This one fits perfectly into a border with deep burgundy colours and I love it! The pace at which Dahlias grow is amazing. The smaller varieties do great in pots and easily outperform pelargoniums. There are adorable ones that also grow quite large, needing substantial support.
Dahlias are definetely not maintenance-free. Leaving them in wet winter soil diminishes them and regular deadheading is essential during flowering. So Dahlias are great for people who do enjoy gardening.