Deadheading spent dahlia flowers is the key to a continuous display of brightly coloured blooms, as the plant redirects energy from seed production to new buds and flowers. This simple task ensures the late summer garden remains vibrant with wave after wave of flowers.
Why deadheading is vital
Dahlias are relentless bloomers, with buds and flowers coming one after another until the first frost of autumn. However, spent flowers can cause the plant to waste energy on producing seed. By snipping off these faded blooms, gardeners encourage the plant to put that energy into new buds and flowers instead.
Regular deadheading is essential to maintain a healthy and vibrant display. The difference between fed and unfed dahlias is noticeable to the gardening eye, with foliage and flowers appearing more vivid when properly cared for.
Support and feeding essentials
In addition to deadheading, dahlias need physical support to prevent stems from drooping. The most effective method is to place canes around the plant and tie twine between them to hold the stems upright. Once supported, the flowers stand more upright and are easier to see.
Dahlias are hungry and thirsty plants, so a weekly feed with a dedicated dahlia feed will encourage more flowers. Regular watering is also important to keep the plants healthy and vibrant throughout the summer.
For those looking to order dahlias and feed, a promo code is available at Thompson & Morgan for 12% off orders over £20. More seasonal gardening advice is shared on social media by the author.
