United States / Grow / castor aralia

castor aralia (Kalopanax pictus)
Photo: (c) Juvia Heuchert, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

castor aralia

Kalopanax pictus (accepted: Kalopanax septemlobus) · Araliaceae · Wikipedia

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Is this one for your yard?

Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.

Kalopanax pictus places keep away recommendation. Then limited evidence on Kalopanax pictus. The citations do not collapse — Kalopanax pictus. On kalopanax pictus, avoid does not replace limited evidence. Kalopanax pictus is the taxon those two facts attach to.

Kalopanax pictus also carries 1 ecological invasive reports. Kalopanax pictus also carries same form alternatives.

Use evidence on Kalopanax pictus. Use related plants on Kalopanax pictus. Kalopanax pictus keeps the sourced table. On kalopanax pictus, avoid sits with limited evidence beside Kalopanax pictus. The table for kalopanax pictus still names Kalopanax pictus.

Fire-resistant trees instead

Form
tree
Mature height
~15 ft
Light
Full sun
Rated in
eastern US
On this lot

1. Fire evidence and conditions

Fire evidence
Highly flammable — location does not change the cited classification.
Placement evidence
1 source placement record; source schemes remain separate.
Evidence regions
eastern US

2. Why this plant is relevant here

State distribution
Documented in CT, DC, DE, IN, MD, NJ, NY, OH, PA, VA, WV.
Introduced / established
1 sourced range or established record. This is not an invasive warning.
USDA hardiness
Only uncertain or inapplicable hardiness rows are cited; no primary zone is projected.

3. Legal, ecological, and broader status

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.

Plant hardiness evidence

These values describe the plant source. Your ZIP zone comes from the separate 2023 USDA Plant Hardiness Zone Map. Whole-zone values stay whole-zone, and a single unresolved value is not treated as a tolerance range. Different source boundaries stay separate: overlapping statements are compared independently, while only ranges with no shared zone are called a conflict.

Where its sources say to plant it

Placement rules below use each source's own distances or named zones, tied to its rating. They are not interchangeable with the directory's current Zone 0 guidance.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Avoids (1)

Fire-resistant trees instead

Fire-resistant trees listed above

Last verified 2026-08-23. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF · iNaturalist · Wikidata · Wikipedia · ITIS

Kalopanax pictus (Castor aralia). FireApproved. https://fireapproved.com/plants/kalopanax-pictus/. Last verified 2026-08-23.