I am sorry for this delayed reply to your gardening question as we are transitioning to a new Q&A system. I hope this reply is not too late to be of help.
Your question is a bit general in scope for me to be able to provide a specific answer. However some choices that I think may fit what you are looking for include New Gold lantana (plant 2-3 feet apart), perennial hibiscus (plant about 3-4 feet apart), or Wedelia.
Thanks for the question. Please stop in again soon!
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