Can you please tell me why rio purslane closes up so early in the day? Mine are planted in full sun. Right now mine are closing around 2 pm. It has been an extremely hot summer. Would this be a reason for the early closure of flowers? I really love the colors. They are so brilliant. I shall look foreward for your answer.
Yes, this would be the reason for the flowers closing. The plant's main objective is to produce seeds. In order to do this, it must protect its flowers. So, in many plants, the flowers will close in extreme heat and during rain to protect the pollen inside.