Apple
Malus sylvestris
Your local evidence lens
Separate evidence questions, never one approval badge
A genus split is not a placement verdict. Set a ZIP to read the local documented split.
1. Fire evidence and conditions
- Fire evidence
- Mixed evidence — location does not change the cited classification.
- Fire-performance conditions
- 1 condition stated in cited fire-evidence rows.
- Fire ecology context
- No section-reviewed fire-ecology context is normalized.
- Placement evidence
- 1 source placement record; source schemes remain separate.
- Evidence regions
- Global; eastern US; north-eastern and mid-Atlantic United States
- Maintenance
- No sourced horticultural maintenance assertion is normalized; fire-test conditions do not supply maintenance advice.
Typed publication scope: 1 scope across 1 cited fire source
2. Why this plant is relevant here
- State distribution
- Documented in CT, DC, DE, MD, NJ, NY, OH, PA, UT, WV.
- Native range
- No current cited or legacy state native range is normalized.
- Introduced / established
- No introduced or established row is normalized; that does not prove native status.
- USDA hardiness
- Documented minimum 4a; no upper limit is documented.
3. Legal, ecological, and broader status
- Legal-list status
- Set a location for an exact legal-list result; source silence is not clearance.
- Seed-list status
- Set a location to compare the separate state noxious-weed seed layer.
- Reported invasive here
- No ecological invasive report is normalized; that does not prove noninvasiveness.
- Broader regional context
- Aggregate AK, HI, and L48 evidence is shown only as regional context, never as an exact-state finding.
- Federal context
- Federal designations remain separate from state legal-list results.
How to read this page
The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.
- Form
- tree
- USDA hardiness
- Minimum 4a; upper limit not documented
- Mature height
- ~20 ft
- Light
- Full sun
- Water need
- moderate
- Grows in
- CT, DC, DE, MD, NJ, NY, OH, PA +2
- Rated in
- Global; eastern US; north-eastern and mid-Atlantic United States
- Family
- Rosaceae
- Evidence
- 3 cited sources
Plant hardiness evidence
-
Eastern United States Fire Performance Plant Selector
Source prints 4 · single-value meaning unresolved
-
USDA PLANTS Database — Plant Characteristics
Minimum 4a · no upper limit documented
Conditions in the fire evidence
Where its sources say to plant it
- Eastern United States Fire Performance Plant Selector: Landscape Zone 3 — 10–30 ft from the structure; thin vegetation, remove debris, and minimize plant massing
The evidence
Mid-scale / conditional (2)
-
Eastern United States Fire Performance Plant Selector
“MODERATELY Firewise (2)”
Older cultivars loose leaves early due to apple scab-fragrant flowers in spring.
-
Combustion characteristics of north-eastern USA vegetation tested in the cone calorimeter
“Measured; not in an author-named high or low effective-heat-of-combustion group”
Conditioned foliage and twigs were tested at 25 kW/m2 in a cone calorimeter.
Listed without a rating (1)
-
FLAMITS: FLAMmability plant traiTS database
“calorific value (kcal/kg): 2794.5”
FLAMITS record 2875; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Dibble2007-1; sampling ND. Primary study Dibble2007: Dibble, A. C., White, R. H., & Lebow, P. K. (2007). Combustion characteristics of north-eastern USA vegetation tested in the cone calorimeter: invasive versus non-invasive plants. International journal of wildland fire, 16, 426-443.
