Hi Hilary, that's just a selection.
The red flower is what I insist on still calling Senecio confusus although I am told I must now get used to referring to it as Pseudogynoxys chenopodioides. The flowers open orange and then age to the red of the ones shown.
The orange flower is Carthamus tinctorius, (Safflower). It is, I believe, one of the oldest plants grown as a crop. It had several uses. It was used as a cheap substitute for saffron and was referred to as 'bastard saffron', if you'll pardon my language. The seeds were, and are, used to produce safflower seed oil. Textiles from ancient Egypt have been shown to have been coloured using a dye from the plant.