Or “The Best Ways to Spend $100” from this month’s issue of AARP Magazine.
http://pubs.aarp.org/aarptm/20130203_PR?folio=24#pg26
My personal favorite is “Just Call Me Herb”, which suggests the best return on investment as well as cash crop is fresh herbs. Chef Robert Irvine of the Food Network goes on to specifically recommend basil, rosemary, mint and chives.
Elfcroft suggests that the better investments are perennial herbs like sage, oregano, horehound, lemon balm, catnip and lavender, which return value year after year. Annual herbs like parsley, dill, cilantro and rue are great companions Chef Irvine’s ideas.
A herb garden is a two for one value. Not only is it a treasure of fresh ingredients for cooking, but also delightful for the foliage and aromas in the garden.
Parsley
Oregano
elfcroft 
We planted cilantro in our planter box last spring and enjoyed a bountiful harvest. However, it quickly went to seed when the hot, humid summer weather hit. Imagine our surprise when a little volunteer cilantro plant took up residence in the planter. It has flourished during the cold winter, even freezing temperatures and snow. We’re planning on having a winter crop of cilantro each year.
Chamomile spreads by seed too. However it does not grow in our winter climate.