What mold is this on my grapes, is it harmful?

I have a couple concerns with 2 different plants. The first is some black/grey mold that has grown on the vine itself. It is still early spring but we are getting some moisture this week. This is a 3 year old vine and had mold growing on it, it also almost looks as if the vine has split in a few spots. I can see some moisture leaking out of the cracks. This concerns me that this mold may be getting on the inside. I thought about spraying the vine with some foot powder (antifungal). Is this some mold I need to worry about? Should I spray my vine with foot powder? See picture of outdoor vines.

The second problem is my indoor grape plant. I tried to make a bansai out of it, but the leaves are constantly dying off. I tried to let it dry between watering, I tried keeping it the soil wet, I even tried giving it nutrients with the water. Nothing has cured this leaf problem. Any ideas? See picture of leaves

In the spring as sap begins to rise in the vines any injury and recently pruned tips will drip the  sap which is high in sugar and feeds mold.  The vine may have been twisted and cracked so that it is using the sap. You may find that the mold will just wash off.

Did the plant in the house get to go through a dormant period?  If not it may be trying to go into dormancy.

Thank you for your first post on Permies we will try to share with you from our experience.

No, there was no dormancy. That's interesting.

B O'toole wrote:No, there was no dormancy. That's interesting.

You may try putting it outside in a larger pot or in the ground before the weather starts warming up and give it a chance to start over again.

It looks like the vine outside has a vine without live buds that can be pruned off so that new growth does not entwine it with tendrils making it hard to remove later.

I recommend keeping a record of observations, when buds start to swell/sap is flowing, leaves start to open, fruiting stems appear, fruit starts to develop and ripening.  Leaf fall also is a time to plan your pruning to shape the growth for the next year.  Generally prune back to 2 buds where you do not want to have the vine continue to expand on your trellis system.   I  get the best results by pruning off growth beyond on leaf after a  fruiting spur on new growth in the summer.

The permaculture method is to observe and adapt to your conditions.