Answer :
Complete sentence.
Each part by itself is a complete sentence. "The plants are turning brown." and "We need to water them [the plants] more often." Combining them with a semicolon is correct as they are independent of each other.
Each part by itself is a complete sentence. "The plants are turning brown." and "We need to water them [the plants] more often." Combining them with a semicolon is correct as they are independent of each other.