Tree Roots Are Shallower and Wider Than People Think
A root anchors a plant and takes up water. Its shape is nothing like the tree above.
A root is the part of a plant that anchors it and absorbs water, and by extension an origin or a base form of a word. The usual picture of a deep mirror-image of the branches is wrong: most tree roots sit in the top sixty centimetres of soil, where oxygen is, and spread far wider than the canopy — often two or three times the crown's radius. A tree is more like a wine glass on a dinner plate than a mirrored pair. *Root* is Old Norse *rot*, and the unrelated verb *root* for a pig means to dig with the snout.
- A plant's anchor. *Tree roots.*
- An origin. *The root of the problem.*
- A word's base. *A Latin root.*
- To dig with the snout. *Rooting about.*
- Old Norse — *rot*. *The source.*
Word forms
| Form | Word | Example |
|---|---|---|
| Noun | root | A root. |
| Plural | roots | Roots. |
| Verb | root | Rooting. |
| Adjective | rooted | Deeply rooted. |
| Latin | radix | A root. |
- The roots spread wide.Plant.
- The root of the problem.Origin.
- A Latin root.Language.
What roots actually do
- Absorb water mainly through fine root hairs near the tips
- Anchor the plant against wind and gravity
- Store energy in many species, as in carrots and beets
- Need oxygen, which is why most stay near the surface
- Partner with fungi in mycorrhizal networks to extend reach
Old Norse *rot*, related to Latin *radix* and English *wort*.
Do tree roots mirror the branches?
No. Most sit in the top sixty centimetres of soil and spread two or three times wider than the crown.
Why do roots stay near the surface?
Because they need oxygen, which is scarce deeper down in most soils.