Compo Expert Blaukorn

SKU: 20200822452
HAN: 20200822452
Category: Fertilizer
Manufacturers: Compo Expert

When your lawn struggles after the winter months or your vegetable beds lack the necessary energy, Compo Expert Blaukorn delivers a reliable, immediate rescue. As a universal NPK complex fertilizer, it supplies all nutritional and ornamental plants evenly with the three most critical primary nutrients. Thanks to our flexible variant product page, you can easily choose the ideal bag size and exact formulation that matches your plants and soil conditions from the menu above.

🌱 Blaukorn Classic (12-8-16): The phosphorus-rich all-round solution—optimal for strong root propagation during the early spring start, young plants, and universal garden plot setups.
🍎 Blaukorn Premium (15-3-20): The potassium-heavy professional formula—ideal for high fruit yields in vegetable patches, improved crop shelf life, and maximum drought resistance for your lawn.
🧱 True Complex Granules: Every single grain contains the exact identical nutrient combination, which prevents separation inside the fertilizer spreader and ensures perfectly uniform growth.
⚡ Rapid Nutrient Availability: The purely mineral composition dissolves quickly upon contact with soil moisture, offering fast relief against visible nutrient deficiencies.
🧑‍🌾 Dust-Free Professional Quality: Excellently calibrated round grains that can be distributed completely hassle-free by hand or with a standard push spreader.

Variation: Classic

Premium
Quantity: 1kg 1kg

5kg 5kg

10kg 10kg

25kg 25kg

from

9,67 €

incl. 19% VAT , plus

Available immediately

This item has variations. Please select the requested variation.

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Buy Compo Expert Blaukorn – Classic & Premium for Every Application

To ensure stable growth, rich green leaves, and high yields, garden plants require a continuous and complete nutrient supply. Compo Expert Blaukorn is one of the most widely recognized and proven mineral NPK fertilizers in professional horticulture. As a true complex granule, it delivers all macro- and micronutrients inside every single grain. Because we offer this universal fertilizer as a flexible variant product, you can select the perfect bag size and the ideal formula for your soil conditions right from the selection menu—choosing between the trusted Classic and the potassium-rich Premium edition.

Which variant should you buy right now?

🌱 Classic → Ideal for spring, new plantings, and building up depleted soil structure.
🍅 Premium → Perfect for summer, enhancing crop yields, and preventing drought stress.

Simply choose your preferred variant and packaging size from the menu above—we deliver fresh, professional-grade stock directly to your doorstep.

Buy Blaukorn: Why the mineral nutrient formula from Compo Expert works so effectively

Unlike organic fertilizers, which must first be painstakingly broken down by soil biology, the nutrients in Compo Expert Blaukorn are present in a directly water-soluble form. As soon as the dust-free granules come into contact with rain or irrigation water, they dissolve and reach the plant roots immediately. This ensures rapid nutrient uptake—which is crucial when dealing with acute deficiency symptoms or when forcing quick growth during early spring.

The active ingredients in the mix fulfill clear roles in your garden:

Nitrogen (N): Responsible for building up plant biomass and promoting thick, vibrant green leaves on lawns and vegetables.
Phosphorus (P): Supplies the necessary energy for a strong root network and supports later flower and bud development.
Potassium (K): Regulates the plant's water balance, strengthens cellular tissue, and increases the shelf life of harvested fruits and vegetables.
Magnesium, Sulfur & Trace Elements (TE): Activate metabolic processes and protect your crops from typical deficiency-related diseases, such as yellowing leaf veins.

📌 Practical Tip for Your Order

If you want to buy premium Compo Expert Blaukorn for your garden, simply match the variant to your current project stage: Use the Classic variant as a powerful starter in March and April, and switch to the Premium variant from June onwards to give your plants the necessary resilience for the summer heat. We deliver both professional formulas freshly stored in robust bags straight to your door.

Application Areas: How to use the variants correctly throughout the gardening year

Application for Classic:

Strong roots and solid baseline nutrition

Vegetable Beets & New Plots: Excellent as an initial base fertilizer in March or April to enrich the soil with enough phosphorus for deep root propagation.
Trees, Hedges & Shrubs: Helps woody plants like Thuja or cherry laurel build up their structural frame during the crucial spring growth phase.

Application for Premium:

High yields and maximum resilience

Fruit & Fruiting Vegetables: Ideal for heavy feeders like tomatoes, zucchini, or berry bushes during the fruiting phase to improve taste, quality, and storage life.
Heavy-Wear Lawns: The high potassium content ensures stiff turf blades that withstand hot summer dry spells and icy winter frosts much better.

Important Application Notes:

Avoid these common mistakes

Do not scatter onto wet foliage: Always apply the granules directly onto the soil surface. If grains get stuck on damp leaves in the scorching midday sun, severe chemical leaf burns can occur.
Always water thoroughly after application: Nutrients only become accessible to plant roots via moisture. Heavy watering accelerates the fertilizer's effect and prevents localized salt shock in the soil.

Practical Dosage Recommendations (g/m²)

Because Compo Expert Blaukorn is highly concentrated, a conservative application rate is fully sufficient. A level handful equals roughly 40 to 50 grams of granules in practice.

Vegetable Crops (Heavy feeders like cabbage, tomatoes): Scatter approx. 60–80 g/m² evenly and rake lightly into the upper layer of soil.
Vegetable Crops (Light feeders like lettuce, radishes): Approx. 30–40 g/m² is fully adequate for the entire growing cycle.
Ornamental Plants, Flowers & Perennials: Spread approx. 30–60 g/m² around the base of the plants in early spring.
Lawns: Approx. 30–50 g/m² per application. Ideally use Classic in spring (for the initial boost) and Premium in early summer (for heat protection).

Technical Data & Declaration

Parameter	Specification (Classic)	Specification (Premium)
Manufacturer	Compo Expert (Professional Quality)	Compo Expert (Professional Quality)
Fertilizer Type	Low-chloride NPK complex fertilizer 12-8-16	Low-chloride NPK complex fertilizer 15-3-20
Additives	+3% Mg (Magnesium), +10% S (Sulfur) + Trace Elements	+3% Mg (Magnesium), +10% S (Sulfur) + Trace Elements
Form	Uniform, surface-treated complex granules	Uniform, surface-treated compact granules

Frequently Asked Questions about Compo Expert Blaukorn

What is the main difference between Blaukorn Classic and Premium?
Blaukorn Classic features a higher phosphorus content to stimulate root growth, while Premium is potassium-focused to enhance fruit quality and heat tolerance. Use Classic ideally for the initial start-up fertilization in spring or on nutrient-depleted soils. Premium is the correct choice for hard-wearing lawns as well as fruit and vegetable crops in summer.
Why is a true complex granule better than a physical fertilizer blend?
Because every single grain in a complex granule contains the exact identical ratio of nutrients. In cheap, physically blended fertilizers, the varying weights of individual nutrient components cause them to separate in the bag or inside a fertilizer spreader. This results in uneven nutrient distribution in your garden and unseemly patches on the lawn.
Can Blaukorn damage plants or the soil structure?
Yes, inaccurate over-application can cause the concentrated nutrient salts to chemically burn plant roots. Since it is a highly concentrated mineral fertilizer, a large excess of nutrients draws water out of the soil. Always follow our dosage charts and water the area thoroughly after application.
Is the fertilizer dangerous for pets like dogs or cats?
Blaukorn is non-toxic when used correctly, but the concentrated nutrient salts can irritate a pet's paws and mucous membranes. Keep pets away from the area during application. As soon as the granules have completely dissolved due to thorough watering and the lawn has dried off, animals can safely access the area again.
How long can I store opened bags of this fertilizer?
When stored in a cool and absolutely dry location, Blaukorn has a virtually unlimited shelf life. Reseal opened bags airtight with durable tape or transfer the granules into a sealable plastic bucket with a tight lid. As long as no moisture reaches the product, it will not clump and retains its excellent spreading properties.
What should I look out for when I want to buy Compo Expert Blaukorn?
When buying, pay special attention to your current soil conditions and the planned timing of the application. For nutrient-depleted soils and the initial spring feeding, the phosphorus-rich Classic variant is your best choice. If you want to strengthen your lawn for the summer heat or top-dress fruiting vegetables instead, go with the potassium-heavy Premium formulation.

Expertly Verified by Our Horticultural Practice

All dosage recommendations, application notes, and variant classifications are based on long-standing experience in hobby gardening and commercial horticulture, as well as the continuous technical support provided to our customers.