Does this plant bloom in waves like a knock out rose? Mine looks like all the blooms are faded and new ones are few and far between.
Regarding Lantana, Does It Need to Be Trimmed Occasionally?
There are different cultivars with different habits. No reason not to trim yours, it might stimulate flowers. This article presents some aspects of lantana pruning: https://www.gardeningknowhow.com/ornamental/flowers/lantana/lantana-pruning.htm