Ein gesunder Garten mit natürlichen Produkten: Warum Sie auf Zeolith und Kalk setzen sollten

A healthy garden with natural products: Why you should rely on zeolite and lime

What effect does lime have? in the plant?

Lime (in the form of calcium carbonate) plays an important role in plant growth and development. Here are some of the main functions that lime performs in plants:

  1. Structural role: Calcium, the main element in limestone, is an essential component of cell walls and membranes. It gives plants strength and stability.
  2. Nutrient uptake: Calcium improves the uptake of other nutrients by the plant, especially phosphate, by forming a soluble compound with it that the plant can absorb.
  3. Soil pH and nutrient availability: Lime helps regulate the soil's pH. Soil that is too acidic can limit the availability of certain nutrients and impair plant health. By raising the pH, lime can improve the availability of these nutrients.
  4. Disease control: Calcium also plays a role in strengthening plants' defense mechanisms against diseases and pests. Sufficient calcium levels can help reduce the risk of certain diseases, such as blossom-end rot in tomatoes.
  5. Metabolic processes: Calcium plays a role in various enzymatic processes and helps regulate the plant's metabolism.

How does a calcium deficiency manifest itself in which plants?

A calcium deficiency can cause various symptoms in plants, often appearing on young leaves and fruits, as calcium is a non-mobile nutrient. This means it cannot be transported from older to younger parts of the plant. The following symptoms may indicate a calcium deficiency:

  1. Distorted or stunted new leaves and shoots: Since calcium plays an important role in cell structure and function, young leaves and shoots that do not receive enough calcium may appear deformed or underdeveloped.
  2. Brown or black spots on leaves and fruit: This is a common symptom, especially on fruit. A well-known example is blossom-end rot in tomatoes, peppers, and watermelons. It manifests as dark, withered spots at the blossom end of the fruit.
  3. Discoloration and death of leaf tips: This symptom, also known as "tip burn", frequently occurs in lettuce and other leafy vegetables.
  4. Delayed growth: Calcium is essential for cell growth and cell division. A deficiency can therefore delay plant growth.
  5. Root problems: Calcium also plays a role in root growth and health. A deficiency can lead to brittle or underdeveloped roots.

It is important to note that the exact symptoms can depend on the plant species and other environmental conditions. If a calcium deficiency is suspected, a soil analysis should be carried out to determine the exact nutrient status and take appropriate measures.


Calcium deficiency in tomatoes?

In tomatoes, calcium deficiency manifests primarily as a disease known as blossom-end rot . Symptoms typically appear on the fruit, not the leaves. It's important to note that blossom-end rot symptoms usually only become visible when the fruit is about half-ripe.

Blossom end rot begins with small, watery spots at the blossom end of the tomato fruit, that is, the end opposite the stem. These spots gradually become larger and darker – they turn into leathery, dark brown or black spots that can eventually cover the entire underside of the tomato.

Although blossom-end rot is often associated with calcium deficiency, it is not always solely due to a lack of calcium in the soil. The disease can also be caused by inconsistent watering, high humidity, high salt concentrations in the soil, and certain pathogens that impair the plant's ability to absorb calcium.

To remedy a calcium deficiency in tomatoes, you can work lime or gypsum into the soil, use a calcium-based fertilizer solution, or water the plants regularly and evenly to ensure that the plants can absorb the calcium from the soil.


Which type of lime should be used in the garden?

Lime plays a vital role as a nutrient for a vast array of microorganisms and vegetation – and the key lies in selecting the right type of lime. Tribomechanically micronized lime is particularly suitable, as its fine particle size allows plants to absorb it more effectively.


Why is the particle size of lime so important?

"Imagine this like a hamburger that you can eat because its size fits your mouth well. A football-sized hamburger, on the other hand, would be inedible, and a meter-long one even more so. It's similar with lime: The lime traditionally spread on fields is chemically detectable, but inaccessible to plants because its particles are too large."

The goal is to reduce the particle size to a level that makes it available to the plant, i.e., it should be below 10 microns . The combination of lime and zeolite creates optimal conditions to support the plants both on and within the leaves. The lime can be absorbed through the stomata and directly through the cell surfaces of the leaves.

Another advantage is that calcite and zeolite on the leaf surface stimulate microorganisms that absorb ammonia from the atmosphere and make it available to the leaf. This is also the reason for the dark green color of the leaves, as they are supplied with natural nitrogen from the atmosphere.

An additional mechanical effect is that the silicate particles resemble tiny shards of glass, remaining unchanged on the leaf surface. This has a beneficial side effect: insects with sensory organs on their legs find this unpleasant and keep their distance from the plant. Thus, we have a repellent through a physical process . Furthermore, some of the silicate particles are so fine that they disrupt and block the respiratory organs of unwanted insects, such as mites and aphids .

Zeolite and limestone are also rich in trace elements , which is beneficial. A zeolite quarry, which already contains a variety of trace elements, is therefore particularly valuable. With this comprehensive package, we stimulate metabolism, activate the body's defenses, strengthen the immune system, keep diseases and insects away, and increase yield.

In summary, the plant is optimally supported and supplied by the use of zeolite and calcium as a foliar fertilizer. It is particularly important that the calcium and zeolite are electrostatically charged due to the tribomechanical milling process and have a particle size of less than 10 microns.

Thank you Dr. Peter Ost, zeolite expert.


How does zeolite work in the soil and on plants?

STEINKRAFT Zeolite for fertile soils
  1. Soil improvement: Zeolite can help improve soil structure. It increases the soil's water retention capacity, which is particularly beneficial in dry regions or during periods of water scarcity. This improved water retention allows the soil to retain moisture for longer, resulting in less frequent watering and better water efficiency.
  2. Nutrient uptake: Zeolite has a high cation exchange capacity, meaning it can bind positively charged particles (like many of the nutrients plants need) and release them later. This means it can act as a kind of "nutrient reservoir" in the soil, helping to make nutrients available when plants need them.
  3. Environmental friendliness: Zeolite is a natural mineral that is safe and environmentally friendly. It contains no harmful chemicals and can help reduce the need for synthetic fertilizers by improving nutrient uptake and retention in the soil.
  4. Pest control: Some gardeners also use zeolite for pest control. Its abrasive nature can make it unpleasant for pests and help keep them away from plants.
  5. Sun protection: Winegrowers often spray zeolite when the sun is blazing down to protect the vines. Essentially, it's like sunscreen.


Lime and zeolite in the garden - user reviews

"I've been using Veggikraft in my garden for a year now and the results are simply fantastic! My tomatoes are bigger and tastier than ever before. And I haven't had any tomato blight. I've always added Veggikraft to the watering can . I love that I can grow healthy, organic vegetables for my family." *****
Julia, passionate home gardener

"Since I started using Grünkraft Calcium and Grünkraft Zeolite on my fields, I've noticed a significant improvement in plant health and yields. The powders are so fine that they were easy to spray. Next time, I'll spray them together with the microorganisms. I highly recommend these products to every farmer." *****
Markus, regenerative farmer

"Veggikraft has transformed my garden! My vegetables are growing like never before. I sprayed the young plants every week. I'm thrilled that I can provide my family with fresh, organic vegetables." *****
Stefanie, proud organic gardener

"As a farmer, I'm constantly looking for ways to increase my yields while protecting the environment. With Grünkraft Calcium and Grünkraft Zeolite Pure, I've found exactly what I need. The products are easy to use and they work!" *****
Thomas, organic farmer

" Veggiekraft is a must-have for every home gardener! It's so easy to use and the results speak for themselves. My vegetables are healthy, vibrant, and absolutely delicious! I also seem to have fewer, or actually no, slugs at all." *****
Petra, enthusiastic amateur gardener and grandmother

🌱 Questions & Answers about the effects of zeolite in soil and on plants

1. What effect does zeolite have on the soil?

Zeolite improves soil structure , increases water retention capacity , and acts as a natural nutrient reservoir . Due to its high cation exchange capacity, zeolite binds essential minerals such as potassium, calcium, magnesium, and ammonium , releasing them to plants as needed. This leads to a more stable soil environment , vigorous root growth, and improved nutrient uptake . Zeolite is particularly effective in improving sandy soils.


2. How does zeolite help plants grow?

Zeolite supports plant growth by storing and slowly releasing nutrients and trace elements such as silicon , calcium , and iron . These elements strengthen plant cells , make leaves more resilient, and promote photosynthesis . Plants treated with zeolite often exhibit more intense green color, stronger stems, and higher yields . Due to its mineral structure, zeolite also acts as a natural soil protectant against desiccation and nutrient loss.


3. Why is zeolite a sustainable soil improvement?

Zeolite is a natural mineral of volcanic origin and contains no chemical additives. It improves soil quality , promotes beneficial microbiology , and reduces the need for synthetic fertilizers . Because zeolite can bind pollutants, it also protects groundwater . Zeolite is valued in organic farming and horticulture because it increases soil fertility in the long term and regenerates soil structure .


4. Can I use zeolite and lime together in the garden?

Yes, zeolite and lime complement each other perfectly. While lime regulates the soil's pH and provides calcium , zeolite introduces a variety of trace elements and silicon . This combination strengthens plant health , activates soil life , and makes nutrients readily available to plants. Many gardeners and winegrowers use Grünkraft Calcium together with Grünkraft Zeolite Pure to improve both soil structure and plant stability .


5. How does zeolite work against drought stress in the garden?

Zeolite has an excellent ability to store water in the soil and release it slowly to the plants. This reduces the need for irrigation and helps plants better withstand periods of drought . Especially in hot summers or with sandy soils, zeolite helps retain moisture in the root zone . This protects against desiccation , promotes soil moisture , and contributes to greater water efficiency .


6. What role does silicon in zeolite play for plants?

Silicon is a naturally occurring trace element in clinoptilolite zeolite . It strengthens plant cells , promotes stability , and improves resistance to pests, fungal infections, and UV radiation. Rudolf Steiner said: "Silicon brings the forces of the universe to the plant" —and this is precisely what is evident in practice: Silicon from zeolite acts as a natural plant tonic from within.


7. Can zeolite also be used as a natural plant protection agent?

Yes, zeolite can be sprayed onto the leaves as a fine rock flour . It acts as a natural sunscreen and can also repel pests , as its fine, mineral structure is unpleasant for many insects. Winegrowers regularly spray zeolite on vines to protect them from intense sunlight – an environmentally friendly alternative to chemical sprays.


8. Is zeolite safe for children, pets, and the environment?

Yes, zeolite is non-toxic , biodegradable , and completely environmentally friendly . It contains no chemical additives or animal-derived components. This makes zeolite ideal for organic gardens , family gardens , and farms with animals . Steinkraft zeolite is also vegan and comes from natural sources without any animal residues such as horn shavings or sheep's wool .


9. How often should I use zeolite in the garden?

For optimal soil improvement, regular application of zeolite is recommended – about once or twice per season. It can be worked directly into the soil or added to the irrigation water . For foliar sprays (e.g., with Veggikraft ), a weekly application is sufficient to promote plant stability and leaf health .


10. Why do so many gardeners swear by zeolite in their vegetable gardens?

Because zeolite brings the soil to life ! Many amateur and professional gardeners report stronger plants, higher yields , and more flavorful vegetables since using zeolite. It's a true all-rounder – a soil activator , moisture reservoir , and nutrient buffer all in one. Those who have experienced how vibrant plants grow with zeolite usually stick with it.

Questions & Answers about the use of lime and zeolite in the garden

1. Question: What is the difference between Grünkraft Calcium and Grünkraft Zeolite Pure?

Answer: Grünkraft Calcium and Grünkraft Zeolite are both high-quality foliar fertilizers for improving plant health and nutrition. Grünkraft Calcium provides your plants with the essential nutrient calcium in a form that plants can optimally absorb. Grünkraft Zeolite is natural clinoptilolite zeolite, a mineral that provides plants with numerous trace elements and silicon. "Silicon brings the forces of the universe to the plant," Rudolf Steiner is said to have emphasized.

2. Question: Can I useGrünkraft Calcium and Grünkraft Zeolite together?

Answer: Yes, and many farmers do that. Winegrowers, in particular, like to mix their own blends, depending on whether they want to supply the plants with more calcium or need more silicon. Or they might just spray zeolite to protect the plants from the sun.

3. Question: How does Veggikraft differ from other garden products?

Answer: Veggikraft is specially designed for home gardeners and contains all the necessary nutrients to make your vegetables healthy and tasty. It is easy to use and perfectly suited for organic growing.

4. Question: Is Veggikraft suitable for all types of vegetables?

Yes, Veggikraft is versatile and ideal for all types of vegetables, from tomatoes and peppers to lettuce and herbs. Simply spray the young plants and then add it to the watering can. The rock dust is so finely powdered that the soil can use it immediately. (Plant availability of over 90%. Conventional limes have an availability of max. 50%).

5. Question: Are STEINKRAFT lime and zeolite products safe for children and pets?

Yes, our products are designed for organic farming and contain no harmful chemicals. They are safe for children, pets, the environment, and water.

Question 6: Is Veggikraft vegan?

Yes, Steinkraft lime and zeolite products are vegan. They contain nothing from dead animals. That's important to me; I don't want anything from animals in the soil. Yes, that also means no sheep's wool. That belongs somewhere else, but in my opinion, not in the soil. Nor do I use horn shavings or dried blood.

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