Complete liquid organic fertiliser pack with biostimulants

Fertiliser doses increase with the size of the plant, then reverse at flowering. At the first roots stage, each fertiliser is dosed at 0.25 ml per litre, and at the first true leaves stage at 0.5 ml per litre. In full growth, the grow fertiliser goes up to 2 ml per litre and the bloom fertiliser is kept aside. At pre-flowering, you combine the two at 1 ml per litre each, then the bloom fertiliser is used alone at 2 ml per litre until ripening. In soil, the fertiliser is applied every other watering, and a watering with plain water each week prevents salts building up in pots that drain heavily.

Biostimulants slot into this schedule. The root stimulator is dosed at 5 ml per litre at the first roots, then at 3 ml per litre at the first leaves. Repeat it every 7 to 10 days in hydroponics, or every 10 to 15 days in soil, until the root mass is well established. Fulvic acid supports the plant at 2 ml per litre from the first roots to pre-flowering. Seaweed extract is added at 5 ml per litre from the first leaves until flowering. The bloom stimulator, finally, takes over at 5 ml per litre from pre-flowering to ripening, and can also be sprayed at 3 ml per litre on the foliage, once a week during pre-flowering. For your fruiting crops, the article on growing tomatoes details how to manage flowering.

Organic nutrition depends on the activity of micro-organisms, and that activity depends first of all on temperature. For good results, keep the grow medium and the solution above 20 °C: below 15 °C at root level, the metabolism of the micro-organisms and of the roots slows markedly, and the fertiliser is broken down less well. In the garden, plant your vegetables in warmed soil and water with tepid water, for example water left out in the sun. As for pH, aim for 6.5 on coco fibre, with a tolerance of up to 7 in bioponics, and check it regularly with a drop test rather than correcting it blindly.

You receive the growth fertiliser, the bloom fertiliser, the root stimulator, the flowering stimulator, the cold-pressed seaweed extract and the fulvic acid, each in a 1 L bottle. Shake each bottle well before use, dilute each product separately in water, mix thoroughly, then clean your utensils between products. All six keep for 2 years, stored cool, dry and frost-free, upright in their original bottle. Yields differ from one bottle to the next: 500 litres of solution for each fertiliser at 2 ml per litre and for the fulvic acid, 200 litres for the seaweed extract and for each of the two stimulators, dosed at 5 ml per litre.

Take a 50-litre tank that is refreshed every week during peak growth. You add 100 ml of growth fertiliser, 100 ml of fulvic acid and 250 ml of seaweed extract. At that rate, the bottle of seaweed extract lasts 4 weeks, while the growth fertiliser and the fulvic acid last 10. In soil, where fertiliser is only applied every other watering and the doses in the early stages are low, the pack will see you through a full season on several dozen vegetable plants.