Radical 艹
7 strokes
grass 艹 (218a) + change 化 (391) = flower 花
[花园 (302) huā yuán garden]
[种花 (279) zhòng huā to grow flowers]

Rather than just having grass, she wants to change part of her garden into a flower bed. / She employs the ghostly giant to look after the flowers, and he uses his hard hat to protect them from frost.