BRF for fragmented rameal wood, a mulch of crushed green wood that enriches and protects the garden soil.
Still little known in France outside the circles of organic gardeners, the technique of the BRF was developed by Canadian researchers in the 1990s.
This involves covering the soil with a mulch made up of crushed young branches and twigs (less than 7 cm in diameter) in order to make the soil more fertile, limit watering and eliminate the need for fertilizers and chemical treatments.
The BRF an organic solution
Indeed, like any mulch, the BRF protects the soil from erosion, evaporation (especially since it absorbs and retains water particularly well) and from the growth of weeds . The young branches, rich in nutrients, are transformed by the activity of the subsoil (earthworms, mushrooms…) into organic elements gradually integrated into the soil to enrich it, aerate it and rebalance its pH. The result: more beautiful, healthier plants and, for crops, fruits and vegetables that give more.
The use of the BRF is therefore particularly suitable if the soil in your garden is poor, clayey or calcareous.
BRF in practice
The implementation of the BRF takes place in late winter or early spring. Collect green wood from the pruning of trees and shrubs in your garden or, if you are short of it, ask your local council to collect the pruning waste from the town’s gardeners. Put it through a plant shredder, taking care not to incorporate too many resinous branches which bring acidity (20% maximum).
Spread the mulch in a 2 to 5 cm layer over your flower beds, future vegetable or fruit beds (the BRF has proven itself on the cultivation of tomatoes, courgettes and strawberries), at the foot of your trees and shrubs, etc. Scratch lightly to incorporate it into the soil: that’s all! All you have to do is sow or plant as usual. The following year, you can add a new layer of BRF on the previous one, which will have partially integrated into the ground.