Your order should arrive with packets of flower food that can be placed directly into the vase. From there, please switch out the water every few hours to ensure optimum freshness. If you run out of flower food, feel free to create your own mixture placing white sugar and dish soap into the vase. This will ensure the stems are properly fed and sterilized to prevent any wilting. If you have any further questions, please do not hesitate to reach out to firstname.lastname@example.org.