Grow a Giant Watermelon Challenge Posted on 8 Jan 04:38 , 5 comments

January 2023

Happy New Year!

There has been a "growing" interest in new garden challenges at Mary's Heirloom Seeds. Growing watermelons in the garden is fun and easy so we'll start with the challenge of growing the largest watermelon.



Did you know that the world record for the largest watermelon grown to be one of ten giant fruit harvested in 1990 in Arrington, Tennessee, by Mr. Bill Carson and weighing 262 pounds (118.7 kg). Previously, Mr. Middlebrooks near Hope, Arkansas, held the Guinness record with a 195 pound watermelon grown in 1935. The record stood for 44 years until the Bright family, also from Hope County, Arkansas, produced a 200 pound fruit in 1979. and a 260 pounds one in 1985.

Carolina Cross Watermelon is the recommended variety if you are looking to grow the largest watermelon. This variety can grow up to 200 pounds (or larger. The Florida Giant Watermelon is another great watermelon that averages about 50 pounds per melon.

Would you like to join us?

Here's how it works. This is going to be a fun contest with prizes at the end of the season.

-Seeds must be purchased from Mary's Heirloom Seeds

Recommended but not mandatory varieties are:


-Seeds must be grown in 2023 since the contest ends in November 2023

-Please register with us as soon as possible via email to with the subject "Grow a Giant Watermelon Challenge"

-There will be a check-in posted once a month at Mary's Heirloom Seeds if you would like to comment and share your "growth" throughout the challenge.

-This challenge is open to residents of the US and Canada

-Take pictures! We love to see your gardens and this is a great way to share your progress

-Have fun!

Please feel free to leave a comment below.

If you have additional questions, please feel free to ask!