Outdoor plants

If you visit your Garden Centre once a month and buy two plants in flower each time you visit, you will finish up woth a garden that always has something in flower.

If you mean - are there any plants that flower continuously throughout the year, then, no there aren't. However, there are some which have long flowering periods and some which literally only flower for 1day! A good long-flowering shrub is and evergreen called 'Viburnum tinus'This starts in the late autumn and carries on right through until the following summer! For summer colour, Penstemons are long-flowering, as are Achillea. These two go together well. Salvias like S.nemorosa (pink or purple) flower for ages if you keep dead-heading. My Erigeron karvinskianus starts flowering in the spring and carries on until the autumn. Hope this gives you an idea of some long-flowering plants to search out!