Can you suggest some flowering plants for my patio? I have a few fluent areas on my property that has...

I have a few fluent areas on my property that has trees and pine straw,no grass.I would approaching to plant some sorts of flowering plants.Perferably plants that bloom from spring to fall.Also I would similar to them to come back year after year.Spreading plants are fine and perferable as long as they are not to invasive.There are both sunny and shady locations.Looking for something that does not require profoundly of watering or maintenence.The soil is clay type soil.If you can suggest some plants I would be greatful. Thanks.
Stems of my squash plants are black?
Answers:    Daylilies
'Stella D'Oro' variety will flower adjectives summer (yellow)
Where can I catch a Wormery within Spain?
As I was feed up planting flowers which would flower then die (and I'd own to dig them out again!) I discovered a plant call Convoluvus. Apparently they do come in other colours but I've singular found the purpley lilac ones - they flower every single year (I think they die put money on when it's a bit cold though) but they can be quite invasive and pocket over a whole border!
Garden weed?