This is the 3531st most frequent Japanese word.
苺
Strawberry.
Here, '苺' (ichigo) is used as the subject noun, referring to strawberries generically as they are loved.
苺が大好きです。
I love strawberries.
Here, '苺' is used as an adjective-like descriptor, specifying the type of cake (strawberry-flavored or containing strawberries).
苺ケーキを食べました。
I ate a strawberry cake.
In this context, '苺' acts as an object of the action '育てています' (growing), describing what is being cultivated.