Bayer seems to have changed the formulation of both products for the spring season by reducing the amount of primary insecticide while adding a second one. Unfortunately, they have both products on their web site and I've only found the new one in stores. Some of the on-line vendors have either a lot of "old" product on hand or they have not updated pictures, labels, MSDS, etc. I guess that will be sorted out later. I'm not familiar with the second insecticide, but I am pretty sure Bayer wouldn't put out a new formulation unless it works comparably to the old one and it probably saved them a buck or two as well.
As for the difference between the two products: #1 - the "Tree and Shrub" product is much more concentrated - - that is, it has more insecticide per unit weight than the product for roses. It has 0.55% imidacloprid plus 0.275% clothianldin while the rose product has 0.15% and 0.05% respectively. #2 - the rose product contains a fungicide (tebucanozole at 0.8%) while the tree product does not. #3 - the tree product contains a 2-1-1 fertilizer while the rose product contains a 6-9-6 fertilizer. These values are dealing with the granular products. #4 - the tree product is recommended for use once in 12 months while the rose product is recommended to be applied every 6 weeks.
