Do not forget the pleasures of Acers in spring and early summer. New buds and leaves are an interesting feature of carefully chosen species. Visit a good garden center or a renown public garden like RHS Harlow Carr in Harogate  We know that Maple trees or Acers have exceptional colour in autumn which is why tourists flock to New England and the eastern seaboard to see the flaming colours. Cold nights and warm days are the conditions that help turn green leaves to vibrant colours. With the falling temperatures, the lush green colours of summer have been replaced with vivid reds, golden yellows and browns.

However autumn is not the only season when colour and form can captivate as shown below. The RoyalHorticultural Society (RHS)

Why do Some Leaves Turn Red
Leaves naturally turn yellow as the chlorophyll breaks down and the green disappears but yellow can attracts sap-sucking aphids.
Some species of tree produce a bright red pigment into the leaves to confuse these insects.
Some trees are naturally red pigmented from the outset.

Gardeners Top Tip
Plant Acer palmatum ‘Matsukaze’, which opens bright bronze-red turns olive green, flushed with purple but then scarlet in autumn colour, where sun can shine through the coloured leaves to enhance the autumn effect.