Prickly Comfrey (Symphytum asperum)

pale and dark purple, pink or white flowers, thorns; bell-shaped flowers; drooping flowers

Flowering Quince (Chaenomeles japonica)

Red flower; five petals; thorny bush

Wild Garlic (Allium ursinum)

wild garlic; white flowers; six petals; globular inflorescence

European Hornbeam (Carpinus betulus)

green bush/tree; fence bush; hedge bush; tree; prominent veins on leaves; corrugated texture and serrated edges

Common Lilac (Syringa vulgaris)

pink or lilac compound flowers; heart-shaped leaves; bush

Eastern Redbud (Cercis canadensis)

A tree with pink pea-like flowers; heart-shaped leaves

Goat Willow (Salix Caprea) catkins (female)

A bush with spiny flower like green structures (catkins)

White Dead-Nettle (Lamium Album)

White flowers

Alder Leaf Beetle (Agelastica alni)

blue shiny beetles 

Germander Speedwell (Veronica chamaedrys)

Germander Speedwell (Veronica chamaedrys) Weed; small wild blue flower; white center; dark blue veins