totally random question!

[freakinmental]

you know when u wake up singing a song in ur head and u wonder where the hell it came from cos u havent heard it for ages.... well i woke up this morning singing a little poem from a book from when i was little. i can only remember the first 2 verses so i searched for it on the internet and i cant find it anywhere, so i thought i wud ask on here and on facebook to see if anyone knows the poem.

'Mr Samuel Flowerbutts is the smallest man i know, but whatevers in his garden seems to grow and grow and grow.

His onions are like footballs and his marrows are a size and his hollyhocks go reaching up as if to reach the skies.'

If anyone remembers this poem and/or what book it was from let me know please!