Heidi Viherjuuri Heidi Viherjuuri is a teacher, children’s writer and a blogger, who lives in Germany. She grew up in a small village in the Finnish countryside – just like Hilja. Author page Author webpage Author Facebook Bibliography Heidi Viherjuuri Hello, Hilja here 2019, Chapter Books (6-9 Years) Heidi Viherjuuri Hilja and the Operation Christmas Magic 2019, Chapter Books (6-9 Years) Heidi Viherjuuri Adventure calls, Hilja 2018, Chapter Books (6-9 Years) Heidi Viherjuuri Hilja's Summer in the Green House 2017, Chapter Books (6-9 Years) Related news 02.10.2020 Estonian rights sold to HILJA’S SUMMER AT THE GREEN HOUSE