It is difficult without knowing where the site is and from this distance, so these are suggestions for you to look up. The foreground may be Mugo Pine, possibly Himalayan Clump Birch that are the staked trees, possibly a type of Fountain Grass by the glass foyer (maybe “Little Bunny”), and maybe a type of Maiden Grass on the other side of the pool. Could be Rugosa Roses on the left side. I’m not saying that these are correct. I’m suggesting that you could start with these suggestions and make comparisons to get you on the right track.