Engrais GardenPro Légumes et Fleurs 10-15-19 + Micro-éléments - 1,8 kg

Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.

Available phosphoric acid provides a fast-absorbing form of phosphorus that fuels root growth, energy transfer, and strong flowering. It becomes part of the plant’s total available phosphate supply, but the two terms are not the same—available phosphoric acid is one source of phosphorus, while available phosphate refers to the entire pool of plant-available phosphorus overall.

Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.

Sulfur is important because plants need it to build key amino acids and proteins that drive real growth, strong structure, and efficient use of nitrogen, making it uniquely different from “look-alike” nutrients that may change leaf color without supporting the plant’s core building process.

Total magnesium is important because magnesium powers chlorophyll and energy use, helping plants stay green, turn light into growth, and use other nutrients efficiently—and it’s unique because its problems often come from nutrient balance and uptake competition, not just a simple shortage.

Total iron (Fe) matters because iron supports chlorophyll development and plant energy systems, keeping new growth green and vigorous; it’s unique from many other nutrients because iron deficiency usually shows up first in young leaves even when older leaves stay green, since iron doesn’t easily move within the plant.

Zinc is important because it powers key enzymes and helps regulate growth hormones, which directly controls healthy new leaves, normal internode spacing, and strong growth tips; it’s unique compared to many other micronutrients because zinc problems often show up as distorted, undersized new growth and stunting, not just simple leaf yellowing.

Total manganese matters because it supports photosynthesis and enzyme activity that keep new growth green and vigorous, and it’s unique because “total” manganese measures what’s present but not necessarily what the plant can absorb—so pH and root conditions decide whether manganese helps or harms.

Boron is essential because it stabilizes cell walls, supports root and shoot growth, and regulates sugar movement throughout the plant. What makes boron unique is its limited mobility and extremely narrow range between deficiency and excess, which causes new growth to show symptoms rapidly when levels fall out of balance.

Ammonium sulfate is unique because it delivers fast ammonium nitrogen plus plant-ready sulfate sulfur in one ingredient, and it can gently acidify the root zone over time, which matters for nutrient availability. This makes it especially useful when plants are pale and slow from true nitrogen and sulfur shortage, but it also means overuse can cause salt stress or pH drift faster than many other options.

Monoammonium phosphate feeds roots with phosphate for energy transfer and ammonium nitrogen for fast tissue building, which is why it can boost early rooting and growth more quickly than many other phosphorus sources. It’s unique because the ammonium portion can change root-zone pH and nutrient availability, so using it correctly supports roots, but overusing it can trigger imbalances that look like other deficiencies.

Muriate of potash supplies potassium to help plants manage water, move sugars, and build stronger growth, which is especially important when plants are flowering or fruiting. It’s unique because it delivers potassium in a very concentrated form while also adding chloride, so it can fix low potassium fast but needs care to avoid salt buildup and imbalance.

Potassium magnesium sulphate is used to supply potassium, magnesium, and sulphur together, which helps support strong growth, photosynthesis, and protein-building without relying on chloride-heavy potassium sources. It’s unique because it can improve K-to-Mg balance when potassium demand rises, making it especially helpful when older leaves show potassium stress at the edges and magnesium-style fading between veins at the same time.

Urea can burn plants because it must convert in the root zone, and that conversion can create a concentrated, temporarily harsh micro-zone that stresses roots, especially if urea is piled, left on the surface, or not watered in. That conversion step is what makes urea unique compared with nitrogen forms that are already plant-available, so correct placement and moisture are critical.

Kelp meal supports balanced growth and stronger roots by gently enhancing root-zone biology and helping plants handle stress more smoothly than fast-acting inputs, making it unique as a steady “support” amendment rather than a quick nutrient fix.