What is the longevity of roses?
I have some roses that are between 20-25 years old. I have noticed that the last couple of years they are putting out fewer and fewer canes and blooms. On some I am down to one cane, but the base is over 12" long.
They have been on a regular watering and fertilizing schedule. No major diseases or pest infestations or any undue stress due to extreme weather. I live on the Central Coast of CA with temperatures year around that don't vary much, lows 30's-50's winter and highs 70's-80's summer.
I am just wondering if they have reached the end of their life span.