Good evening, everyone, I'm new to the forum, but hoping that the local experts can shed some light on a disheartening situation. Two years ago when my grandmother passed away, we took a cutting of her immense grape vine and planted it in an EarthBox at our house. That summer and the following one it grew somewhat weakly and did not produce any grapes. However, this spring in seemed to flourish, and we were delighted to find three small clusters growing among the leaves. Unfortunately, in the past two weeks I noticed that a few of the leaves were starting to turn yellow, and then brown. The problem is now impacting more and more of the leaves, and I'm worried that the plant will wither away before the grapes can mature. (My hope had been to harvest the grapes to seed new vines.) I've read through many webpages on the yellowing of grape vine leaves. Either the symptoms don't seem to match, or they match more than one conflicting remedy (under/over watering). So, I'm at a loss as to how I can best intervene. If anyone in the community has any ideas, I'd be very grateful for your feedback. I've attached a couple of photos to help with the assessment.