The answer to 'best time for hedge' is that the best time to trim or prune a hedge is typically in late winter or early spring, before new growth emerges. This is the dormant season for most hedge plants, so trimming them at this time will encourage healthy, dense growth in the upcoming growing season.
Pruning in late winter or early spring also helps maintain the desired shape and size of the hedge. It's important to avoid trimming hedges during the peak of summer, as this can stress the plants and lead to discoloration or die-back. Additionally, trimming in the fall can stimulate new growth that may not have time to harden off before the first frost, potentially causing damage to the hedge.