Little vegetation grows on these islands, which are subject to intense monsoons. Larger islands are capable of supporting tropical forest, scrub forest, coastal scrub and grasses. It is difficult to determine which species have been introduced or cultivated by humans. Taiping Island (Itu Aba) was reportedly covered with shrubs, coconut, and mangroves in 1938; pineapple was also cultivated there when it was profitable. Other accounts mention papaya, banana, palm, and even white peach trees growing on one island. A few islands which have been developed as small tourist resorts had soil and trees brought in and planted where there was none.