Daffodils are a common perennial in flower gardens. These flowers are disc shaped and they center is black and it is surrounded by yellow petals. These perennials can grow to be about 1 to 2 feet tall and equally as wide. Daffodils grow best when they have full to partial sunlight, and they like moist well drained soils. Just be sure not to plant these where water commonly stands from rain. These perennials are native so they are more hardy than other perennials and they will re-seed themselves year after year so they will grow in thicker and thicker each year.