Read more: 15 Types Of Red Flowers That Will Look Perfect In ... Fortunately, this means that in many regions once your border garden of cosmos and dahlias is established, it should return year ...

If you only grow one type of cosmos in your garden borders, it has to be this ... A vibrant mix of fiery yellow, orange, and red semi-double flowers that look like marigolds or geums.

My chocolate cosmos ... through to dark red, while ‘Purity’ reaches 1.2m (4ft) high so can be placed among perennials. If you want a shorter variety for the front of the border, try ‘Sonata’.

But there is a cosmos that is not out of this world. This cosmos is a historic herbaceous plant that fills summer gardens with showy flowers ... massed or planted in borders, in screens and ...