Flowers

How to Plant, Grow, and Care for Wallflowers

The name wallflower probably conjures up shy schoolkids, but wallflower plants have a lot of bold personality and wonderfully fragrant flowers. Gardening expert Melissa Strauss has the low down on caring for these pretty plants.

What are Wallflowers?
Wallflower is a tough....

little plant that can grow in harsh and unforgiving situations. Its common name stems from the plant’s ability to sprout up in surprising spots. It’s not uncommon to see this little flowering plant pop up between bricks or cracks in concrete.

The Erysimum genus encompasses many species, including herbaceous perennials, annuals, and subshrubs. Some species are popular for growing in the garden, while most regard others as wildflowers. These plants are drought tolerant and low maintenance, and interestingly, they are related to broccoli!

History
Few plants rival wallflowers when it comes to garden plants that have been in cultivation for a long time. Records exist of this plant’s use in medicinal preparations as early as 70 AD. In terms of its ornamental use, this plant has been cultivated in gardens since medieval times at least, and likely much longer.

English gardeners have grown this plant in their spaces since the 1500s. by the 1700s, they made their way into gardens in the United States. The plant’s ability to grow from walls and other difficult terrain may be a reason for its longstanding popularity.

Their strong and pleasant fragrance made them a popular flower in nosegays. These small bouquets were historically held in one’s hand and used to shield the owner from offensive odors. They have a rich and storied history in folklore, symbolizing faith in adversity.

Native Area
These plants are native to at least three continents. Various species show up in Africa, Europe, and North America. They are potentially native as far south as Costa Rica. Their natural habitat is far-reaching. You will find wallflowers growing in sand dunes, alpine meadows, desert canyons, cliffsides, and prairies.

Characteristics
Wallflowers bloom in various colors from late spring to early summer.

Erysimum is a member of the brassica family, which includes cabbage and broccoli, among others. There are species that fall into the categories of annual, perennial, and sub-shrub. Their stems are erect with a fine coating of hairs. The leaves are broader toward the base of the plant and become narrower near the top.

The flowers grow in clusters at intervals along the stems. The four-petaled flowers typically appear in warm shades of yellow, red, and orange. They can also be blue, purple, or white, and they have a sweet and pleasant fragrance. The flowers bloom from late spring to early summer and are very attractive to pollinators.

Where to Buy Wallflowers
Wallflower plants are readily available at many nurseries and other plant retailers. They are hardy in Zones 3-10 and easy to care for, which makes them a very popular plant in a wide range of climates. You can also find a wide range of these plants at online retailers.

Planting
Determine planting time for your wallflower plants according to the type and climate. Growing from seed is the most common way with biennial varieties. Start your seeds 10-12 weeks ahead of your last frost date. Plant your seedlings in early fall for blooms the following spring.

Perennial wallflowers can go in the ground any time of year. Spring is ideal as it gives them a full growing season to establish roots before winter. In warm climates, you can plant your seeds in the fall, leaving them uncovered as they need light to germinate. Space your plants 10-12 inches apart in the ground or six inches apart in pots.

How to Grow
These plants are easy to care for with just a few considerations. They need protection from strong winds, for one thing. They also need proper drainage and will not thrive in wet environments with soggy soil.
Maintenance
To keep your flowers blooming and plants looking full and happy, deadheading is a must. The more you deadhead, the more flowers your plants will produce.

Fall is the time for major pruning. In warm climates, this plant can act as an evergreen. To prevent it from growing leggy and sparse, trim the entire plant back by half when it finishes flowering. In cool climates, where the foliage will die back, prune it to a few inches above the soil in the fall.