United States / Grow / princesstree

princesstree (Paulownia tomentosa)
Photo: (c) Henry Miller, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

princesstree

Paulownia tomentosa · Paulowniaceae · also called Empresstree · 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.

The Paulownia tomentosa file for paulownia tomentosa places legal list. On paulownia tomentosa, 1 ecological invasive sits versus that paulownia tomentosa row. The facts answer different questions on Paulownia tomentosa. 2 legal list and 1 ecological invasive stay split for paulownia tomentosa.

On paulownia tomentosa, Paulownia tomentosa also carries hardiness rows for paulownia tomentosa.

Use evidence on paulownia tomentosa for paulownia tomentosa. Use legal-list on paulownia tomentosa for paulownia tomentosa. The jumps stay with paulownia tomentosa on Paulownia tomentosa.

Form
tree
Mature height
~50 ft
Light
Full sun
Water need
moderate
Rated in
Catalonia, Spain; Global; Japan; Ohio / Midwest +3
On this lot

1. Fire evidence and conditions

Fire evidence
Fire-resistant — location does not change the cited classification.
Placement evidence
3 source placement records; source schemes remain separate.
Evidence regions
Catalonia, Spain; Global; Japan; Ohio / Midwest; Valencia, Spain / western Mediterranean; Virginia / Mid-Atlantic; eastern US
Typed publication scope: 2 scopes across 2 cited fire sources
  • Firewise Landscaping (OSU Extension Bulletin 921) · Official scoped edition
    • OH; partial normalized coverage · 2006-03-01

      Ohio State University Extension Bulletin 921 is an Ohio publication that describes Ohio fire seasons and landscape conditions and labels nativity to Ohio. FireApproved publishes 352 exact source-owning plant records from its eight rated tables. This historical publication scope does not assert current extension endorsement or that a listed plant suits every Ohio site.

  • Virginia Firescapes — Firewise Landscaping for Woodland Homes (430-300) · Official scoped edition
    • VA; partial normalized coverage · 2009-04-15

      Virginia Cooperative Extension's publication opens with Virginia wildfire conditions, identifies its Virginia Firewise Landscaping Task Force, and labels plants native to Virginia. FireApproved publishes 306 exact source owners. Publication scope does not establish parcel suitability or current endorsement of this archived 2009 list.

2. Why this plant is relevant here

State distribution
Documented in AL, AR, CT, DC, DE, FL, GA, IL, IN, KY, LA, MA, MD, MO, MS, NC, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, WA, WV.
Introduced / established
30 sourced range or established records. This is not an invasive warning.
USDA hardiness
Documented minimum 6a; no upper limit is documented.

3. Legal, ecological, and broader status

Legal-list status
2 legal-list records; the Place chip matches exact scope.
Reported invasive here
1 ecological invasive report.
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.

Native and introduced range evidence

These are exact U.S. botanical-area records from the cited range source. Native and introduced describe biogeographic relationship, not fire performance or planting approval. Doubtful and extinct rows stay visible but do not count as current presence.

Current native

0

exact source areas

Current introduced

30

exact source areas

Qualified

0

doubtful or extinct source rows

30 introduced source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04
  • Alabama (AL)
  • Arkansas (AR)
  • Connecticut (CT)
  • District of Columbia (DC)
  • Delaware (DE)
  • Florida (FL)
  • Georgia (GA)
  • Hawaii (HI)
  • Illinois (IL)
  • Indiana (IN)
  • Kentucky (KY)
  • Louisiana (LA)
  • Massachusetts (MA)
  • Maryland (MD)
  • Missouri (MO)
  • Mississippi (MS)
  • North Carolina (NC)
  • New Jersey (NJ)
  • New York (NY)
  • Ohio (OH)
  • Oklahoma (OK)
  • Oregon (OR)
  • Pennsylvania (PA)
  • Rhode I. (RI)
  • South Carolina (SC)
  • Tennessee (TN)
  • Texas (TX)
  • Virginia (VA)
  • Washington (WA)
  • West Virginia (WV)

The lossless worldwide derivative is retained once in the research corpus; object pages repeat only exact U.S. areas needed by the local lens. The JSON twin carries the same page assertions.

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.

Recommends (4)

Mid-scale / conditional (2)

Listed without a rating (27)
Corroboration (27 rows from 1 source)
  • FLAMITS: FLAMmability plant traiTS database — Dryad / Global Ecology and Biogeography · Dryad version 9 · original source Corroboration Trait database lineage: meta-aggregator

    27 cited rows from this source; its identity, lineage and tier are stated once.

    • Primary study Lizhong2007: Lizhong, Y., Zaifu, G., Yupeng, Z., & Weicheng, F. (2007). The influence of different external heating ways on pyrolysis and spontaneous ignition of some woods. Journal of Analytical and Applied Pyrolysis, 78, 40–45.

      Shared row context: plant part wood; fuel live; predrying no; device burning bench; site Lizhong2007-1; sampling ND.

      • Shared measurement context: Combustibility measurement.

        • “maximum flame temperature (°C): 271”

          FLAMITS record 17487.

        • “maximum flame temperature (°C): 292”

          FLAMITS record 17490.

        • “maximum flame temperature (°C): 283”

          FLAMITS record 17493.

        • “maximum energy flux (kW/m²): 28.9”

          FLAMITS record 17511.

        • “maximum energy flux (kW/m²): 34.3”

          FLAMITS record 17514.

        • “maximum energy flux (kW/m²): 39.8”

          FLAMITS record 17517.

        • “mass loss rate per area (g/m² s): 18.4”

          FLAMITS record 17519.

        • “mass loss rate per area (g/m² s): 20”

          FLAMITS record 17523.

        • “mass loss rate per area (g/m² s): 30”

          FLAMITS record 17527.

        • “mass loss rate per area (g/m² s): 19.4”

          FLAMITS record 17530.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 131.25”

          FLAMITS record 17495.

        • “time to flaming (s): 96.75”

          FLAMITS record 17499.

        • “time to flaming (s): 83.25”

          FLAMITS record 17503.

        • “time to flaming (s): 66”

          FLAMITS record 17506.

      • Shared measurement context: Sustainability measurement.

        • “rate of burning spread (cm/s): 0.001”

          FLAMITS record 17535.

        • “rate of burning spread (cm/s): 0.001433333”

          FLAMITS record 17538.

        • “rate of burning spread (cm/s): 0.001683333”

          FLAMITS record 17541.

        • “rate of burning spread (cm/s): 0.001866667”

          FLAMITS record 17544.

    • Primary study Harada2001: Harada, T. (2001). Time to ignition, heat release rate and fire endurance time of wood in cone calorimeter test. Fire Materials, 25, 161–7.

      Shared row context: plant part wood; fuel dead; predrying yes; device calorimeter; site Harada2001-1; sampling ND.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 30”

          FLAMITS record 18848.

        • “time to flaming (s): 14”

          FLAMITS record 18849.

        • “time to flaming (s): 10”

          FLAMITS record 18850.

      • Shared measurement context: Combustibility measurement.

        • “mass loss rate per area (g/m² s): 5.9”

          FLAMITS record 18963.

        • “mass loss rate per area (g/m² s): 6.6”

          FLAMITS record 18964.

        • “mass loss rate per area (g/m² s): 8”

          FLAMITS record 18965.

        • “energy flux (kW/m²): 75”

          FLAMITS record 19078.

        • “energy flux (kW/m²): 83”

          FLAMITS record 19079.

        • “energy flux (kW/m²): 96”

          FLAMITS record 19080.

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

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

Paulownia tomentosa (Empresstree). FireApproved. https://fireapproved.com/plants/paulownia-tomentosa/. Last verified 2026-08-23.