The inspiration for the poem came from a walk Wordsworth took with his sister Dorothy around Glencoyne Bay, Ullswater, in the Lake District.[7][8] He would draw on this to compose "I Wandered Lonely as a Cloud" in 1804, inspired by Dorothy's journal entry describing the walk:[8]
Ullswater in the English Lake District. Ullswater from Gobarrow Park, J.M.W. Turner, watercolor, 1819
  When we were in the woods beyond Gowbarrow park we saw a few daffodils close to the water side, we fancied that the lake had floated the seed ashore and that the little colony had so sprung up – But as we went along there were more and yet more and at last under the boughs of the trees, we saw that there was a long belt of them along the shore, about the breadth of a country turnpike road. I never saw daffodils so beautiful they grew among the mossy stones about and about them, some rested their heads upon these stones as on a pillow for weariness and the rest tossed and reeled and danced and seemed as if they verily laughed with the wind that blew upon them over the Lake, they looked so gay ever glancing ever changing. This wind blew directly over the lake to them. There was here and there a little knot and a few stragglers a few yards higher up but they were so few as not to disturb the simplicity and unity and life of that one busy highway – We rested again and again. The Bays were stormy and we heard the waves at different distances and in the middle of the water like the Sea.[9]
  — Dorothy Wordsworth, The Grasmere Journal Thursday, 15 April 1802
At the time he wrote the poem, Wordsworth was living with his wife, Mary Hutchinson, and sister Dorothy at Town End,[Note 1] in Grasmere in England's Lake District.[7] Mary contributed what Wordsworth later said were the two best lines in the poem, recalling the "tranquil restoration" of Tintern Abbey,[Note 2]
  They flash upon that inward eye
  Which is the bliss of solitude
Wordsworth was aware of the appropriateness of the idea of daffodils which “flash upon that inward eye” because in his 1815 version he added a note commenting on the "flash" as an "ocular spectrum". Coleridge in Biographia Literaria of 1817, while he acknowledged the concept of "visual spectrum" as being "well known", described Wordsworth's (and Mary's) lines, amongst others, as "mental bombast". Fred Blick[10] has shown that the idea of flashing flowers was derived from the "Elizabeth Linnaeus Phenomenon", so-called because of the discovery of flashing flowers by Elizabeth Linnaeus in 1762. Wordsworth described it as "rather an elementary feeling and simple impression (approaching to the nature of an ocular spectrum) upon the imaginative faculty, rather than an exertion of it..."[11] The phenomenon was reported upon in 1789 and 1794 by Erasmus Darwin, whose work Wordsworth certainly read.
The entire household thus contributed to the poem.[12] Nevertheless, Wordsworth's biographer Mary Moorman, notes that Dorothy was excluded from the poem, even though she had seen the daffodils together with Wordsworth. The poem itself was placed in a section of Poems in Two Volumes entitled "Moods of my Mind" in which he grouped together his most deeply felt lyrics. Others included "To a Butterfly", a childhood recollection of chasing butterflies with Dorothy, and "The Sparrow's Nest", in which he says of Dorothy "She gave me eyes, she gave me ears".[13]
The earlier Lyrical Ballads, a collection of poems by both himself and Samuel Taylor Coleridge, had been first published in 1798 and had started the romantic movement in England. It had brought Wordsworth and the other Lake poets into the poetic limelight. Wordsworth had published nothing new since the 1800 edition of Lyrical Ballads, and a new publication was eagerly awaited.[14] Wordsworth had, however, gained some financial security by the 1805 publication of the fourth edition of Lyrical Ballads; it was the first from which he enjoyed the profits of copyright ownership. He decided to turn away from the long poem he was working on (The Recluse) and devote more attention to publishing Poems in Two Volumes, in which "I Wandered Lonely as a Cloud" first appeared.[15]
Explanation:
