Let’s start with cutting back the orange hibiscus. If the plant has been in the ground for a few years and has healthy roots, you can safely prune it back. It will flush with new growth and put on some size.
Now, for ideas on what you can plant in front. Eternal Sunshine Abelia has colorful leaves and white flowers (2-3’ x 4-6’). For blue flowers, go with Sapphire Sun Caryopteris (2’ x 3’). Reblooming Double Mint Gardenia would be pretty and the flowers are fragrant (2.5-3’ x 2.5-3’). Blue Puffball Vitex blooms June-September (3’ x 3’).
Thanks for writing!