Just as the name suggests, Oso Easy Roses are oh so easy to grow in the garden! Proven Winners has spent years searching for roses that are disease resistant and can be grown just like any other shrub. To make the cut, each rose had to show that it could stay disease-free for at least four years. Thirteen roses qualified. That means every rose in this series does not need to be sprayed and will not develop leaf diseases. This new class of roses does not skimp on blooms or color. You can enjoy luscious roses with little effort or extra maintenance. You're welcome!