When faced with the array of garden tools at the garden center, a new gardener can be forgiven for being confused and unsure of how to decide what is needed. There are all manner of shovels and rakes, trowels, cultivators, and weeders, as well as grass clippers, pruning shears and loppers. Where to begin? How much of an investment will be required? In fact, very few tools are absolutely necessary, as any experienced gardener who finds herself using…