Erysimum, commonly known as Wallflower, is a genus of flowering plants that belongs to the Brassicaceae family. Depending on the species and climate, Wallflowers can be grown as annuals, biennials, or perennials. Wallflowers are prized for their showy flowers and easy-to-grow nature.
Preferred Growing Conditions
Erysimum is a sun-loving plant that flourishes in full sun or light shade. Place it in a spot that receives at least six hours of sunlight per day. Erysimum thrives in moderately fertile soil with a slightly alkaline to neutral pH. Adding organic matter like compost can enhance soil structure and nutrient availability. Regular watering during its establishment phase is crucial for healthy root development, but once established, Erysimum is relatively drought-tolerant.
Leaves and Flowers
Wallflower leaves are typically lance-shaped or linear, forming compact rosettes near the ground. Their colors span a spectrum from vibrant green to grayish-blue, and some varieties boast variegated patterns. The flowers are usually small, but they grow in large clusters that can create a stunning display. Characterized by their four-petaled arrangement, these blossoms vary from soft pastels to bold, fiery oranges and reds. Their delicate appearance belies their tough nature; these blooms endure even in challenging conditions, earning the wallflower its reputation as a symbol of endurance and fidelity. The shape of the flowers is also quite distinctive, with four petals arranged in a cross shape.
Uses in the Garden
Erysimum’s compact growth habit makes it an excellent choice for defining borders and edges in flower beds. The rich colors of its flowers can create a captivating frame that transitions smoothly between different plant varieties. In addition, Erysimum’s resilience and ability to thrive in well-drained, rocky soils make it a natural fit for rock gardens.
Erysimum can thrive in containers and pots for those with limited garden space. Mix and match different cultivars to create stunning arrangements that bring color and fragrance to balconies, patios, and other small spaces. The wallflower’s blossoms can also enhance outdoor spaces and make exquisite cut flowers for indoor arrangements. Their unique form and vibrant colors add a touch of elegance to any vase.
In the Upstate, Erysimum tend to become available in the fall … don’t ask us why. OK, so let us tell you why … they bloom throughout the winter in milder climates such as along the coast. So absent another 10F winter, they may bloom in the Upstate in the spring (because we don’t live on the coast, but our vendor who sells wallflowers does. At Martin Garden Center, we tend to have a very limited selection in the fall so get them when you can or miss out.