Does anyone know the Title of the Poem that has the line 'splendor in the grass?

Answer 1

It is from Ode: Intimations of Immortality from Recollections of Early Childhood. Too long to copy here:

What though the radiance
which was once so bright
Be now for ever taken from my sight,
Though nothing can bring back the hour
Of splendour in the grass,
of glory in the flower,
We will grieve not, rather find
Strength in what remains behind;
In the primal sympathy
Which having been must ever be;
In the soothing thoughts that spring
Out of human suffering;
In the faith that looks through death,
In years that bring the philosophic mind.

-- William Wordsworth

Answer 2

The title of the poem is "Ode on Intimations of Immortality From Recollections of Early Childhood."

Almost as long as the poem.