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How to stop new growth on tree trunk?

Published in Tree Care 3 mins read

Stopping new growth, often called suckers or waterspouts, on a tree trunk involves specific pruning techniques aimed at removing these unwanted shoots.

These growths are common and can arise from the root system or dormant buds along the trunk or branches, often in response to stress or injury. While pruning can temporarily remove them, a more effective approach for lasting results often targets the source.

Methods to Stop Trunk Growth (Suckers)

Dealing with suckers on a tree trunk requires more than just lopping them off. For a longer-lasting solution, you need to address the issue close to its origin.

Here are the primary methods:

1. Pruning (Temporary Solution)

  • What it is: Cutting the suckers off cleanly where they emerge from the trunk or root flare.
  • Why it's used: This is a quick way to maintain the tree's appearance and remove unsightly growth.
  • Limitation: Pruning alone often stimulates the growth of more suckers from dormant buds.

2. Trimming and Pulling (More Lasting Solution)

Based on the provided reference:

Pruning is a great solution to maintain your tree's appearance and temporarily stop sucker growth. If you want to stop tree suckers' growth for longer, you need to trim them and then pull tree suckers out of the roots with leather gloves.

  • Step 1: Trim: Cut the sucker back to a manageable length, making it easier to grip.
  • Step 2: Pull from the Root/Trunk: Grip the base of the trimmed sucker firmly (using leather gloves to protect your hands) and pull it away from the trunk or root system. The goal is to pull out the basal buds from which the sucker is growing.
  • Why it works better: Pulling can remove the growing point (bud) at the origin, making it less likely for new growth to emerge from the exact same spot.

Summary of Methods

Method Description Duration of Effect Tools Recommended
Pruning Cutting the sucker off cleanly. Temporary Pruning shears, loppers
Trimming & Pulling Trim back, then pull base firmly from origin. Longer-lasting Pruning shears, leather gloves

Best Practices

  • Timing: Remove suckers as soon as you notice them while they are still young and tender. This makes them easier to pull and causes less damage to the tree.
  • Clean Cuts: If you are only pruning, use sharp tools to make clean cuts close to the trunk or parent branch collar without cutting into the trunk itself.
  • Protective Gear: Always use leather gloves when pulling suckers to avoid blisters or scratches.
  • Address the Cause: Persistent suckering can sometimes indicate tree stress (like improper watering, pests, disease, or root damage). While removing suckers helps, addressing the underlying stress factor is crucial for long-term tree health.

Removing suckers effectively helps maintain the tree's structure, vigor, and appearance, channeling its energy towards desirable growth.

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