British gardeners are being warned to complete a crucial task before the end of the week, or risk facing an unruly and less productive garden going forward. Experts are urging homeowners to prioritise summer pruning of popular plants such as wisteria, lavender, and rambling roses, noting that failing to trim these now could result in poor flowering next year, excessive growth, and even long-term damage.
“Maintaining a healthy, vibrant garden isn’t just about watering and weeding,” said a spokesperson from the Royal Horticultural Society (RHS). “Timely pruning, especially in late summer, plays a vital role in plant health and flowering success.”
Wisteria, known for its sprawling vines and stunning purple blooms, needs to be pruned twice annually. The RHS recommends cutting back the current season’s long, whippy shoots to about five or six leaves by early August.
This not only helps keep the vigorous climber under control, but also improves light penetration and air circulation, encouraging the formation of next year’s flower buds.
Lavender also demands attention this week.
Michael, a gardening expert known as @themediterraneangardener on TikTok, warns against cutting into old wood but says now is the perfect time to shape and tidy up the plant.
“It will put on a little more growth before winter, which helps protect it, and come spring, it’ll be in prime shape to flower beautifully.”
Meanwhile, rambling roses must be pruned after flowering, ideally before the end of summer.
The RHS advises removing around a third of the oldest stems entirely and tying in new growth to avoid tangling and overcrowding.
In smaller gardens, all flowered stems may be pruned out completely to maintain shape and encourage fresh growth.
Whether you’re a seasoned gardener or just keeping your outdoor space tidy, completing this seasonal task before the weekend could make all the difference.
“Neglecting to prune now won’t just lead to a messier garden,” experts say. “It could mean fewer flowers and more hassle next year.”
