Cortaderia selloana

Minor. (Horizon scanning consensus for Gibraltar (Unknown); Horizon scanning draft for Gibraltar version 0.4 (Unknown).); Socio economic impacts: Major. "It is a very invasive plant, forming dense, often impenetrable, stands that can damage grazing lands, interfere with afforested areas, affect visibility on roads and hinder access to certain natural areas (e.g. stream margins). In New Zealand, seed clinging to kiwifruit [Actinidia deliciosa] are rejected for export (ISSG, 2009). The costs of control are significant in New Zealand (DiTomaso, 2000) and Spain (Andreu et al., 2009)." CABI. (Horizon scanning draft for Gibraltar version 0.1 (Unknown).); Socio economic impacts: Major. "In New Zealand, good forestry establishment is sometimes impossible because of suppression of young trees by pampas grass (C. jubata and C. selloana) (Gadgil et al., 1984). The same authors estimated that releasing trees from pampas grass to allow them to barely survive cost about NZ$350 ha-1 in 1983, and that later tending operations like pruning and thinning have been estimated to increase total tending costs by 144%. Complete body cover is needed to protect operators from the sharp edges of the leaves." (CABI). (Horizon scanning draft for Gibraltar version 0.3 (Unknown).);