River red gum
Eucalyptus camaldulensis
A colossal biomass and shade tree that shrugs off both flood and drought — a proper heavyweight. Big, thirsty and known to drop limbs, so keep it well clear of buildings and small crops.
River red gum in a syntropic line
River red gum belongs in the Emergent layer as a Secondary biomass species. They frame the line. Rough in-row spacing starts around 1.6 m in a syntropic row. Good line partners include Apple, Elder. As a Secondary species it carries mid-term yield and structure while climax trees slowly claim the canopy.
Tolerances and growing conditions
- Strata
- Emergent
- Lifecycle
- Secondary
- Soil preference
- Clay, Loam
- Soil pH range
- 5.5 – 9
- Min. temperature
- -8°C
- Min. rainfall
- 250 mm/year
- Wind tolerance
- High
- Frost tolerance
- Medium
- Growth rate
- Fast
- Irrigation needed
- Medium
- Foliage
- Evergreen
- Waterlogging tolerance
- High
- Origin
- Australia
- Native to Portugal
- No
How to manage it
Massive biomass and shade tree that tolerates both flooding and drought; pollard on a strict cycle to control size and keep mulch flowing.
How to propagate
Sow fresh seed on moist seed compost and keep warm; germination is reliable but seedlings need careful early watering.
Guidance, not a guarantee — success varies by species and skill.
What to watch out for
Very large, thirsty and known for dropping heavy limbs without warning ('widow-maker'); allelopathic litter suppresses undergrowth. Site well away from buildings and small crops.
Frequently asked questions about River red gum
Is river red gum frost-hardy?
Yes for winter cold in many climates — generally hardy to around -8°C when dormant, with medium frost tolerance in the catalog. Flowering crops can still lose a season to late frost, so site them carefully.
What soil does river red gum need?
It does best on clay, loam ground, at pH about 5.5–9.
How much water does river red gum need?
Plan for a rainfall floor around 250 mm/year, plus medium irrigation once established.
Can river red gum handle wet or waterlogged soil?
Yes — river red gum has high waterlogging tolerance and copes with winter-wet ground.
What should I watch out for with river red gum?
Very large, thirsty and known for dropping heavy limbs without warning ('widow-maker'); allelopathic litter suppresses undergrowth. Site well away from buildings and small crops.
Design your line to see how your land fits River red gum.
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