June 3rd, 2009 6 users recommend
Compost, minerals, and drip irrigation are the secret to a bountiful crop of filet beans on Melinda Bateman's New Mexico farm.
Compost, minerals, and drip irrigation are the secret to a bountiful crop of filet beans on Melinda Bateman's New Mexico farm.Photo: Ruth Lively
by Melissa Bateman
from issue #33
One day at the farmer’s market, a customer took one look at my filet beans and inquired whether I had grown the ones she had eaten the previous night at a local restaurant. I had. She proceeded to rave about how incredible the beans had been. To her, they were the most memorable part of the meal. Fancy that, green beans being the best part of a delicious meal at a fine restaurant. She bought a pound of beans and went home happy.
What is the allure of filet beans, also known as haricots verts? To me, it’s their tender, fresh sweetness, that essential green bean flavor condensed into one small package—green bean perfection. The chefs we sell to love them, because filet beans really add elegance to a dinner plate. And they are our favorite crop to grow.
Small-seeded varieties are more tender
We live and farm four miles north of Taos, New Mexico, at an elevation of 7,600 feet. Our average yearly rainfall is 12 inches. We have a four-month growing season and heavy winds in May and June. How can we grow good filet beans in such an extreme climate? The secret of our success lies in our choice of varieties. We have trialed numerous varieties of filet beans here at the farm. Our all-time favorite is ‘Finaud’. It is always the most tender and sweetest bean in our garden, and it bears bigger crops. When ‘Finaud’ was commercially unavailable for a couple of years, we replaced it with ‘Tavera’ and ‘Nickel’. Luckily, ‘Finaud’ is going to be back on the market this year. All three of these varieties are very small-seeded, and the smaller the seed, the more tender the bean.
The small white seeds in the photo at left are those of the author's preferred varieties: 'Finaud', her favoriate, and 'Nickel', and 'Tavera', which are shown at right. All are tender, flavorful, and productive. There is another type or class of filet bean that has large seeds. I have trialed a number of these: ‘Vernandon’, ‘Fin des Bagnols’, ‘Triomphe de Farcy’, and ‘Emerite’, a pole-bean type that requires trellising or some kind of support. None has been satisfactory despite the glowing catalog descriptions. In our garden, they produce relatively few beans, which are usually large and tough, even when picked daily. I can’t recommend them, although I have wondered occasionally if these varieties would do better in a different climate.
Fertile soil and regular moisture are critical
Most vegetable catalogs offer filet bean seed. The following sell varieties recommended by the author.
The Cooks Garden
PO Box C5030
Warminster, PA 18974
Johnny's Selected Seeds
955 Benton Avenue
Winslow, Maine 04901
We irrigate all our crops with drip tape, which we lay right beside each row of beans. During the growing season, we run daily cycles of water. The filet beans get 30 to 45 minutes per day, either in the evening or early morning. This keeps the soil moist but not soggy. You will need to adjust watering to suit your climate conditions.
A filet bean timetable
I wait for the weather to settle to plant filet beans. When the soil is warm enough to plant corn, 60°F, it’s also safe for beans. In cooler soils, filet beans germinate erratically, and the plantings lack vigor. They end up bearing about the same time as later plantings. But you don’t need a soil thermometer to know when to plant; when it feels safe to set out tomatoes, eggplants, and peppers, you can plant beans, too. I can usually sow a first crop by June 5. It will begin to yield about 50 days later, around July 25. I do a series of succession plantings, allowing 10 days to two weeks between plantings. Yields vary with weather conditions, but typically the first week of harvest is scanty, the second week is heavy, and the yield tapers off again the third week. After that we tear out the beans and plant a cover crop.
How many beans should you plant at a time? One plant will yield about 1⁄2 pound of beans total. If I were planting just for our family of four, I would plan on having 5 to 10 plants per planting. To the first planting I would add three extra plants for seed saving, and in a second or third succession, I would sow a larger planting of 20 plants to make our favorite dill beans for wintertime snacking. Keep in mind that when they’re in season, we eat filet beans daily, so adjust your planting accordingly. I can only imagine how thrilled a neighbor or co-worker would be to receive any excess beans you might grow.
Inoculate for a better, healthier crop
Prior to planting, we inoculate bean seeds with nitrogen-fixing bacteria powder. This step allows the beans to produce nitrogen. When we pull up inoculated plants, either to clean up for a cover crop or to thin, we see nitrogen nodules on the roots. Now don’t get too excited about this, because the beans use about the same amount of nitrogen they produce. We don’t get a bean crop and a cover crop out of the filet bean. But I do see a hardier plant, and I think it’s worth the time to inoculate. All you need is a clean tin can holding all the beans you plan to plant in the next half hour, a sprinkle of inoculant, and a splash of water to make the inoculant stick to the beans. Give the can a shake and you’re ready to plant. If you don’t sow all the seeds you inoculate, let them dry out and store them for another planting.
We have had no pest problems in the beans. One year I found a few Mexican bean beetle larvae (top photo, p. 13). Oddly enough, they were only on the ‘Emerite’ beans I was trialing that season. I hand-picked the larvae off and smashed them.
It is a good idea to limit handling of the plants or harvesting in rainy or damp weather because this can knock off blossoms and decrease your yield. In humid climates, where rust might be a problem, handling wet plants can also transmit rust disease. Recently we began feeding the plants just at blossom set with a foliar spray of kelp. We hoped this would encourage the plants to set fruit longer, but at this point we don’t have any proof of positive results from our experiment.
We harvest every other day, picking pods when they are 4 to 5 inches long. Filet beans do not keep well for long. You should eat them within four days of picking. If you need to store your harvest for a few days, soak the beans in cold water to remove any field heat, then drain them, and refrigerate in a plastic bag. But if you love these elegant, tender beans as much as we do, you won’t be storing them long.posted in: