Going to the bottom of the garden you have in an undulating shape our largest border which is called the Autumn Border. The colours have been inspired from India and are yellow, purple, orange, pink. Rupert Goldby told me his ladies would never use yellow, and in fact one lady had taken his use of yellow out. I think that is her loss. We have plenty of Asters, and we also have Heleniums Sahins early flowerer. If you dead head that regularly it will continue to flower for 3 months. There is virtually nothing else that will do that. Standing at the back is Achillea Gold Plate which is like a tall flat plate. I dithered with using this for many years as thought it would be too harsh a colour, but it has been a huge success and I saw it growing at Kew. You only dead head it when the the flowers go brown. It is huge and self supporting, Monardas take their place and what beautiful colours they are, sometimes they turn white with mildew but on the whole not. If I ruled out the colour yellow i would have Monarda, purple, bright pink, and purple. We have various grasses, two huge ones which are called Miscanthus sinensis Yakushima dwarf, though the word dwarf is hardly applicable. Aconitum Carmichaeli Royal Flush, which comes up with beautiful pink foliage, This is deep blue, Sunningdale Yellow , Monarda Melissa, Monarda Cambridge Scarlet, Sorbus Joseph Rock, two of them, with pale orange berries. One of the most beautiful grasses I have ever seen and it is called Miscanthus Silberspinne and came from my favourite nursery, Marchants Hardy Plants, Graham Gough.