Holtze is a locality in Darwin, Northern Territory, Australia. It is 22 km southeast of the Darwin CBD. Its local government area is the Municipality of Litchfield. The locality is mostly a rural area, just north of Palmerston. It was named for Maurice William Holtze, the botanist who established Darwin's Botanical Gardens, and his son Nicholas, who succeeded hi…Holtze is a locality in Darwin, Northern Territory, Australia. It is 22 km southeast of the Darwin CBD. Its local government area is the Municipality of Litchfield. The locality is mostly a rural area, just north of Palmerston. It was named for Maurice William Holtze, the botanist who established Darwin's Botanical Gardens, and his son Nicholas, who succeeded him as curator.