propagating endless summer?
Last fall I took one of the lower braches of my endless summer hydrangea removed lower leaves, scuffed up one of the leaf nodes, sprinkled a little rooting hormone, mounded soil over the branch and placed a brick on top. My hope was to create a twin to plant next to my existing hydrangea. However, it has not started to root yet. The buried branch is alive and healthy.
What am I doing wrong? Not enough water maybe? Will regular watering of the branch in question with seaweed emulsion help? Please advise.