Flowers will require to get used to the temperature (just like humans) upon arrival. Leave the flowers without any water for 30 minutes before you actually put them in the vase. This will make the flowers at ease and they won't be shocked by the temperature differences.

Cut the stems of the flowers approximately 2 cm diagonally with a sharp scissor or knife. Make sure the water remains untouched by leaves to avoid bacteria to grow. Don't remove any thorns as this could create 'wounds' on the stem which again could create bacteria to grow.

Make sure you have a very clean, glass vase ideally cleaned with chlorine and warm water. Fill the vase with water and add the flower food to the water. This flower food will give the flowers the extra energy they require to flourish even more and will reduce the growth of bacteria.

Position the vase anywhere where the flowers are free of wind, heat or direct sunlight to avoid that roses become 'sleepy'. Most of the flowers love heat and sunlight, however, cut flowers have difficulties to recover as they don't have any roots anymore.

Don't put the vase of flowers next to the fruit bowl. When fruit gets older it will go through a ripening process in which fruit exposes ethylene gas. This could damage the flowers potentially.