Maytime Puzzle Jingle

Flowers are everywhere; that's the reason
Maytime is a favorite season.

Around the rock garden, what do you think?
I found a border of mountain _ _ _ _.

And near the path there lingers still
A yellow, willowy _ _ _ _ _ _ _ _.

Behind the spicy flower stocks
We've planted a row of annual _ _ _ _ _.

And by the pansy bed there grows
A danty little Tom Thumb _ _ _ _.

All these posies make a bouquet
Of our garden, in the month of May.