Contenders are working on a final plumpening for their pumpkins, as vege patches across Clutha swell with pride.

The seventh annual South Otago A&P Giant Pumpkin Day is coming up this Sunday, from 11am onwards, and local youngsters are gearing up to bring their prized pumpkins along for a chance to win.

Pumpkin seeds were handed out to entrants in October and the community’s outsized efforts will be unveiled at the competition.

Non-regulation giant pumpkins which were not grown from the provided seeds would also be accepted into the competition for a $10 entry fee.

Matthew Law, of Kaitangata, said sons Oliver and Austin were looking forward to bringing their entries along.

‘‘It will be interesting to see the competition when we get there,’’ Mr Law said.

‘‘It’s like a secret society. Everyone who enters keeps the progression of their pumpkin under wraps and doesn’t let anyone know how they’re growing their entry.’’

Last year’s biggest pumpkin was Balclutha man Daniel Wark’s 56kg beast.

The competition also involves a range of giant fruit and vegetable categories.

South Otago A&P Society president Bridget Lowry said the main goal was to put on a great day for local families to enjoy as autumn set in.

The day’s events included several activities, ranging from gumboot throwing, giant Jenga and Connect Four, to painting ponies and colouring competitions, Mrs Lowry said. The A&P Society will incorporate its annual hay and baleage competition.

‘‘Our main goal is to give everyone the opportunity to . . . have fun,’’ Mrs Lowry said.

‘‘My motto has always been ‘making memories for the whole family’.’’

This summer’s A&P Show Queens will provide a warm welcome at events, including a market fair with more than 21 food and craft stalls.