Whiff Erik and the Great Green Thing

Set in the Viking world of long boats, looting and grand adventure,
The Goose Pimple Bay Sagas relate the hilarious tales of a ruling family
with a difference.
In book two, Whiff Erik, now ruler of Goose Pimple Bay discovers his
brother, Spike Carbuncle at sea. He's escaped from his wife's island
and he's taken a rare seed with him. Back at home, Whiff Erik plants
the seed, but it's not long before a gigantic plan blots out the sky
and a great green thing appears in the leaves. Oh dear, Whiff Erik
knows they're in big, big trouble…