Kumara aren't normally associated with humour, but when Peter Rawstron unearthed one in his garden recently, he just laughed.
When the dirt was cleaned off it, the kumara weighed in at 2kg.
"When I found it I couldn't believe it," he says.
It dwarfs the 500g and 1kg kumara he has already found in his King St garden this year and he thinks it may have grown from a kumara that was missed last year.
"In 10 years of growing them, I've never seen one that big."