What are these bubbles?

[b87lar]

Beginner gardener here. Can you help identify these deposits on grape wine shoots (see pics) - are these something to worry about?

 

[Chuck]

They look like guttation droplets. It is caused by too much water. In essence, the plant has too much water pressure built up inside the plant and this is a plants relief mechanism. They are not exactly water droplets however, xylem in the plants tissues have changed the water into those little bubbles of sticky sap.

 

[b87lar]

They look like guttation droplets. It is caused by too much water. In essence, the plant has too much water pressure built up inside the plant and this is a plants relief mechanism. They are not exactly water droplets however, xylem in the plants tissues have changed the water into those little bubbles of stick sap.

I see - will reduce watering duration. Thank you!