The color blue aids relaxation, which makes it a great choice for the flowering plants in your yard. Here are 11 trees and ...

If you live in a colder climate and love ... colder temps and produces flowers with pretty blue spikes around the same time as a jacaranda tree. It also grows half as large—only about 25 feet ...

The live oak has nourished and protected the continent’s inhabitants for many centuries. Beginning in pre-Columbian America, Native peoples have ground the tree ... which are blue on top ...