Greenhouse Gardening – How to Grow French Beans?

Greenhouse Gardening – How to Grow French Beans?

Sep 18, 2017 0 comments

French Beans are the young, unripe fruits and protective pods of certain cultivars of the String Bean or Common Bean (Phaseolus vulgaris). They differ from other varieties of beans in that they are normally harvested and ate with the enclosing pod before the seeds fully mature. French Beans are a great source of plant protein, fat, Vitamin A, C, and K as well as Iron, Manganese, and Magnesium. French beans do well in greenhouses if you grow them following the steps below.

Planting

  • Prepare a patch in your greenhouse kit and sow the bean seeds one week after the last frost date. Beans thrive in rich, well-drained soils with the optimal temperature for effective germination ranging from 60 to 75 degrees Fahrenheit.
  • Sow the seeds 9 inches apart in rows 18 inches apart. Seeds often germinate between 5 and 10 days after planting.

Tips and Tricks

Eggshell barriers, sawdust or beer traps are a few effective methods for containing slug and snails, which are detrimental to bean seedlings.

Common Problems

  • Slugs and snails eat and destroy freshly-germinated French beans seedlings.
  • Birds such as pigeons damage buds, leaves, and even the emerging pods.
  • Greenflies are detrimental as well. They suck sap and excrete sticky mildew, which the black sooty mold finds favorable.

Watering Requirements

Beans varieties require a modest supply of water. While French beans may require a little more. Generally, supplying between one and two inches of water every fortnight will suffice.

Soil Requirements

French beans thrive in light soil but it can do well in clay soil too as long as it is rich in organic matter and a pH of between 6.5 and 7.0.

Lighting Requirements

French beans require proper lighting during all stages of growth. Therefore, set your greenhouse kits in a manner that allows the plants to get adequate lighting.

Harvesting

The bean crop is usually ready for harvesting about 10 weeks after sowing. Harvest the pods by pulling them downwards to avoid damaging or uprooting the plant.


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