If you like that sort of thing, and you´re ever in the Netherlands in the spring, you should visit the “keukenhof” (roughly translated as “kitchen park”) Keukenhof.

I WANDERED lonely as a cloud
That floats on high o’er vales and hills,
When all at once I saw a crowd,
A host, of golden daffodils;
Beside the lake, beneath the trees,
Fluttering and dancing in the breeze.

Continuous as the stars that shine
And twinkle on the milky way,
They stretched in never-ending line
Along the margin of a bay:
Ten thousand saw I at a glance,
Tossing their heads in sprightly dance.

The waves beside them danced; but they
Out-did the sparkling waves in glee:
A poet could not but be gay,
In such a jocund company:
I gazed–and gazed–but little thought
What wealth the show to me had brought:

For oft, when on my couch I lie
In vacant or in pensive mood,
They flash upon that inward eye
Which is the bliss of solitude;
And then my heart with pleasure fills,
And dances with the daffodils.

Perhaps?
San Francisco > Schiphol > Keukenhof
Schiphol > Exeter > Cornwall & Isles of Scilly
O’h and for a nice little bonus you could also visit Merlin’s Cave at Tintagel.

…search, daffs and caves, looks like a European tour is in order next year

Back on topic, here is West Oz we have a beautiful display of our Native Wildflowers every Year. They even run tours where people travel by Coach for many hours just to take photos. Quite amazing considering these Wildflowers bloom in one of the driest parts of the World.