How to Prune a Crab Apple Tree
Flowering crab (or crab apple) trees are a popular addition to any landscaping plan, particularly residential ones. A typically shorter height of 15 to 25 feet makes them ideal for small yards and areas under power lines. They should be pruned annually to maintain their shape, growth and health. The size of the tree will determine which recommended tools are needed; ladders and pole pruners may not be needed for very young trees. After pruning is finished, your crab apple tree should have a scaffold appearance with a main trunk or leader and branches perpendicular to the trunk. A good pruning regimen can keep your crab apple tree healthy for years to come. Does this Spark an idea?
Instructions
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Pruning
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1
Assess the shape and size of the tree. Decide what shape the tree should have such as round or pear-shaped following the pruning, to prevent over or under pruning. Trim from the ends of the branches, stepping back every so often to evaluate the progress of your shaping.
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2
Place the ladder safely under tree to reach upper sections, if necessary. Adjust the base of the ladder against something sturdy and settle the top against the trunk with sturdy branches to either side to prevent slipping. If branches are not available, the ladder can be bound in place. Pinch off new growth at the tips to control the size of the tree.
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3
Remove any dead or damaged branches with hand shears for branches under 1 inch in diameter. Use lopping shears or pruning saw for larger diameter branches.
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4
Snip any branches that cross over one another or rub against each other. Use the pole pruners for parts of the tree you cannot reach safely from the ladder. Lift he pole pruner to the desired branch, positioning jaws around the branch to be cut. Pull down on the rope which causes the jaws to close and cut the branch.
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5
Cut cleanly leaving no stub. Do not leave jagged or stepped cuts which allow insects and disease to gain access to the tree. Smooth out ends by cutting away any jagged edges with the saw. Leave collars of branches in tact as a cut to close to the trunk can damage the tree.
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6
Evaluate the tree from 10 to 15 feet away to discern if branches have approximately 2 feet of vertical space between them to permit adequate sunlight penetration and air circulation to lower limbs. Make any "heading back" or trimming cuts about 1/4-inch above a bud or lateral branch.
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Tips & Warnings
For best results, prune crab apple after they have bloomed but before the first of June. Buds are developed the previous season. Pruning them in winter or early spring will remove the buds and, therefore, the flowers.
Cuts or wounds do not need to be sealed. This can actually prolong callousing or healing which can give pests and disease an opportunity to attack the tree.
Use caution when using a ladder especially when working with tools. Make sure the ladder is securely positioned and stable. It may be necessary to have a second person hold the ladder for additional support.
