An herbaceous or semi-woody, ever-blooming species, primrose willow flaunts bright-yellow blossoms ... they are shallow-rooted plants that require moist soil and frequent, light fertilization.

The fragrant yellow flowers of evening primrose (Oenothera biennis ... on small trees or woody ornamental plants such as hydrangea can also provide soft light in a moon garden.

yellow, purple bicolor and white. Bloom time: February through May. Culture: Purchase a healthy plant in bloom with numerous buds. Place in bright, indirect light with cool temperatures to ...

Primrose flowers grow from a rosette of long, narrow leaves. The color range is immense — from a sky color to midnight blue, pinks, reds of all hues, yellow, orange, and lavender. Many of them ...

Other names include golden candlestick, hogweed, night willow herb, and fever plant. The evening primrose name describes how the yellow flowers close during the daytime. (Photo credit: Getty ...

Size: It will grow up to 9 inches tall and spread to 2 feet wide. Where: This primrose grows best in open to light shade and protected from hot afternoon sun. Grow it in rich moist to well-drained ...