Engrais pour plantes vivaces et grimpantes GardenPro 8-12-16 + Micro-engrais - 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.

Calcium is important because it builds and stabilizes plant cells as they form, acting as the structural support that keeps new growth strong and functional. Unlike other nutrients that drive color or speed of growth, calcium’s role is unique because it controls cell wall strength and membrane stability, making it essential for healthy roots, shoots, and long-term plant resilience rather than quick visual results.

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.

Organic matter is important because it stabilizes the root zone by holding water, storing nutrients, and improving airflow, which helps plants absorb what they need more consistently; it’s unique because it supports the whole growing environment instead of acting like a single nutrient with one job.

Feather meal supplies slow-release nitrogen that supports steady green growth over time, especially once roots and soil microbes are active. It’s unique because plants can’t use it immediately the way fast nitrogen sources work, so it’s best for building a long-term baseline rather than fixing a sudden deficiency overnight.

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.

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.

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.

Zinc sulfate supplies plant-available zinc to quickly correct zinc deficiency, helping restore normal new leaf expansion and steady growth at the tips. It’s important because zinc is needed in tiny amounts but strongly affects growth regulation, and zinc sulfate is unique for its predictable solubility and fast correction compared to slower zinc sources.

Because iron oxide is often poorly soluble, the iron can be present but locked up, especially when the root zone is too alkaline or roots are stressed. It’s important because iron drives chlorophyll and healthy new growth, and it’s unique from more readily available iron forms since it depends far more on root-zone conditions to become usable.

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.

Yes, but it works best as a slow, soil-building phosphorus source that supports steady root development and smoother transitions into flowering over time. Its uniqueness is that it feeds gently and gradually, helping reduce sudden phosphorus swings compared with fast-acting sources that can cause lockouts or imbalances when overapplied.

Yes, when soil is too acidic, limestone can help plants grow better by gently raising pH and supplying calcium so roots can absorb nutrients more smoothly. It’s unique because it fixes the root-zone chemistry itself, which can solve several “mystery deficiencies” at once, but if used when pH is already high it can trigger micronutrient lockout instead.