Holly, Ilex aquifolium.

Cotton lavender, Santolina, Santolina chamaecyparissus.

Sea Holly, Eryngium tripartitum.

Russian sage, Perovskia 'Blue Spire'.

Horse Chestnut, Conker, Aesculus hippocastanum.

Agave, Agave tequiliana.

Honesty, Lunaria annua.