What is a Tree’s Critical Root Zone?

Taking care of your landscaping trees requires more than personal effort; it requires a little knowledge and understanding, too. A fundamental part of learning about tree care is knowing a tree’s critical root zone. A critical root zone, or CRZ, is essentially an imaginary boundary surrounding the base of a tree. Although the perimeter is imaginary, the meaning and importance is very real.

Measuring CRZ

Indianapolis Tree Care 317-590-1842

Indianapolis Tree Care 317-590-1842

The imaginary boundary mentioned above should start at the drip line of a tree. This is where the water drips from the borders of the tree’s canopy. Imagine an open umbrella with water pouring on top. The circle of water created around the umbrella is similar to a tree’s drip line. For thinner trees, it is best to imagine the dripline a little farther out just to be sure all roots are taken into account.

Rather than locating (or guessing) a tree’s dripline, you can simply measure it yourself by hand. To measure your tree’s CRZ, start with some simple math. Measure the diameter of the tree trunk, and then multiply that number by 1.5. Here is an example:

Tree Trunk Diameter = 24 inches
Critical Root Zone = 1.5 ft2
MATH: 24 x 1.5 = 36
CRZ Radius = 36 feet

When measuring your tree trunk, start at an area that is 5 feet from the base. This is a more accurate measurement of the trunk diameter. Another way to find the tree trunk diameter is to measure the circumference of the tree trunk and multiply it by 3.14 (pi). Here is an example:

Trunk Circumference = 76.36 feet
Critical Root Zone = 1.5 ft2
MATH: 75.36/3.14 = 24
Tree Trunk Diameter = 24 inches

Indianapolis Tree Service

Budget Tree Care

Budget Tree Care 317-590-1842

Call Budget Tree Care at 317-590-1842 for professional and affordable Indianapolis tree service. We are experienced tree care contractors who provide residential and commercial tree services, including both routine and major tree work. As out company name suggests, we have the tree service solutions that will fit your BUDGET! Call 317-590-1842 to request a free estimate, today.

About Curt S.

Budget Tree Care is locally owned and operated here in Indianapolis, Indiana by Curtis Scott. After graduating from Manuel High School on Indy’s South side in the late 70’s, Curt began his tree service career with his older brothers who owned Timberland Tree Care and Midwest Tree Care. After many years of doing ground work (clean up and tree trimming) for them; and after both of them decided to retire, Curt opened up his own tree service business in 1991. Today, curt and his seven man crew trim trees, remove stumps, and provide lot clearing services all throughout the Indianapolis Metro area. On Curt’s free time he enjoys drag racing motorcycles, hunting deer in the fall, and fishing for bass and catfish in the summer. If you are looking for a born and raised Hoosier who has been trimming trees for over 30 years and understands the value of hard work, please give Curt a call at 317-590-1842 today.
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