Why do many tropical and subtropical plants adapt well to indoor spaces?

Many tropical and subtropical plants are well-suited for indoor environments because they have evolved or been selected for their ability to adjust to the specific conditions found in human living spaces. While some exotic species require specialized environments like a terrarium or conservatory, many popular houseplants are specifically valued for their capacity to endure the dry heat and low light intensity that typically prevail indoors.12

These plants are generally native to warm, frost-free regions, making them ideal for cultivation in portable containers within colder climates. Because they can thrive in these relatively warm and dry conditions, they are considered the best indoor subjects, often requiring less maintenance than more demanding flowering species. Many of these plants, such as certain palms or the Norfolk Island pine, are also favored for their sturdiness and ability to remain long-lived even in dim or cooler indoor locations.13