Should alyssum be deadheaded?

Answered by Tom Adger

Deadheading sweet alyssum can definitely benefit the overall health and appearance of the plants. Deadheading refers to the process of removing spent or faded flowers from a plant. By doing so, you are encouraging the plant to continue producing new blooms and preventing it from expending energy on seed production.

When it comes to sweet alyssum, deadheading is particularly effective in keeping the plants flowering and encouraging them to set new buds quickly. This is because sweet alyssum has the ability to continuously produce flowers throughout the growing season, but the process of deadheading helps to prolong and enhance this blooming period.

To deadhead sweet alyssum, simply pinch or snip off the faded flowers just above a leaf node or bud. This will redirect the plant’s energy towards producing new blooms rather than producing seeds. Deadheading should be done regularly, ideally as soon as the flowers begin to fade.

However, if you have a significant drift of sweet alyssum plants, deadheading can be a time-consuming task. In such cases, shearing the plants by one-third can be a more efficient option. This involves using shears or hedge trimmers to cut back the plants to about one-third of their height. This will remove the spent flowers and encourage the plants to produce fresh growth and new buds.

It’s worth noting that some varieties of sweet alyssum will readily re-seed themselves. This means that if you allow the plants to go to seed, they may produce new plants the following year without any effort on your part. However, if you prefer to have more control over the size and placement of your sweet alyssum plants, it’s best to deadhead or shear them to prevent excessive self-seeding.

In my personal experience, deadheading sweet alyssum has always resulted in healthier and more prolific blooming. By regularly removing the faded flowers, I have noticed that the plants stay compact and bushy, with plenty of vibrant blooms throughout the season. It also helps to prevent the plants from becoming leggy or straggly.

Deadheading sweet alyssum is a beneficial practice that can keep the plants flowering and encourage the production of new buds. Whether you choose to deadhead individual flowers or shear the plants, this simple maintenance task can greatly enhance the overall appearance and longevity of your sweet alyssum plants.