I hope someone can help identify these trees. These are all taken
today 3/15/2017 in OKC area, so, early spring. I'm planning some new
landscaping for the home.

1. Doesn't look like flowers, but it's all pink as you can see.

2.Thorny leaves that stays green all through winter

3. Flowers that will turn to red-dish leaves before turning it to green.

Thank you.