Producing extensive cover along the east side and at Europa Point. (Species that have been introduced into Gibraltar. (Unknown).); Spreads slowly and vegetatively. Localised within Upper Rock. Large stands grow where they have been planted, such as in gardens, along Europa Advance Road and the east side. A few stands of Aloe arborescent occur within the Upper Rock. For example, there are several stands around Mediterranean Road, where the largest population occurs, and also around Bruce's and Ince's farms. Furthermore, most stands of this plant that are found within the Upper Rock Nature Reserve are small. (Perez, C.E. & Bensusan, K. (2005) The Upper Rock Nature Reserve, A Management and Action Plan. The Gibraltar Ornithological & Natural History Society. Gibraltar); Very Common. (Gibraltar flora database (Unknown));
- 3.5. Shrubland – Subtropical/tropical dry
- 3.6. Shrubland – Subtropical/tropical moist
- 3.8. Shrubland – Mediterranean-type shrubby vegetation
Invasive. (Species that have been introduced into Gibraltar. (Unknown).; Pagad S, Wong L J (2020): Global Register of Introduced and Invasive Species of Gibraltar; Perez, C.E. & Bensusan, K. (2005) The Upper Rock Nature Reserve, A Management and Action Plan. The Gibraltar Ornithological & Natural History Society. Gibraltar);
Forms large stands that dominate over local flora. This species does not, therefore pose a significant threat to local flora. However, in the areas where it does occur in large numbers, Aloe arborescent forms very dense stands that exclude native flora. (Perez, C.E. & Bensusan, K. (2005) The Upper Rock Nature Reserve, A Management and Action Plan. The Gibraltar Ornithological & Natural History Society. Gibraltar);
Terrestrial. Introduced from South Africa. (Species that have been introduced into Gibraltar. (Unknown).);
Does not set seed and does not spread to new sites by natural means (Cortes & Abrines 1994).
Pagad S., Wong L.J. (2020): Global Register of Introduced and Invasive Species – Gibraltar. v1.1. Invasive Species Specialist Group ISSG; Perez, C.E. & Bensusan, K. (2005) The Upper Rock Nature Reserve, A Management and Action Plan. The Gibraltar Ornithological & Natural History Society. Gibraltar; Gibraltar Nature Reserve Management Plan (2019). Department of the Environment, Heritage and Climate Change. H.M. Government of Gibraltar; Gibraltar flora database (Unknown);