Wordsworth has a very keen imagination. The opening of the paragraph carries the image of the child in the thunder shower (line 300) to that of the sowing of fruitful seed. The stress on the words “seed-time” indirectly creates an idea that nature’s education includes fear. It is a very special kind of fear that Wordsworth is describing, and his choice of this particular example carried marked contrasts to the previous scene in the poem.
Wordsworth recollects his childhood memory of spending time at Hawkshead School in 1778. He tells the reader about his happy times spent at his grammar school and how he was more alive their than anywhere. He still had great freedom while there in school. He is saying that my growth was much favored in my birth place, which was a beautiful lake in the district of England and also in that valley to which I was soon transplanted. Here “Transplanting to valley” is referring to his memory when Wordsworth was transplanted to Hawkshed Grammar School. He also elaborates what kind of freedom one has when they are children and how one gets bound by society’s conventions once you are old.