Summer
As the summer starts to kick in your garden should erupt in an explosion of colour!
To help perfect the colour palette, the Royal Horticultural Society recommend planting peonies, delphiniums, campanulas and lupins. They also suggest planting roses alongside deutzias, and mallows (Lavatera) and philadelphus in the shrub border to create a truly spectacular display.
For extra splashes of colour in your garden you may consider Container Planting or Hanging Baskets.
As summer peaks large-flowered clematis can be used to scramble over spring-flowering shrubs, such as forsythia. Later on annuals such as Nicotiana and Cosmos are ideal for filling gaps between shrubs, and tender or half-hardy perennials, such as penstemons and diascias, are guaranteed to brighten any bed or border colour schemes.
Remember to regularly turn your pots though so the plants get equal exposure, otherwise the side facing the wall will perform poorly in comparison to the side in direct sunshine. Remember, as a general rule, the larger the container, the happier the plant!