flowers for fjb

Fjb asked me about a shrub in one of my previous post's comments. I am sorry I can't tell you the name of the plant. I think I knew it once, but I can't remember it. It is quite beautiful, grows very tall, and blooms a lot. But I was told it's leaves are very poisonous. It doesn't need much water and it's often planted along roadsides. We generally use it as a backdrop for family pictures, because it blooms so much.