I know this book seems to be expensive at first, but if you can find it on special offer anywhere, then BUY IT.

The pages are colourful and well written, and plants and flowers are listed by type, colour and basic size:
For example - 'Shrubs/Purple - Red/ Large

This is exactly the way I shop for plants - I know what I would like it to look like, but don't necessarily know the names.
A refreshing change from the usual list of plants in horticultural name order. Chances are, if you know the name, you'll generally have some idea of what it looks like.

There is still a very useful index of common names, plus an index of latin names.

As in my title - if its pouring with rain, and you wish you were out in the garden, just pick up the book and start to plan... the garden centre will love you.
Happy Reading