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Fire-resistant plants are not noncombustible
A plant this site rates fire-resistant can still burn. Fire-resistant here is a derived evidence class — the balance of published verdicts, computed by a public rule — not a lab property. Noncombustible is ASTM E136. Zone 0 is not a planting list. Oregon R327 does not pick shrubs.
You are at the nursery holding a tag that says fire-wise. The five-foot band is still gravel. The plant, if you use it, goes farther out, spaced, and watered.
ZON-001 lives on zone bands. ZON-021 is the plant-card template, not a species. Do not bulk-promote the catalog on this page.
Why it matters
People hear fire-resistant and plant juniper at the foundation. That is the opposite of IBHS Base. Embers ignite plants that are not E136. Spacing is a different job. See crown and shrub spacing and ladder fuels.
How the words split
| Word | What it is | What it is not |
|---|---|---|
| Fire-resistant plant | On-list from PNW 590 and other public sources we recorded | ASTM E136 |
| Avoid | Public-list avoid, including some junipers | A criminal ban |
| Zone 0 | Inorganic ground. No plants | A palette of succulents |
| R327 | Construction | A planting code |
The paths
1. Five feet. No plants if you are scoring IBHS. Hardscape. See Zone 0.
2. Farther out. Use the plants index. Read the record. Space it. Do not put it under a tree.
3. Oregon construction. R327 still does not care which shrub you bought.
What people mix up
- On-list as Zone 0.
- Fire-resistant as noncombustible.
- One rosemary argument as a site-wide rule.
How to check
- Measure five feet. If a plant is in it, you are not on IBHS Base.
- Open the plant record, not a blog.
- Name the document.
Limits
This page does not reprint 161 plant cards. FireApproved is not a landscape architect. Do not scrape Exhibit F.
Related records
Questions
If FireApproved rates a plant fire-resistant, can I put it in Zone 0?
No. Zone 0 is not a planting list. IBHS Base removes vegetation in the first five feet to mineral soil. A fire-resistant rating is a Zone 1 or Zone 2 conversation, and the plant can still burn.
Does fire-resistant mean noncombustible?
No. Noncombustible is ASTM E136. Fire-resistant on this site means the plant appears on named public lists with the recommendation we recorded. It is not an E136 pass and not R327.
Is rosemary a mix-up?
Some public lists disagree on a few species. Use the plant record. Do not upgrade a shrub into Zone 0 because a blog called it fire-safe.