I want to ask this for my younger sister who does excellent gardening and now has a few clients.. she says it is hard work and I must agree.. how much an hour should she charge for planting shrubs/flowers/and basic gardening? Thanks in advance

Its hard to answer that because of the local market. My suggestion would be to have someone come in and give you an estimate on some work and have her figure out the math from there.

My landscaper charges by the month for general maintenance but it comes to about $12/hr in Central FL.