Mark is busy with the vineyard crew performing shoot thinning and dropping fruit. It's a difficult time because dropping fruit is the hardest part of the growing season for Mark.
Grape vines naturally produce more grapes than the vine can ripen fully each year. So, at some point during the year, healthy grape clusters must be cut and thrown to the ground, where they become organic material that feeds future harvests.
For Mark, dropping fruit is tough love - choosing which grapes will thrive and become wine. If the grapes are left untouched on the vine until harvest, many would not ripen fully. Ripe grapes make the best wine. So, growing quality wine demands that some fruit must be sacrificed - and dropped.
When a grape grower has dropped the perfect amount of fruit, it is called "keeping the plant in balance".