Yazoo Clay and Your Trees: What Jackson Homeowners Should Know

If you own property in the Jackson area, you have probably heard about Yazoo clay cracking foundations and driveways. The same soil quietly works against your trees, and it is a big reason so many of them end up leaning or coming down.

What Yazoo clay is

Yazoo clay is an expansive, "shrink-swell" clay that runs under much of the Jackson metro across Hinds, Rankin, and Madison counties. When it gets wet it swells. When it dries out in summer it shrinks and cracks. That constant movement is hard on anything anchored in it, including tree roots.

How it affects your trees

• Unstable root anchoring. As the clay heaves and shrinks, the soil grip on a tree’s roots loosens over time.
• Leaning trees. A tree that was straight for years can start to lean as the ground shifts beneath it, especially after a wet stretch followed by drought.
• Shallow, compromised roots. Dense clay drains poorly, so roots often stay shallow, which gives the tree less to hold onto in high wind.
• Storm vulnerability. Combine loose clay anchoring with a tall Mississippi pine and a summer thunderstorm, and you get the uprooted and toppled trees we clear every storm season.

Warning signs a tree is becoming a hazard

• A lean that is new, or getting worse
• Soil heaving, cracking, or lifting on one side of the trunk base
• Exposed or raised roots that used to be underground
• Large dead limbs, or a thinning canopy on one side
• Cracks in the trunk or major branches

If you see these, especially on a large tree near the house, do not wait for the next storm to decide for you.

What to do about it

A couple of moves reduce the risk. Trimming and crown thinning lowers the "sail" a tree presents to the wind, so a healthy tree is less likely to come down. For a tree that is already leaning or structurally compromised, removal is usually the safer call, ideally before storm season rather than during it. And if a tree has already failed, we offer fast emergency response across the metro.

Not sure where your trees stand? We will take a look and give you a free, written estimate. Find your area on our service areas page.