It is normal when the plant is not in full dormancy. The thicker the canes the more this is noticeable. Some people are of the opinion that it helps heal the wound faster and discourages fungal infections. It will eventually stop.

Nik, thanks, I was wondering if it was something normal. No, nothing is dormant here at all, we've had record heat! And it was already putting out new canes. Thanks.

Roseseek, thanks, It's been rainy but will be dry by tomorrow, and I'll see if it's still weeping. If so, I have plenty of wax to put on it. Thanks so much. It was weeping so much yesterday that I could press the cut and sap would ooze out!

You're welcome. If you can dry the cane with paper toweling just before dripping the wax on it, you should find it easier to seal. It's rather impressive to observe how rapidly and strongly the sap begins to flow once the sun hits the plant.

Personally I wouldn't bother trying to seal it but you can try if you feel like it. Kim is right in that the best time to do that is at night. Another way of stopping it weeping is to girdle the end of the cut cane by making a complete thin cut, a few mm deep just through the cambium layer just below the pruning cut, using a sharp clean knife. That will immediately stop the sap flow above it and the new wound, since it will be thin, will heal itself quickly. The end point will turn black and die and you can cut that off later. If you have pruned just above an eye then you could girdle just above the next convenient eye. But, as I said, I wouldn't bother.

I think I need to do something. It's still weeping, and several other cuts are, too. And it's putting out new canes, lots of them. I'd rather the sap go into making new canes.