Trim box in April
Hi All, hope you are staying safe and well. A question please: I have mature low common box hedge and pyramids. I didn’t trim last year due to a mix of weather and a neighbour having an outbreak of Box blight. So it’s now looking very loose. Once the current bout of frost has passed, could I trim it this month (April) even if only lightly? All the books and websites say May of course but is there any risk bringing it forward and trimming again later in the season?