Blue passionflower is regarded as an environmental weed in Victoria and some parts of NSW. It is cultivated for it's flowers and as a stock for grafted passionfruits. Blue passionfruit can sprout from below the graft, growing rapidly and escaping cultivation. It can spread quickly in bushland areas, densly smothering native vegetation.
Blue passion flower plants have large leaves 8–12 cm long, that are deeply divided into usually five lobes. It has a distinct passionfruit flower with blue filaments (hair-like structures in centre) in the flower.
Richardson FJ, Richardson RG and Shepherd RCH (2006). Weeds of the south-east an identification guide for Australia. RG and FJ Richardson, Melbourne.
Department of Employment, Economic Development and Innovation (2011) Blue passionflower, Passiflora caerulea. Queensland Government. Available at: http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Passiflora_caerulea.htm. Accessed 2014.
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Regionally Controlled Weed
The plant must be fully and continuously suppressed and destroyed