My blooms lasted for 3 weeks with this copper heart. It’s not only so beautiful, but it miraculously works! I could not believe how long the flowers my husband sent lasted. I usually get 1 week at best with plant food. With precious petal I got 3 weeks! Yes, some flowers didn’t make it as long (like a rose which would never last 3 weeks, but they lasted longer than I ever thought a rose could last!). What I did was slowly pull out the flowers that were wilting over a LONG time and replace them with some fresh supermarket flowers. It looked like a brand new arrangement. Make sure you keep the water levels up. With the heat on in the cold temps that also can kill an arrangement. If I had the patience i know you are supposed to fully empty the water, cut the stems a bit, then replace the water with new, but the arrangement was so full, I would never be able to put it back the same way, I would make a mess, and I am swamped with work I just don’t have the time. If you do, hats off and I would bet you would get a month out of your arrangement with precious petals! I ordered this on a whim. I love flowers and I don’t care if they come from the street, supermarket, bodega, or a florist. Having fresh blooms around make me calmer and happier. I was actually searching for a box of plant food when I stumbled across the product and read reviews and am so happy I bought 3 of them. I’ve already ordered one for my mom, grandmother, and sister too. I am not being paid for this review, I am actually still in shock at how well this simple little copper heart worked so well I felt like it warranted a 5 star review. A+product!