Algae, A Background Fertilizer

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Algae are a natural organic fertilizer background to use in the garden, provided to live on the seafront to avoid buying in gardening. They will make it possible to correct deficiencies or to come in addition to another natural fertilization.

seaweed algae

The contributions of algae as fertilizer

Algae are rich in nitrogen in potassium, magnesium, calcium and trace elements necessary for crops (boron, iron, manganese, sulfur...), vitamins and growth hormones. They are low in carbon.

Their action is stimulating for young plants in the spring, not to mention that the algae collected too much can also enrich the compost pile.

In addition to their fertilizing action, algae protect vegetables from attack by insects and diseases.

The famous and tasty potatoes of Noirmoutier owe much to seaweed whose use by market gardeners was well known to enrich the soil.

What algae to use in the garden?

All the seaweed that you will find when the sea recedes can be used: laminaria, fucus, sea lettuce, red seaweed, green algae, brown seaweed...

sea ​​lettuce

Beware of lithothamme: this powder comes from the skeleton of a calcareous seaweed of Brittany coast that is not easily renewed. Like peat bogs, the deposits are in danger of disappearing.

When to bring seaweed to the garden?

Being a quick-acting fertilizer, that is to say that has an instantaneous stimulating action, the algae are sprayed (5% dilution) in the spring when the plants are struggling to recover or suffer from a climatic incident, an attack of parasites or a disease. They are thus reinforced, more resistant to cold and small spring frosts.

In 10% dilution, you can also water your most gourmet vegetables and your flowering plants: they will revive quickly.

seaweed on the beach for use in the garden

The spraying is done once or twice at 15 days intervals. You can renew it as needed.

How to bring algae to the garden?

While strolling by the sea, ideally during high tides, collect seaweed taking care to rid them, if any, of waste that would be entangled in the seaweed. To desalt them, you can spread them on a virgin zone of your garden so that the rain can wash them or you can rinse them with the jet or in a tank. They can then be used as is but can also be dried for later use.

To prepare the maceration of algae, soak in the shade 2 kg of fresh algae desalinated in a tank containing 10 liters of water for 10 days. Stir as often as possible, passing by, and filter before using in 5% dilution for spraying or 10% for watering.

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Video: Planted tank - Tank Balance & nutrient dosing.

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