The Q&A Archives: Grape Vines With Little Clear Droplest On Stems

Question: I have a bonsai grape vine plant that is doing very very well. Recently i've noticed that on various parts of the vine and around the stem of the leaves, there is tiny little droplets. Its a tiny, perfectly round clear substance. My question is: Is this a normal cycle of the plant or could it be some sort of egg sac. They are are not clustered together, spread throughout the vine and vary in size.

Thanks for your help.

Answer: The droplets are caused by turgor pressure. As roots take up fluids, they move throughout the tissues of a plant, filling the cells with water and salts. Cells can and will squeeze out excess fluids, or they'd become so inflated that they would burst. What you're witnessing is common with grape vines, especially early in the season when the plant is about to go into a vigorous period of growth. It's normal and natural - nothing to worry about. If your grapevines were outdoors and were pruned in early spring, they'd pour out copious amounts a liquid from every pruning cut. It's annoying, but not harmful at all to the plant. Eventually the weeping will stop on its own.

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