a. Laburnum tree is a type of flowering tree known for its vibrant yellow flowers that hang in long clusters, resembling golden rain. It is a short ornamental tree with hanging branches, yellow flowers and poisonous seeds b. The season mentioned in the poem is September, specifically referring to the transition from summer to autumn. c. The seeds of the laburnum tree have fallen, indicating that they have dropped from the tree and are no longer attached. The leaves are described as yellowing, suggesting that they are in the process of changing colour and nearing the end of their life cycle. d. The state of the tree is silent and still. It is depicted as motionless and tranquil, with no apparent signs of activity. e. The poem takes place in the afternoon. The mention of yellow September sunlight implies that it is a sunny day in late summer, likely during the latter part of the day