Monty Don has advised gardeners to trim hedges this month, highlighting that August is the optimal time for this task. The gardening expert notes that the risk of disturbing nesting birds has significantly decreased, making it safe to proceed.
Safe and beneficial timing
On his website, the Gardeners' World host stated: "It is safe now to trim hedges in the knowledge that the vast majority of nesting birds have fledged." While it remains wise to check for active nests, August is broadly considered one of the best periods for the yearly summer trim.
Pruning in summer results in "slower, less vigorous regrowth" compared to winter, meaning hedges maintain their shape longer. This contrasts with winter trimming, which leads to rapid growth that can encroach on paths and windows.
Technique and disposal tips
Monty advises starting with the sides, ensuring the hedge tapers slightly outwards from top to bottom to allow sunlight to reach lower branches. He added: "Finally, cut the top, using a string strung between canes as a guide."
Clippings from deciduous hedges can be composted, while evergreen trimmings should be disposed of via local green waste services.
Additional benefits and caution
Summer trimming stimulates fuller, more compact growth and reduces fungal issues. However, avoid heavy pruning during extreme heat or drought to prevent plant stress.
For those seeking a next project, Monty suggests tackling long grass or wildflower meadows in August, allowing flowers to seed and bulbs like daffodils and crocuses to complete their lifecycle.
