Elder seedling identification Sambucus nigra.
Elder grow quickly and can become a big weed shrub, though they do produce an abundance of fruit for the birds in autumn. The Elder rely on birds to distribute their seeds and is why the Elder are spread wide and far.
It is difficult to identify what the plant by the cotyledons and even the first pair of true leaves. You can identify the Elder when they grow the pinata leaves which grow in oppositepais consisting of two, three or four pairs of broadly egg-shaped, serrated leaflets and terminal one.
Images Copyright Neil Bromhall. www.rightplants4me.co.uk
For in interactive plant database to help with plant identification where you can select by Latin or common name, colour, height, month etc. and accompanied with 9,000 images please see www.complete-gardens.co.uk