Probably she is boasting & saying that she has money & is livin good in fancy places u know how Miami, Hawaii & the Carribean & places like that are expensive & have palm trees & pools everywhere cuz b4 that line she says "I get money so I do what I please'z" then after that line she says "broke bitches so crusty disgust me"
Agreed.
Pools = tropical
"Trees" can have triple meaning.
1. Green meaning money.
2. Tropical place
3. Weed, high.. high life ect