Portulaca flowers:

porsche9, Jan 25, 7:58pm
If bought now, would they still be flowering over easter!

harrislucinda, Jan 25, 8:04pm
wellyoucouldtry

tansey, Jan 26, 1:12am
Keep them well watered and they should be.

gbking, Feb 9, 1:55am
If you get frost before Easter probably not, pansys/violas could be a safer alternative