Hydrangea umbellata alba. This marvellous little hydrangea evokes memories of snow covered mountains with its abundance of dainty creamy white lace cap flowers. At first many would be tricked into thinking they are looking at a viburnum rather than a hydrangea. Small shrub to 1 metre with very delicate white lace cap flowers which open in summer. This little beauty does best with a little more sun than your average hydrangea.