---
title: Root Plate: The Anchor Under the Tree
url: https://battleborntreeservice.com/glossary/root-plate/
business: Battle Born Tree Service
address: 6301 US Highway 50 East, Carson City, NV 89701
phone: 775.232.8243
hours: Office Monday-Friday 8:30 am-5:00 pm; phones answered seven days a week; 24-hour emergency service
credentials: ISA Certified Arborist WE-11728A on staff; Nevada Business License # 20131580674; fully insured
type: Tree service (removal, crane work, pruning, stump grinding, defensible space, snow removal, firewood)
---

- [Home](https://battleborntreeservice.com/)
- [Arborist glossary](https://battleborntreeservice.com/glossary/)
- Root plate

# What is the root plate?

The root plate is the area of roots and soil around the base of a tree, extending out from the trunk, that anchors it. It is the part that lifts out of the ground when a tree is blown over.

## What it is and how it holds

A tree's anchorage is not a tap root, as people often think, but a wide, shallow plate of structural roots and the soil bound between them, a disc rather than an anchor. When wind pushes the crown, the plate resists on the downwind side by its weight and the strength of its roots, and on the upwind side the roots pull. If roots are cut, rotted or constricted, or the soil is saturated, the plate can tilt or lift.

The size of the plate depends on the species, the soil and the space, and its edges are not the drip line. See [structural root zone](https://battleborntreeservice.com/glossary/structural-root-zone/).

## Why it matters in Northern Nevada

Trees on irrigated lawns, on filled lots, near trenches, or beside a basement dig lose part of their plate. Add a wet winter and a Zephyr gust and the tree may go over. Signs to check include soil heaving on one side, cracks in the lawn or paving radiating from the base, and a trunk that has begun to lean. See [windthrow](https://battleborntreeservice.com/glossary/windthrow/) and [root heave](https://battleborntreeservice.com/glossary/root-heave/).

If you see lifting soil on a tree near a house, treat it as urgent and keep people away.

## What an arborist does about it

The arborist looks at the soil around the base, the condition of the [root flare](https://battleborntreeservice.com/glossary/root-flare/), the evidence of cut or decayed roots, the lean and the crown's weight, and decides whether the tree can be supported, lightened or must be removed. A tree that is lifting is not a pruning job. The right step is to call; we answer seven days a week, and the 24-hour emergency line is [775.232.8243](tel:775.232.8243). If anyone is hurt, call 911 first.

### Sources

- [International Society of Arboriculture, Trees Are Good: Recognizing Tree Risk (brochure)](https://www.treesaregood.org/Portals/0/TreesAreGood_Recognizing%20Tree%20Risk_0721.pdf) (read October 17, 2026)

### Talk to the office

[775.232.8243](tel:775.232.8243)

| Monday to Friday | 8:30 am - 5:00 pm |
|---|---|
| Saturday and Sunday | Office closed, phones answered |

Phones answered seven days a week. 24-hour emergency service.

[Free estimate](#quote)

### Keep reading

- [Arborist glossary](https://battleborntreeservice.com/glossary/)
- [Tree leaning toward the house: what to check](https://battleborntreeservice.com/guides/tree-leaning-toward-house/)
- [Washoe Zephyr and downslope winds: preparing your trees](https://battleborntreeservice.com/guides/washoe-zephyr-wind-tree-prep/)
- [Emergency tree service and storm clean-up](https://battleborntreeservice.com/tree-services/emergency-tree-service/)

## See also

[Windthrow](https://battleborntreeservice.com/glossary/windthrow/) [Root heave](https://battleborntreeservice.com/glossary/root-heave/) [Root flare](https://battleborntreeservice.com/glossary/root-flare/) [Structural root zone](https://battleborntreeservice.com/glossary/structural-root-zone/)