Ernie Janes / Pumpkins (Cucurbita sp) ready for Harvest, Norfolk, UK, October

Jouan Rius / Large courgette / marrow (Cucurbita pepo) growing in vegetable garden, France, August 2013.

Jouan Rius / Large courgette / marrow (Cucurbita pepo) growing in vegetable garden, France, August 2013.

Christophe Courteau / Organic Butternut squash (Cucurbita moschata)

Cyril Ruoso / Pumpkin (Cucurbita pepo) growing in organic garden tended to by inmates as part of Sustainability in Prison program, Cedar Creek Corrections Center, Washington, USA. September 2012.

Gary K. Smith / Wooden trug with freshly harvested home grown green and yellow courgette (Cucurbita pepo) varieties, Norfolk, England UK. July

Pal Hermansen / Variet of Pumpkins and squashes (Cucurbita pepo) Norway, August.

Pal Hermansen / Halloween decorations including pumpkins (Cucurbita pepo) outside house, outskirts of Minneapolis, USA.

Pal Hermansen / Seed of Pumpkin (Cucurbita pepo) on white background

Paul Harcourt Davies / Courgette flower (Cucurbita pepo) Podere Montecucco, Orvieto, Umbria, Italy, August.

Jean E. Roche / Polytunnel with courgettes growing, Cidamos gardens, Alpilles, France, October 2012.

Jean E. Roche / Butternut squash (Cucurbita moschata) Cidamos gardens, Alpilles, France, October.

Paul Harcourt Davies / Flowers of Courgette / Zucchini (Cucurbita pepo) - male with stamens visible, in a garden near Orvieot, Umbria, Italy

Kerstin Hinze / Various types of Pumpkins at Pumpkin fair. Lower Saxony, Germany, September.

Kerstin Hinze / Frog made out of green pumpkins (Cucurbita), Curcurbitaceae. Pumpkin fair. Lower Saxony, Germany, September.

Jouan & Rius / Ambercup 'Red curry' and Pumpkins 'Rouge D'etampes' (Cucurbita sp) in garden, France

Jouan & Rius / Ambercup 'Red curry' (Cucurbita sp) pumpkin in garden, France

Jouan & Rius / Ambercup 'Red curry' and Pumpkins 'Rouge D'etampes' (Cucurbita sp) in garden, France

Jouan & Rius / Ambercup 'Red curry' and Pumpkins 'Rouge D'etampes' (Cucurbita sp) in garden, France

Jouan & Rius / Pumpkins 'Rouge D'etampes' (Cucurbita sp) in garden with Domestic cat sitting nearby, France

Nick Turner / Variety of Pumpkins (Cucurbita maxima) close up shot, UK.

Nick Turner / Turks turban pumpkins (Cucurbita maxima) close up shot, UK.

Nick Turner / Baby bell pumpkins (Cucurbita maxima) close up shot, UK.

Nick Turner / Baby bell pumpkins (Cucurbita maxima) close up shot, UK.

Nick Turner / Baby bell pumpkins (Cucurbita maxima) close up shot, UK.

Gary K. Smith / Commercial Pumpkin (Cucurbita maxima) crop, grown for the UK Halloween market, Norfolk, UK, October

Gary K. Smith / Commercial Pumpkin (Cucurbita maxima) crop, grown for the UK Halloween market, Norfolk, UK, October

Larry Michael / Crop of harvested Pumpkins {Cucurbita maxima} USA

Gary K. Smith / Gardener planting out Pumpkin plants {Curcurbita pepo} 'Kuri' variety on allotment, UK, June

Gary K. Smith / Gardener planting out Pumpkin plants {Curcurbita pepo} 'Kuri' variety on allotment, UK, June

Larry Michael / Pumpkin Plant {Cucurbita maxima} with ripe fruit / vegetable, Wisconsin farm, USA

Jose B. Ruiz / Close-up of Pumpkin plant flower {Cucurbita pepo} Spain.

Dan Burton / Pumpkins {Cucurbita maxima} France.

Dan Burton / Pumpkins {Cucurbita maxima} France.

Nigel Cattlin / Pumpkin (Cucurbita pepo) seeds taken from a fresh ripe pumpkin fruit.

Kerstin Hinze / Decorative Pumpkins {Cucurbita pepo} "Hokkaido" and "Uchiki Kuri", Germany

Kerstin Hinze / Pumpkins {Cucurbita pepo} "Heart of Gold F1", Germany