Chant as a rhyme or sing to tune Ram Sam Sam

A Douglas fir, a Douglas fir, (stand tall, hands up together forming a point)
A tiny little mushroom (crouch down into a tiny ball)
And a Douglas fir (stand tall)
A Sword fern! A Sword fern! (jump to the left, jump to the right, at the same time bringing your hands up in an arc like the fronds of a fern)
A tiny little mushroom (crouch down)
And a Douglas fir (stand tall)

This version from Story Time Idea Machine blog (2010) by Cherie Rainwater.

Variant: A Pizza Hut

Chant as a rhyme or sing to tune Ram Sam Sam

A Douglas fir, a Douglas fir, (stand tall, hands up together forming a point)
A tiny little mushroom (crouch down into a tiny ball)
And a Douglas fir (stand tall)
A Sword fern! A Sword fern! (jump to the left, jump to the right, at the same time bringing your hands up in an arc like the fronds of a fern)
A tiny little mushroom (crouch down)
And a Douglas fir (stand tall)

This version from Story Time Idea Machine blog (2010) by Cherie Rainwater.

Variant: A Pizza Hut