erect perennial with firm, square stems, which from the beginning of august form mathematically regular, also 4-row, up to 20 cm h

also aster asters august background beautiful beauty beginning bloom blooming blossom botany color colorful decorative dragon drawing ears erect firm flora flower flowerbed flowers form fresh garden gardening grass green head herb high lamiaceae lilac long macro mathematically natural nature october park perennial physostegia pink plant purple regular rosea soft spring square stems summer throat violet virginiana vivid which white