Gardeners in the UK with dahlias are being urged to pinch out the growing tips of their plants now to ensure a spectacular display of colour that can last for months, according to experts at Garden News Magazine. The colourful flowers are a favourite among UK gardeners thanks to their bright blooms and long flowering period, and with the right care, they can continue producing blooms right through until autumn.
Why Pinching Out Is Essential
Unlike many summer plants that only flower for a few weeks, dahlias can bloom for months, continuing to flower until the first autumn frosts arrive and blacken the foliage. However, getting the best display is not always as simple as putting them in the ground and leaving them alone. The gardening specialists explained that the plants thrive in warm, sunny spots with rich soil that can hold moisture and nutrients.
One of the most important jobs gardeners can do is pinch out the growing tips once the plants have become established. This simple task encourages dahlias to grow into bushier plants and produce more flowers over a much longer period. The experts say that by doing so, gardeners can enjoy months of vibrant colour.
Soil Preparation and Planting
Before planting, gardeners are advised to improve the soil with garden compost, well-rotted manure or old compost from spring containers. Doing so helps the soil retain moisture and nutrients, both of which dahlias need to grow strongly. After planting, a general fertiliser can be scattered around the plants before watering thoroughly.
Those growing dahlias in pots should use a multi-purpose compost and feed regularly throughout the season. Young plants also need protection from slugs and snails, which can quickly damage fresh growth.
Support and Watering
On top of that, the experts explained that tall varieties may need additional support as they grow. A few canes placed around the plant and secured with garden twine are often enough to stop stems from being damaged by wind. The experts also recommend watering thoroughly during dry spells as dahlias are thirsty plants. Adding a layer of mulch after planting can also help lock moisture into the soil while providing extra nutrients.
Pollinator Benefits
Dahlias are also popular with pollinators, with bees particularly attracted to single-flowered varieties. Many gardeners choose them to brighten up borders, while others grow them for cut flowers to bring indoors. By following these expert tips, gardeners can ensure their dahlias perform at their best throughout the summer and into autumn.
