* As an adjective: "Botanical" is generally lowercase when used as an adjective describing something. For example: "The museum has a beautiful botanical garden."
* As a noun: When "botanical" is used as a noun referring to the study of plants, it is capitalized. For example: "She studied botany in college."
* As part of a proper noun: If "botanical" is part of a proper noun, it should be capitalized. For example: "The Botanical Garden of New York."
Examples:
* Lowercase: botanical gardens, botanical specimens, botanical illustrations
* Capitalized: The Botanical Society of America, the Royal Botanic Gardens, Kew
Let me know if you have any more examples you'd like help with!