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United States / Grow / river redgum

river redgum (Eucalyptus camaldulensis)
Photo: (c) MargaretRDonald, some rights reserved (CC BY-SA) (CC BY-SA), via iNaturalist. Species-typical, not necessarily this cultivar.

river redgum

Eucalyptus camaldulensis · Myrtaceae · all Eucalyptus records · also called River red gum · 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.

Eucalyptus camaldulensis opens with the WUI ignition-index study. Its green condition stays under test conditions, while the evidence table records an avoid result with limited evidence. Those details retain their separate roles in the source pack.

The 2 ecological invasive reports answer a different question and remain outside the fire tally. If the avoid result changes the planting choice, related plants presents cited same-form alternatives with their own support. This keeps the lab context, ecological reports, and recommendation for river red gum from being counted as one kind of evidence.

Fire-resistant trees instead

Form
tree
Mature height
~120 ft
Water need
high
Rated in
Córdoba, southern Spain; Global
On this lot

1. Fire evidence and conditions

Fire evidence
Highly flammable — location does not change the cited classification.
Fire-performance conditions
1 condition stated in cited fire-evidence rows.
Evidence regions
Córdoba, southern Spain; Global

2. Why this plant is relevant here

State distribution
Documented in CA, FL, HI, PR.
Introduced / established
4 sourced range or established records. This is not an invasive warning.
USDA hardiness
Documented minimum 8b; no upper limit is documented.

3. Legal, ecological, and broader status

Reported invasive here
2 ecological invasive reports.
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

4

exact source areas

Qualified

0

doubtful or extinct source rows

4 introduced source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04
  • Arizona (AZ)
  • California (CA)
  • Hawaii (HI)
  • Puerto Rico (PR)

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.

Conditions in the fire evidence

These describe tested or rated plant material. They are not horticultural maintenance instructions.

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)

Listed without a rating (47)
Corroboration (47 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

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

    • Primary study Gillon1997: Gillon, D., Hernando, C., Valette, J.-C., & Joffre, R. (1997). Fast estimation of the calorific values of forest fuels by near infrared-reflectance spectroscopy. Canadian Journal of Forest Research, 27, 760-765.

      Shared row context: Combustibility measurement; fuel live; predrying yes; device calorimeter; site Gillon1997-1; sampling june to september.

      • “calorific value (kcal/kg): 4134.42”

        FLAMITS record 3912; plant part bark.

      • “calorific value (kcal/kg): 4791.25”

        FLAMITS record 3921; plant part twigs.

      • “calorific value (kcal/kg): 4965.61”

        FLAMITS record 3924; plant part litter.

    • Primary study Hachmi2011: Hachmi, M. H., Sesbou, A., Benjelloun, H., El Handouz, N., & Bouanane, F. (2011). A Simple Technique to Estimate the Flammability Index of Moroccan Forest Fuels. Journal of Combustion, 2011, 1-11.

      Shared row context: plant part twigs; fuel live; predrying no; device epiradiator; site Hachmi2011-1; sampling ND.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 3.8”

          FLAMITS record 4707.

        • “flammability value: 2.12”

          FLAMITS record 4801.

      • “flame height (cm): 22”

        FLAMITS record 4749; Combustibility measurement.

      • “burning duration (s): 12.9”

        FLAMITS record 4750; Sustainability measurement.

    • Primary study Madrigal2011a: Madrigal, J., Guijarro, M., Hernando, C., Díez, C., & Marino, E. (2011a). Effective Heat of Combustion for Flaming Combustion of Mediterranean Forest Fuels. Fire Technology, 47, 461-474.

      Shared row context: plant part twigs; fuel live; predrying no; device calorimeter; site Madrigal2011a-1; sampling ND.

      • “flaming duration (s): 46”

        FLAMITS record 7327; Sustainability measurement.

      • Shared measurement context: Combustibility measurement.

        • “maximum energy flux (kW/m²): 349”

          FLAMITS record 7347.

        • “mass loss rate (g/s): 0.06”

          FLAMITS record 7387.

        • “total heat release (MJ/m²): 20.01”

          FLAMITS record 7407.

      • “time to flaming (s): 2”

        FLAMITS record 7367; Ignitability measurement.

    • Primary study Martin1989: Martín, E., & Miguel, L. (1989). Inflamabilidad y energía de las especies de sotobosque

      Shared row context: fuel live; predrying yes; device epiradiator; site Martin1989-7.

      • Shared measurement context: Ignitability measurement; plant part twigs; sampling february.

        • “time to flaming (s): 10”

          FLAMITS record 7694.

        • “ignition frequency (%): 100”

          FLAMITS record 8093.

      • Shared measurement context: Ignitability measurement; plant part twigs; sampling march.

        • “time to flaming (s): 20”

          FLAMITS record 7695.

        • “ignition frequency (%): 100”

          FLAMITS record 8094.

      • Shared measurement context: Ignitability measurement; plant part wood; sampling february.

        • “time to flaming (s): 8”

          FLAMITS record 7696.

        • “ignition frequency (%): 100”

          FLAMITS record 8095.

      • Shared measurement context: Ignitability measurement; plant part wood; sampling march.

        • “time to flaming (s): 20”

          FLAMITS record 7697.

        • “ignition frequency (%): 100”

          FLAMITS record 8096.

      • Shared measurement context: Combustibility measurement; plant part twigs; sampling ND.

        • “calorific value (kcal/kg): 4804”

          FLAMITS record 7896.

        • “calorific value (kcal/kg): 3780”

          FLAMITS record 7897.

      • Shared measurement context: Ignitability measurement; plant part twigs; sampling ND.

        • “flammability value: 5”

          FLAMITS record 7944.

        • “flammability value: 5”

          FLAMITS record 7945.

    • Primary study Molina2017: Molina, J. R., Martín, T., Rodríguez Y Silva, F., & Herrera, M. Á. (2017). The ignition index based on flammability of vegetation improves planning in the wildland-urban interface: A case study in Southern Spain. Landscape and Urban Planning, 158, 129-138.

      Shared row context: plant part leaves; fuel live; predrying no; device epiradiator; site Molina2017-1; sampling summer.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 8.88”

          FLAMITS record 9296.

        • “flammability value: 5”

          FLAMITS record 9332.

      • “flaming duration (s): 11.54”

        FLAMITS record 9314; Sustainability measurement.

    • Primary study Molina2019: Molina, J., Lora, A., Prades, C., & Silva, F. R. (2019). Roadside vegetation planning and conservation: New approach to prevent and mitigate wildfires based on fire ignition potential. Forest ecology and management, 444, 163-173.

      Shared row context: plant part leaves; fuel live; predrying no; device epiradiator; site Molina2019-1; sampling july and september.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 10.05”

          FLAMITS record 9359.

        • “flammability value: 2.47”

          FLAMITS record 9401.

      • “flaming duration (s): 12.2”

        FLAMITS record 9373; Sustainability measurement.

      • “flame height (cm): 14.13”

        FLAMITS record 9387; Combustibility measurement.

    • Primary study Msweli2020: Msweli, S. T., Potts, A. J., Fritz, H., & Kraaij, T. (2020). Fire weather effects on flammability of indigenous and invasive alien plants in coastal fynbos and thicket shrublands (Cape Floristic Region). PeerJ, 8, e10161.

      Shared row context: plant part branches; fuel all; predrying yes; device grill; site Msweli2020-1; sampling february to november.

      • Shared measurement context: Ignitability measurement.

        • “time to flaming (s): 61.29”

          FLAMITS record 9482.

        • “time to flaming (s): 11.6”

          FLAMITS record 9572.

      • Shared measurement context: Combustibility measurement.

        • “maximum flame temperature (°C): 726.92”

          FLAMITS record 9512.

        • “maximum sample temperature (°C): 746.16”

          FLAMITS record 9602.

      • Shared measurement context: Consumability measurement.

        • “burnt biomass (%): 91.38”

          FLAMITS record 9542.

        • “burnt biomass (%): 90.13”

          FLAMITS record 9632.

    • “maximum sample temperature (°C): 667”

      FLAMITS record 16448; Combustibility measurement; plant part leaves; fuel live; predrying yes; device burning bench; site Nestola2022-1; sampling august 2019. Primary study Nestola2022: Nestola, E., Sgrigna, G., Pallozzi, E., Caccavale, L., Guidolotti, G., & Calfapietra, C. (2022). Experimental Characterization of Particulate and Gaseous Emissions from Biomass Burning of Six Mediterranean Species and Litter. Forests, 13, 322.

    • Primary study Wang2021: Wang, H., van Eyk, P. J., Medwell, P. R., Birzer, C., Tian, Z., Possell, M., & Huan, X. (2021). Smouldering fire and emission characteristics of Eucalyptus litter fuel. Fire and Materials, 46, 576- 586.

      Shared row context: fuel live; predrying yes; site Wang2021-1; sampling ND.

      • “calorific value (kcal/kg): 3869.303531”

        FLAMITS record 16797; Combustibility measurement; plant part bark; device calorimeter.

      • “calorific value (kcal/kg): 4776.91794”

        FLAMITS record 16798; Combustibility measurement; plant part leaves; device calorimeter.

      • “calorific value (kcal/kg): 3558.803865”

        FLAMITS record 16799; Combustibility measurement; plant part twigs; device calorimeter.

      • Shared measurement context: Combustibility measurement; plant part bark; device thermal analyzer.

        • “maximum flame temperature (°C): 687.02”

          FLAMITS record 16809.

        • “maximum flame temperature (°C): 681.08”

          FLAMITS record 16810.

        • “maximum flame temperature (°C): 643.18”

          FLAMITS record 16811.

      • Shared measurement context: Sustainability measurement; plant part bark; device thermal analyzer.

        • “rate of burning spread (cm/s): 7.46”

          FLAMITS record 16821.

        • “rate of burning spread (cm/s): 8.91”

          FLAMITS record 16822.

        • “rate of burning spread (cm/s): 6.46”

          FLAMITS record 16823.

Fire-resistant trees instead

sweetgum
Liquidambar styraciflua white ash
Fraxinus americana Lombardy poplar
Populus nigra 'Italica' boxelder
Acer negundo honeylocust
Gleditsia triacanthos Chinese elm
Ulmus parvifolia

Fire-resistant trees listed above

Same genus in the directory · the Eucalyptus group page

Last verified 2026-08-24. JSON (CC BY 4.0)

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

Eucalyptus camaldulensis (River red gum). FireApproved. https://fireapproved.com/plants/eucalyptus-camaldulensis/. Last verified 2026-08-24.