What bot are you using? The GUIs differ from bot to bot.
For cash, just set it up to Summer's Garden and Pick Herbs. (don't waste your time picking herbs in other gardens.) If applicable, DO NOT select "Drop Low-Level Herbs." No breaks.
For EXP, don't select pick herbs. This will work in any garden, but Summer is by far the best at 60k+ an hour. For most bots, no need for a Pestle and Mortar, so just start it inside the garden and you're golden.
Don't worry about getting the broom. You'll only bank once every half hour or so, and the broom won't help much at all in the long run.