Few annual bedding plants live up to its names as does Busy Lizzie. All the many colours and hybrids make them the choice for every occasion and they grow happily the full range from sun (a bit of extra watering required) to shade (only bit les busy, if you catch my drift).
If you are a little bored of growing them, plant just one single plant in your favoured colour or a few plants well spaced which will have a huge effect on their own too, instead of filling entire beds with them to make a great impact.
Maybe I am a little over protective, it’s just, as I was growing up, I use to keep them, in a Sub-Tropical micro climate on the North facing slope (think Southern hemisphere!) of the Magalies Berg, where they were perennial. Yes, as a result the plants got very big and by the time the season ended they were huge and on top of that they would overwinter in sheltered areas, so I guess, here in London England I feel a bit sad to see them die back in their masses when winter arrives..
You cannot help but love them!