Another thing to keep in mind when considering whether to add petals, buds or crushed leaves to the soap batter (besides discoloration) is the messy factor when bathing/showering with the finished bars.
I once made a soap with calendula petals in it, and while visually appealing at first (they did turn tan on me over time in spite of what I had heard), I really didn't appreciate the petals mucking up my shower and flowing down my drain. My hubby didn't either, and I decided then and there to never add physical/tangible botanicals to any of my soaps.........
Buuuuut wouldn't you know it that I'm currently using a handmade soap scented with mint E.O. & sprinkled with mint leaves that I bought when on vacation over the summer (I know, shame on me
)....... I bought it in spite of the crushed mint leaves on it & in it because I
love mint scented soap and because I like buying others handmade soap while on vacation if I can find any, but now that I'm actually using it, I'm clearly reminded of why I had decided earlier to never use physical/tangible botanicals in soap.
The mint leaves (which have turned brown since I bought it in June) are sooooo messy. They get on everything and are difficult to rinse off. If it wasn't for the fact that the actual soap itself lathers nice, feels great on my skin and smells delightful, I'd throw the bar away because of how annoying the leaves are.
Just something to consider.
IrishLass