I don't really think any information of this type from the custom rose DB can or should be added to the general section. For one thing, the size ranges for rose blooms are completely different (under 2"; 2-3"; 4-5"; 6" or over). For another, the flower form information would just add unnecessary confusion. The term "single" in the rose world means "fewer than 8 petals." The bloom size, shape, petal count, and clustering or non-clustering data are already in the custom section of the info form and don't really have to be repeated in the general section. Only some types of data do have to be repeated (hardiness zones, bloom colors, bush height, etc.) and they already are repeated.
Besides, people know what a rose looks like and they know the approximately size of a rose. As I understood it from Woofie's original request, this information will be useful to people who don't know anything about the bloom. If, for instance, I want to avoid plants with spikes of blooms, I'll appreciate the "warning."