About two weeks ago I decided to give Endless Summer Hydrangeas another try. We bought one 2 weeks ago and it had very small buds. The buds are bigger now and even showing a hint of color. Is it ok to repot into larger pot now? They are still in original pots.
Repotting into new pot
I usually re-pot when my annual/biannual root check shows that the roots are growing in circles around the pot. But, I would put them in a slightly larger pot anyways because the original plastic pots get hot in the summer and the roots do not like several hours of that....