Hi! That depends on you. When you get the roses, cut the stem with a knife NOT scissors at an angel. Lay them in a bath tub of cool water for 30 minutes or more.
Put either sugar , the packet or an aspirin in the water and return to vase. Could last 1-2 weeks or more. My friend owns a florist, that's how I know. Works every time. If you have any other questions, please ask.
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