Aurinia, also known as goldentuft alyssum, basket of gold, and rock madwort, is a genus of small, low-growing perennial flowers native to central and southeastern Europe. It is a member of the cabbage family, and bears small yellow flowers during mid-to-late spring and early summer. Aurinia is a fairly hardy plant that is susceptible to few diseases and insects. It is commonly used in rock gardens and as edging in flower gardens, and can also be planted with other flowers in container gardens.
During April, May, June, and July, Aurinia plants produce small, delicate four-petal flowers in yellow, cream, lemon, white, or gold. Typically, these plants are between 4 and 12 inches tall (10.16 and 30.48 cm), with a mound-shaped spread of 16 to 24 inches (40.64 to 60.96 cm) wide. The stiff, oblong foliage growing from its base can be up to 5 inches (12.7 cm) long; the stem leaves are smaller. Year round, the leaves remain a gray-green color. During peak blooming, the stem is nearly entirely covered by the abundant flowers.
Aurinia grows best in United States Department of Agriculture hardiness zones three through ten. It prefers well-drained, average soil that contains plenty of chalk, sand, or grit, and an acidic-to-neutral pH level. It requires full sun exposure.
In areas with hot weather, afternoon shade is necessary. It does not do well in hot, humid climates. Gardeners in hotter climates tend to treat this perennial plant as an annual, and replant it every year. At the end of the growing season, once the seeds have dried, they can be collected for future use.
Aurinia is susceptible mainly to aphids and root rot; it is fairly resistant to other insects and common diseases. Aphids can be eradicated with an insecticidal soap made for this type of plant. Overwatering or poorly drained soil will cause the roots to rot. This can be prevented by giving the plant the proper amount of water and making sure that it is planted in soil that drains well.
Plants in this genus are commonly used as a ground cover throughout the world. They grow very well in rock gardens, or as a cascade over a rock wall. On hillsides where erosion is a problem, this plant may help prevent that erosion, in addition to making the landscape more attractive. When planted in containers, it is often used as a border plant and allowed to grow over the edges of the container. Aurinia attracts a variety of birds, butterflies, and bees.