Flower Fairies by Cicely Mary Barker - Acorn Fairy

To English folk the mighty oak
Is England's noblest tree;
Its hard-grained wood is strong and good
As English hearts can be.
And would you know how oak-trees grow,
The secret may be told:
You do but need to plant for seed
One acorn in the mould;
For even so, long years ago,
Were born the oaks of old.

There are over 600 varieties of oak found throughout the world.  They thrive in deep, damp, well-drained soil.  They have large root systems and do not like to be transplanted. Propagate from fresh seed or by grafting in late winter just before new buds appear.

Fairy lore tells us that  gnomes live among the intricate root systems of old oaks. Oakmen are created when a felled oak stump sends up shoots, they are the guardians of sacred oak groves.  They are not friendly towards people, but no one has ever been harmed by one.