Okay, let’s tackle this. So Joanne has 48 years of experience as a horticulturist, which is extremely long-term. Her skills in plant identification, horticulture, landscape maintenance, and landscape design are in high demand. However, her experience is not in a high-paying field like software development or finance. Location is New Hope, Pennsylvania, which is a relatively affluent area. Considering her extensive experience, skills, and location, I would estimate her hourly rate to be around $75. This is a relatively low rate compared to other professionals with similar skills and experience in high-demand fields. However, it's also worth noting that her experience is extremely long-term, which may impact her earning potential.