Did you know you could propagate roses? What a frugal way to have a beautiful garden! (FYI if a plant is patented or trademarked you can't legally reproduce them via cuttings.) DIY Saturday @ A Cultivated Nest
Spraying epsom salt on plants boosts magnesium supply to plants and increases yield. GARDEN HACK: How to start maintaining your garden. Spraying 1 table spoon of epsom salt mix with 4 litre of water twice with 10 days gap could be used for good results. Use for growing tomatoes, peppers and roses
Step by step instructions on how to propagate roses from bouquet cuttings. Apparently you should not expect a high success rate though, other sites I've read state a 50%-75% failure rate for such cuttings, simply due to the nature of having been grafted, cut, shipped, and in water without a ton of nutrients to compensate.