The Garden Guru has received many questions this week about when and how to prune Hydrangeas….
Hydrangea microphylla, both mophead and lacecaps, should be pruned in late summer/early fall right after the flowers have faded. The buds for next year’s blossoms are formed in October. If a hydrangea produces no flowers, it is probably that it was pruned too late in the year. Prune stems back to the first or second pair of fat buds below the finished flower. This can be as little as 4”. It is not necessary to prune farther back unless you want to reduce the height of the shrub. Remove canes that are thinner than a pencil to encourage larger blooms on remaining canes. Remove all small, twiggy growth and dead wood.