I find much better take macros of flowers without tripod. You need to go around and find the best place and light.
I do that too – then I put the camera onto the tripod. Good flower shots without one are generally more difficult, and some are impossible handheld. Composition, focus, sharpness – all are generally better with a tripod. Plus – it slows you down so more time to think before you act.
I use a Manfrotto 055MF3 (I think that’s the name) with a ballhead and L-bracket. Fairly good combination – the main complaint is that the legs don’t lock at some shallow angles which can be quite annoying. But, they will go out flat to the ground. Whatever you get, an L-bracket and Arca-Swiss style quick-release clamp are very useful.