Analysis of The Charm

LIKE crimson lamps the tulips swing,
The lily flowers their incense bring,
The daisies votive garlands fling
Before the altar of the Spring.

And you and I in this green May,
When thrushes sing, and white lambs play,
Go glad at heart--so glad and gay,
No word seems good enough to say.

Yet there's a charm, it would appear,
Which, if I spoke it in your ear,
Would fix the spring for ever here;
Pass on--I will not speak it, dear.