Yes, Nerium oleander. They are spectacular and very hardy in the right climate. If it's yours, while they respond well to a hard prune every couple of years, all parts of the tree are poisonous so care should be taken when handling cuttings - gloves and eye protection. Prunings should be bagged not burned.

Hi Everyone! I really appreciate all your help. And from what I remember, you have all identified the flowers correctly. 1. I will check if it's a Rudbeckia Fulgida once the flowers bloom. I don't know when, unfortunately. But it is definitely a Rudbeckia. 2. I think this is a Bride Clematis based on the colors? 3. I looked up Hyachinth and those are it! I forgot the colors though :( 4. I will post pictures when they have flowers but they look like Cala Lillies. You are all amazing at what you do. Thank you and these postings have definitely made me appreciate the plant world even more. It's absolutely fascinating! Unfortunately, I think I have some plants that might not be native in my area. Luckily, nothing my daughter is allergic to! Thank you AGAIN!

Compare it to: viburnum 'cardinal candy' I'm not 100% sure but it looks very similar and I can't think of what else your shrub would be. If that's really what it is, a hedge in a more natural shape could be beautiful! I had one of these at a previous house and it grew quite large, tons of flowers in spring and red berries in summer.

Somebody told me it is Schefflera delavayi (Delavay's Schefflera). Thanks!