Dragon Tongue
Dragon TongueDragon TongueDragon Tongue

Dragon Tongue

5 out of 5 based on 4 customer ratings
(4 customer reviews)


  • Bush bean
  • Yellow with bright purple stripes
  • AKA Merveile de Piemontel
  • Open-pollinated and heirloom
  • Matures in 65 days

Product Description

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This beautiful, old heirloom variety is good for fresh use or for dried beans. When the flat, string-less 15-18cm (6-7″) beans turn from a lime green to yellow with bright purple stripes, they’re ready to use for cooking or freezing. They can also be grown to the dry stage for winter use in soups and stews. You should mark some plants for regular picking and leave other plants unpicked to mature for dry beans. Dragon tongue bush bean seeds are brown with dark markings. Also known as Merveille de Piemonte.

Matures in 65 days. (Open-pollinated seeds)

How to Grow Bush Beans

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All bush and pole beans are high in starch, protein, dietary fibre, and a host of minerals such as potassium, iron, selenium, and molybdenum. Green beans, whether grown on a bush or a vine, are very high in vitamin C and calcium. when reconstituted and cooked, dry beans are very high in starch, protein, and dietary fibre.  Follow along with this handy How to Grow Bush Beans Guide and some of your family’s favourite food!

Phaseolus Vulgaris
Family: Fabaceae


We Recommend: We recommend Maxibel Organic BN135 or Conventional Maxibel BN137. Productive over a surprisingly long time, and very tasty.
For Urban Gardeners: Mascotte (BN103). If you want to grow bush beans in containers, Mascotte is the one. Plants are compact, yet productive, and the beans are delicious!

Season & Zone
Season: Warm season
Exposure: Full-sun
Zone: 3 and warmer

Direct sow from mid-May to the beginning of July. Try to plant during a warm, dry spell. Soil must be warm – if it is not warm enough, seeds will rot, especially our untreated seeds. Optimal soil temperature: 21-32°C (70-90°F).

Sow seeds 2-5cm (1-2″) deep, 5-8cm (2-3″) apart, in rows 45-60cm (18-24″) apart. Thin to at least 15cm (6″) apart in each row. Using bean or combination inoculants on seeds helps growth. If the weather is too wet, beans can also be started in pots indoors and set out carefully a few weeks later. For a continuous harvest, plant at 3 week intervals. Seeds will sprout in 8-16 days, depending on conditions.

Ideal pH: 6.0-6.5. Well drained, warm soil in full sun is best. Raised beds help with both drainage and warmth. Use 1 cup of complete organic fertilizer for every wm (10′) of row. Too much nitrogen fertilizer is often the cause of poor pod set and delayed maturity. If beans flower but do not set pods, the cause can be zinc deficiency. Try spraying the plants with kelp based fertilizer. Wet leaves on crowded plants are subject to diseases. Thin plants to increase air circulation and avoid touching the leaves while they are wet.

Pick beans regularly to keep the plant producing (if pods get fat with seed, the plant will stop flowering). The smaller the bean, the more tender they are.

Seed Info
In optimal conditions a tleast 75% of seeds should germinate. Usual seed life: 3 years. Per 100′ row: 800 seeds. Per acre: 232M seeds.

Diseases & Pests
Aphids – A hard stream of water can be used to remove aphids from plants. Wash off with water early in the day. Check for natural enemies such as gray-brown or bloated parasitized aphids and the presence of larvae of lady beetles and lacewings.

Spider mites (two-spotted) – Wash off with water early in the day. A hard stream of water can be used to remove mites.

Leafhoppers – Small, light green to gray insects that feed on the plant juices, causing stunted growth, and transferring viruses. No cultural control available.

Companion Planting
Beans fix nitrogen in the soil. Plant with beets, Brassicas, carrots, celery, chard, corn, cucumber, eggplant, peas, potatoes, radish, and strawberries. Avoid planting near chives, garlic, leeks, and onions.

More on Companion Planting.

4 reviews for Dragon Tongue

  1. 5 out of 5

    (verified owner):

    One of the best surprises of my garden this year! I planted 6 rows about 60ft each in the 2nd week of June(Sask) and they filled in great. I used an inoculant.

    Careful though, they produce vigourously. I was getting about 50-60 pounds per week the above set up, so lots of happy neighbours 🙂 .

    Unfortunately an unscheduled frost cut my season short, but I’ll be planting plenty more next year! My family found them to never be tough like other beans can be if you leave them too long.

    For anyone doing planning: I got about 12-15 pods (4-6 inches long) per plant per 3.5 days. 1 Plant takes up just over 1ft squared.

  2. 5 out of 5

    (verified owner):

    these are the most fantastic beans i’ve ever gown. they start producing early and carry on right through the summer. they don’t get woody or stringy and they taste fantastic. plus, they’re easy to pick because the colour of the bean stands out against the plant/leaves. highly recommended!

  3. 5 out of 5

    (verified owner):

    OUTSTANDING bush bean. Produce amazingly well. Huge beans – foot long, juicy, (as stated stringless) and I was getting dozens per plant. From mid summer to all the way to fall (although I did have a few late planted bushes that may account for that). Tried them in two different parts of my raised gardens. One with the rest of the beans, and one in a little small 2×2 square. In the 2×2 I had approx 8 plants – and these actually did the best – they were the late plants – but they were big, beautiful bushy plants, with the largest beans. They were a bit crowded, but it was good dirt with good compost, so except for the fact that I had to move carefully to avoid harming plants, it was a beautiful giant bean bush!

    Best fresh of course 🙂 , but also tried frying, and great pickled. (lose their purple colour when cooked fyi.)

  4. 5 out of 5

    (verified owner):

    These beans are wildly productive and I quickly became overwhelmed. I intensive plant, and I should have done them every 2 feet instead of every 1. Most ended up being left to seed, but even with big beans on late picked pods, they were juicy and delicious.

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