A is for (whoever gets Z starts the next theme)

[twyngwyn]

Grows on a tree

A is for Almond

[purple_haize]

O is for Oak tree

[crosbystills]

P is for Pine

[purple_haize]

Q is for Quince tree

[crosbystills]

R is for Redwood

[peteepie]

S is for sapling

[electric*mayhem*band]

T is for Tulip Tree.

[purple_haize]

U is for Ulmus Glabra tree

[twyngwyn]

V is for Virginia Pine

[purple_haize]

W is for Willow tree

[electric*mayhem*band]

-X

Y is for Yew.