Yes, definitely shove something up the stem. If you hang onto all your long rose stems and dry them out, they are good for that sort of thing. Hold the Amy upside down, pour in some water and then tape the end quite firmly to seal in the water. You can then push it into the oasis. There should be enough water to last a week but any longer you'll have to watch it. Depends on what its for. If a wedding then it's only for the moment anyway. If it was for longer, i'd steer away from oasis and have it in water.

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