WASHINGTON 鈥� Springtime gardeners be warned: If you鈥檙e planning on planting bell pepper, pole beans and green cabbage this spring, you might not be getting the most for your money.
At least that鈥檚 the determination of a book published this month, “Square Foot Gardening High Value Veggies: Homegrown Produce Ranked by Value.” The book ranked vegetables in terms of their return on investment, calculating which veggies save money and which ones you’d be better off buying from聽the聽grocery store.
The rankings factor in the yield plants give per square foot and how much they聽cost to buy.
鈥淥f course you have to subtract things like how much water you used to produce that vegetable,鈥� says聽Kim Roman, the organization鈥檚 interim CEO. Roman is based in Timonium, Maryland.
Most cost-effective to grow
Author Mel Bartholomew is the founder of the , a nonprofit聽promotes a form of raised-bed gardening confined to a square-foot box.聽The book fits into the nonprofit鈥檚 broader mission of ending world hunger.
鈥淚t sounds like a lofty goal, but Mel figures if everybody learns square-foot gardening and turns around and teaches it to someone else, we could really help alleviate hunger,鈥� Roman says.
Once you learn the basics, there’s the matter of what to do next.聽鈥淎fter he [Bartholomew ] taught people how to garden, the very first question he got was, ‘What should I plant?’鈥� Roman says.
So he聽came up with this ranking system as a way to help these gardeners out. According to the book, the most cost-effective veggies for home gardeners are:
- Herbs
- Parsnip
- Cherry tomato
- Garlic
- Heirloom tomato
- Turnip
- Leek
- Winter squash
- Spinach
- Hybrid tomato
While herbs are widely recognized for their convenience,聽parsnip聽was a less-obvious choice. It, along with several other root vegetables,聽had a strong showing in the top 10 because certain root vegetables are聽relatively easy to grow and don鈥檛 require a lot of water. 鈥淭hey鈥檙e also more expensive in the grocery store,鈥� Roman says.
Least cost-effective
The bad news is a lot of things people would consider planting around this time of year aren’t very cost-effective. Topping the list was the potato, whose growing season聽typically falls between March 20 and May 10, according to the University of Maryland Extension.
鈥淵ou can actually purchase them cheaper than what it costs for water, soil amendments 鈥� things like that,鈥� Roman says.
Here鈥檚 the full list of the least cost-effective veggies:
- Potato
- Brussels sprouts
- Bell pepper (Note: bell peppers could be more cost-effective if you leave them in the ground longer; it鈥檚 cheaper to grow red or yellow peppers than buy them at the store, Roman says.)
- Swiss chard
- Asparagus
- Okra
- Bean
- Pole and bush bean
- Celery
- Green cabbage
Roman says these lists aren鈥檛 meant to be concrete rules, the “thou shalts” and “thou shalt nots” of home gardening.
鈥淩eally if it鈥檚 something you enjoy growing, or if you want to make sure it鈥檚 organic,鈥� Roman says, 鈥渄on鈥檛 let these figures stop you from growing something that you really love.鈥�
