What does she do really...this looks more like lawn care...does she design gardens, landscaping, yard art, lawn maintaince, what? That would be helpful. IF she picks up fall leaves I say the leaf design looks great. However, if you are trying to convey she makes great green and healthy garden designs then don't use the leaf as it conveys fall, dying, drab colors. If she does flower gardens then use colorful flowers or at least colors.
I second the business card, sign, etc. info as well- we need to know how it is being used.
More info would be helpful.