster of blooms, while all blooms are white on poison hemlock. Two more differences can be noted on the stems.

Shiny leaves and purple flowers led to the plants’ popularity as an ornamental, and the plant spread from its native Madagascar to Hawaii, Australia, the Caribbean, East Africa and India.