These three simple tricks will help your flowers live their best lives in the vase:
1) As soon as you get them home, give your stems a 1/2" trim and place into a clean vessel with cool water. Do this every 2 or 3 days to keep your flowers hydrated and happy.
2) Keep out of direct sunlight. Really, they're your flowers so do whatever you want, but keeping them on your kitchen island or bedside table and not on a windowsill will ensure they last longer in your home.
3) Ripening fruit and flowers don't mix. As fruit ripens, especially apples and bananas, they release ethylene gas which will in turn speed the decay of other organic material nearby. Keep your flowers a healthy distance from your bowls of fruit and all will be well.
Easy peasy!