The lupine is now in its glory.

The lupine is now in its glory. It is the more important because it occurs in such extensive patches, even an acre or more together, and of such a pleasing variety of colors, - purple, pink, or lilac, and white, - especially with the sun on it, when the transparency of the flower makes its color changeable.

It paints a whole hillside with its blue, making such a field (if not meadow) as Proserpine might have wandered in. Its leaf was made to be covered with dewdrops.

I am quite excited by this prospect of blue flowers in clumps with narrow intervals. No other flowers exhibit so much blue. That is the value of the lupine.  The earth is blued with them.  

You passed along here, perchance, a fortnight ago, and the hillside was comparatively barren, but now you come and these glorious rededemers appear to have flashed out here all at once. Who planted the seeds of lupines in the barren soil? Who watereth the lupines in the fields?

H. D. Thoreau, Journal,  June 5, 1852