Plant ID in Central Florida

Question

Need help identifying volunteer plants. I live beachside in Daytona Beach & have two plants/trees or ? that showed up. I have no idea what they are, their care or even if I should keep them. The spikey one is slow growing & the tree/shrub is a fast grower. Any help is greatly appreciated.

• 
• 

Answer 1

It appears that the taller one is some kind of hibiscus. The shorter one is harder to identify, because it looks like so many different things. Does the small one have a particular smell to it?

Here is an article about hibiscus care: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm