The author of "Sustainable Gardening for Florida", Ginny Stibolt lives in your neck of the woods and this book out of the UF press will be full of useful information for you. She has written a few others.

@Olliepuppy There are a lot of Florida native plants that are very much drag-and-drop that work well on the Treasure Coast. My knowledge base is strongest in palms and tropical plantings.

For large hardwoods, it is hard to beat live oak. If you like a more tropical look, the native Ficus aurea will give you a native plant with a Banyan look. They do seed a lot once they reach reproductive age though.

Florida native palms: Sabal palmetto (moderate to large, solitary), Sabal etonia (now includes Sabal miamiensis, low grower), Sabal minor (small size, solitary), Rhapidophyllum hystrix (small, clumper), Roystonea regia (large size, statement palm), Acoelorraphe wrightii (clumping, more vertical growth), Serenoa repens (thick clumper), Pseudophoenix sargentii (small to moderate size), Thrinax radiata (Moderate size, solitary), Coccothrinax argentata (Moderate size, solitary), Leucothrinax morrisii (Moderate size, solitary)

There are native cacti and cycads as well. If you grow primarily natives, you won't have to concern yourself with fertilizers or pest treatments.