Hablitzia under Norway Spruce

Hablitzia tamnoides (Caucasian spinach / stjernemelde) has self-sowed numerous times in my garden but only up to now on cultivated beds with naked soil.  Now for the first time I noticed one had popped up in dry soil under my two oldest Norway spruce trees (Picea abies; gran) which are probably in their 80s. There are a number of Hablitzia plants in a bed about 8m above this site  (I believe that  the shiny seeds of Hablitzia can disperse by falling on icy snow and are blown by the wind). This is an area which had been invaded by hedge mustard / løkurt (Alliaria petiolata). I’ve been systematically removing this plant from this area and other parts of the garden where it was rapidly taking over. Incidentally, another climber, Bryonia alba, appeared in the same location in 2010, but died after a few years (last picture). It wil be interesting to see if this plant manages to establish here. 
No, I don’t think Hablitzia has the potential to be invasive!

Self-seeded Hablitzia in dry soils under two old Norway spruce trees
The plant is located near the centre of this picture
There are several self-seeded Hablitzia plants in this bed about 8m away from the new site

 

Bryonia alba photographed in 2010 in the same location

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