Blackthorn or Sloe, Prunus spinosa, blossom on bare wood twigs against a blue sky.

Cherry, Prunus, showing the difference between the defoliated tree above the trail and the healthy one below and the pollution from the aircraft flying over London?s East End.

Hawthorn, Crataegus laevigata, twig with sprigs of blossom showing pink tipped stamen.

Snowymespilus, Amelanchier lamarckii.

Snowymespilus, Amelanchier lamarckii.

Palm, Date palm, Phoenix canariensis.

Jostaberry, Ribes x nidigrolaria , growing on the plant.

Jostaberry, Ribes x nidigrolaria , growing on the plant.

Gooseberry, Ribes uva-crispa 'Black velvet', growing outdoor on the plant.

Gooseberry, Ribes uva-crispa 'Black velvet', growing outdoor on the plant.

Magnolia, cropped view of individual blossom on bare stems with petals dark pink at base fading to pale pink and white.

Magnolia soulangeana. Close up of tulip-like white flowers flushed pink at the base against blue sky.