Monster Pumpkins

Raise a record-breaker!

We’ve given away 100 Monster Pumpkin seeds to Campaign for School Gardening members around the UK (primary and secondary schools only) and we're running a competition to see who can grow the heaviest one in 2018! The seeds were harvested from a 340kg, award-winning pumpkin grown by RHS fruit and vegetable expert, Matthew Oliver.

The competition to win these seeds is now closed, but if you didn't manage to get any of them, you can still try growing a monster pumpkin with your school group this summer!

Get hold of some giant pumpkin seeds of your own (we recommend  'Atlantic Giant' seeds for best results) and follow the advice in our Monster Pumpkins resources (see above, right) for tips and advice on how to grow a whopper!

Share your progress

We'd love to follow your Monster Pumpkin journey! Send pictures to @RHSSchools on Twitter and use #ukgiantpumpkin, or email them to

The Campaign for School Gardening team will be growing a Monster Pumpkin at RHS Garden Wisley this summer. Keep an eye on our Facebook and Twitter pages to see how we get on...

Good luck!

Got some of our Monster Pumpkin seeds?

Read through the Monster Pumpkins competition guidelines and make sure you've understood our terms and conditions.

Looking for advice on growing a Monster Pumpkin?

Check out our handy resources for tips and advice on how to grow a giant:

We've won awards!

Winner of the Drum Marketing Awards 2017
Winner of the ERA 2017 awards
Winner of the Third Sector 2017 awards