Any Guesses

Had this plant for many years but have to say I hadn't noticed this.
We went and got out prescriptions this morning then did a bit of shopping and I went and picked up 2 pots of honey, cant do without that.
Coffee then a walk filled the morning. This afternoon I finished cleaning the garage doors had a facetime chat with no. one son and watered all this wind has dried out the containers.
Another frost this morning most of the dwarf beans look dead, and another forecast for tomorrow hopefully that will be the last and we can get on with gardening. 
The answer is a mulberry lots on the tree this year