Master Gardener Eric Johnson shared his passion for heirloom tomatoes, which are considered the crown jewels of summer gardens. He discussed what makes these vibrant and flavorful treasures so special.

Further details about heirloom tomatoes are available from Minnesota Live, which featured Johnson's insights.

Johnson is a contributor to Northern Gardener Magazine, and his discussion on heirloom tomatoes can be found on KSTP.com 5 Eyewitness News.