Choosing the right size tree collar can make a big difference in protecting your young trees. A collar that's too small won't offer adequate protection, while one that's too large can be ineffective or even damage the tree. This guide will walk you through determining the correct size for your tree collar needs.
Measuring Your Tree Trunk for the Perfect Fit
The most crucial step is accurately measuring your tree's trunk. Here's how to do it correctly:
1. Measure the Circumference:
- Use a flexible measuring tape: A fabric or flexible plastic tape measure is ideal. Avoid using a rigid metal tape measure as it can be difficult to get an accurate reading around a curved surface.
- Measure at the base: Measure the circumference of the tree trunk just above the soil line. This is the point where the collar will sit. Make sure the tape measure is snug but not so tight that it constricts the tree.
- Record the measurement: Write down the measurement in inches or centimeters, depending on your preferred units.
2. Understanding Size Charts:
Most tree collar manufacturers provide size charts based on trunk circumference. These charts usually correlate the circumference measurement to a specific collar size (e.g., small, medium, large, or numbered sizes). Carefully refer to the manufacturer's size chart for the most accurate fit. Sizes can vary depending on the brand and the collar's design.
3. Consider Tree Growth:
While you're measuring, think ahead! Trees grow, so consider purchasing a collar with a slightly larger diameter than your current measurement to allow for growth over the next season or two. This prevents you from having to replace the collar too soon. However, avoid selecting a collar that's excessively large, as it could become loose and ineffective.
Types of Tree Collars and Their Sizing:
Different types of tree collars might have slightly different sizing conventions. Here are some common types:
- Plastic Tree Collars: These are often available in a range of standard sizes, typically based on trunk circumference. Refer to the manufacturer’s sizing guide meticulously.
- Metal Tree Collars: Similar to plastic collars, metal collars come in various sizes, but the sizing might be less standardized than plastic collars. Always check the manufacturer's instructions.
- Fabric Tree Guards: These are often described by height and diameter. While height relates to the height of the protection, diameter is crucial for fitting around the tree trunk. Use your measured circumference to choose the correct diameter.
What to do if you're unsure?
If you're still unsure which size to choose, contact the manufacturer directly or visit a garden center. They can often provide guidance based on your tree type and trunk measurement. Remember, it is always better to err on the side of slightly larger rather than too small, to ensure adequate protection for your tree.
Beyond Size: Choosing the Right Tree Collar
Selecting the correct size is just one aspect. Consider these factors too:
- Material: Choose durable, weather-resistant materials to ensure longevity.
- Height: The collar should be tall enough to protect the trunk from various threats.
- Ventilation: Ensure sufficient ventilation to prevent moisture buildup, which can harm the tree.
- Installation: Check the manufacturer's instructions for proper installation to maximize effectiveness.
By carefully following these steps, you'll be well-equipped to select the perfectly sized tree collar to safeguard your valuable young trees. Remember, a properly fitted tree collar is essential for healthy growth and long-term tree survival.
