I have a rose bush that is over three years old. The bush is beautiful, full, thick, and green, but it has never once blossomed. I am not 100% sure if it has grown from a seed or not. I had a row of many rose bushes against the house that I dug up and transplanted. I was letting the roses expire and produce seeds and I was also cross pollinating them. Quite sometime after transplanting all the roses, I noticed a small rose bush spring up out of the ground where the other roses used to be. I am not sure if a seed dropped or if it grew off of something that may have been left behind under the ground durring transplanting. I have it in a large pot that drains well in Miracle Grow soil. I fertilize according to package instructions. I have another rose bush that I care for the same way, it is fertilized in the same manner and is in the exact same soil and is always full of flowers. The bush is in full sunlight and is never shaded. The bush is actually one of the most beautiful rose bushes that I have ever seen except it has never produced a single rose, just a bush with thorns. Can anybody help me? How mature does roses have to be before they blossom. Is this bush ever going to blossom? All the bushes that were there prior to it springing up bloomed all year long. Any help would be so apperciated. My husband, myself, and four little children look at it everyday, waiting and wondering.