Prunus padus) in full bloom beside one of the lakes. The bark of the Bird Cherry was, in medieval times, left outside the door to ward off the plague. How effective a deterrent this was, is in doubt!
Allium triquetrum) is superficially similar to the Bluebells above, but closer inspection reveals it's 'onion' ancestry (as does the scent).
Part two of Chris Packham's Malta Massacre - not a comfortable watch!