Buzz
Pruning plays a vital role in garden maintenance. Beyond controlling growth, it promotes the health of trees and shrubs by allowing light and air to penetrate all branches. Timing your pruning correctly can also enhance flowering, making it an essential skill for achieving a beautifully maintained yard.
Spring Pruning: What to Focus On
Spring is ideal for pruning many trees, shrubs, and plants, though not all garden elements should be trimmed during this season. Knowing what to prune is crucial, but there’s an exception: Dead, diseased, or damaged branches should be removed immediately, regardless of the season.
Bushes that bloom in summer
Summer-blooming bushes typically flower on new growth, making spring the perfect time for pruning before new growth begins. Examples include butterfly bush and rose of sharon.
A helpful guideline is that summer-flowering plants are those that bloom after June 15.
Vines
Perennial vines such as trumpet vine and ivy can be pruned in spring, as they flower on new growth. While ivy can be trimmed anytime, shaping it in spring before leaves emerge is most effective.
Evergreens
Evergreen trees and shrubs are divided into two pruning categories. Fir, spruce, and pine trees grow in a whorled pattern and rarely require pruning. If necessary, trimming new growth in spring or early summer can help manage their size.
Random-branching conifers, such as arborvitae and juniper, have buds along their stems, allowing cuts almost anywhere. In spring, prune individual branches back to their main stems. For overall shaping, wait until summer after the shrub has completed its growth.
Fruit trees
Fruit trees bloom in spring but are an exception to typical pruning rules. Pruning is crucial for their health, even if it means sacrificing a few buds in the process.
During spring, while the tree remains dormant, its structure is clearly visible. A healthy fruit tree features a central leader, branches at sturdy angles to support heavy fruit, and a manageable height for easy harvesting. Sunlight and airflow are essential for ripening and disease prevention, so ensure branches are well-spaced.
What to avoid pruning in spring
While pruning in spring, avoid cutting plants grown for their spring flowers. Wait until after they bloom to prune. The June 15 guideline is particularly useful here.
For instance, lilacs and forsythia should not be pruned in spring, as this removes potential flower buds. Prune them only after they have finished blooming.
Pruning techniques
Begin by identifying and removing dead, diseased, or damaged branches. These must be eliminated immediately, regardless of the season.
Next, address crossed branches. Retain the stronger or healthier one and remove the weaker to improve structure.
Eliminate water sprouts and suckers next. Water sprouts emerge from the trunk, while suckers grow from the tree's base. These fast-growing, vertical shoots drain energy without contributing to the tree's shape or fruit production.
For large branches, use a two- or three-step cutting method to prevent tearing the bark and damaging the tree.
For smaller branches, employ a thinning cut, removing the branch at its origin from a larger branch. This prevents regrowth. Alternatively, a heading cut can stimulate bushier growth by encouraging side branches or buds to develop.
When making pruning cuts, avoid applying any sealants to the wound. While intended to aid healing, these products often promote rot and disease rather than preventing them. Plants are naturally equipped to heal themselves more effectively. To minimize the need for large cuts, adopt a proactive approach by pruning smaller branches regularly instead of allowing the tree to go unpruned for years.
