As Bio Advanced All-In-One Rose and Flower Care is not labeled as safe to use on edible vegetation, we would advise that you not eat the treated peaches, and recommend that you contact the manufacturer directly for further questions and product support.
Bio Advanced can be reached by either calling 1-877-229-3724, or by visiting their website's contact page here.
You will want to wait until the rose bushes have bloomed before adding fertilizers like Bio Advanced All-In-One Rose and Flower Care.
For new plants, you could use an organic starter fertilizer labelled for roses such as Ferti-Lome Fish Emulsion Fertilizer 5-1-1.
Bio Advanced All-In-One Rose and Flower Care is labeled for Scales (including Armored Scale [suppression] and Soft Scale), but states on the label "For outdoor residential use only".
You can refer to our informative article on How to Care for Indoor Plants for information on treating scale on your indoor plants, and for links to related products, such as Hi-Yield Systemic Insect Granules.
Bio Advanced All-In-One Rose and Flower Care is labeled for flowers but does not specifically list clematis vine (leather flower). We would recommend contacting Bayer directly at 877-229-3724 for confirmation if this can be used on the species of flowers you want to treat.
According to the product label, you can reapply Bio Advanced All-In-One Rose and Flower Care every 6 weeks for a total of 3 applications per year. In areas where disease occurs frequently and the soil is sandy, the application interval can be shortened to 4 - 5 weeks for a total of 4 applications per year. We are unsure of the other product you are referring to, but if it is also a Bio Advanced product, you can contact them directly for product support by either calling 1-877-229-3724 or visiting their website's contact page here.