What imagery does Stephen spender show in the poem your parents?

In the poem "Your Parents" by Stephen Spender, the poet uses imagery of the parents as "two weeds" in a garden, emphasizing their unassuming and overlooked nature. He also depicts them as "two wooden beams" which suggests a sense of solidity and support that they provide. These images convey a sense of humility and strength in the portrayal of the parents.