Keep the floral arrangement in a location without direct sunlight and away from extreme heat or cold. Do not place the arrangement near a drafty door or near a source of heat for best results. According to the University of California, the cooler the room temperature, the longer your floral arrangement will last -- most cut flowers can withstand temperatures down to 32 degrees Fahrenheit without damage.
Touch the OASIS floral foam every day with your finger to check the moisture level. When you push the foam gently with the tip of your finger, it should give slightly and you should feel moisture.
Lift the OASIS floral foam and the flowers out of the container if it does not feel moist when you touch it. Place the foam and flowers in the sink under the faucet and run a gentle stream of water down onto them. Continue hydrating the foam for about one to two minutes until it feels saturated again.
Leave the OASIS floral foam and the flowers in the sink to drain for about 30 minutes.
Return the arrangement to its container after the OASIS floral foam drains sufficiently.
Continue to monitor the foam's moisture daily and repeat the rehydrating process when it feels dry.
Remove spent flowers from the arrangement as they wilt and discard them. This will keep your arrangement looking attractive for as long as possible.