Taking care of cut flowers, please help me!?

My boyfriend gifted me with beautiful sunflowers, and I want to keep them beautiful and alive for as long as possible!





I change the vase water every 3 days and add a little sugar.





what else can i do to keep them alive and healthy?








also, one sunflower's petals have begun to shrivel up. i figure its from an air bubble or something, so i recut the stem under water; what else should i do for this one? if i remove the shriveled leaves will any grow back?














please help!

Taking care of cut flowers, please help me!?
Crush an aspirin in the water


or


put some sugar in the water that works for live Christmas trees


spray water on them along with watering them
Reply:It won't grow back. Trim the stems under warm water every two days, at a 45% aangle. Use warm water every time. Fill the vase with warm water, put a tiny pinch of plant food ,1/2 of an aspirin , or a little bit of 7-up soda in the water. But don't use all of those, just one. Also, put one little eye drop of bleach in the water. That keeps algae from forming in the vase,which in turn seals the ends of the stems and prevents them from getting water. ( that is that slimy stuff) And don't worry, they won't last forever. The longest I have keep any flowers in a vase was 2 weeks. That was doing what I said. Byee
Reply:re cut the bottom of the stems a little bit,Use a knife not scissors, and cut at an angle, turn on the COLD water and give them a little shower everyday, as well as replace the vase water everyday, this will perk them up and they will last for quite a long time.... no the leaves will not grow back
Reply:I one got a few roses from my boyfriend and i ended up growing a rose bush from them it was wild.....i always add aspirne to the water...sometimes a penny....trim the stems a little bit every other day
Reply:well i think you need to put them in soil or water depending on the plant but try putin them in soil and water it every day and they should be fine!
Reply:Sounds like you are doing everything right. The flowers will only last so long once cut. Leaves will not grow back. If they stay looking nice for a week, that is great. You never know how long before you got them they were cut.