GP Baumfit • Professional tree fertiliser 6-4-5 with mycorrhiza

GP Baumfit • Professional tree fertiliser 6-4-5 with mycorrhiza

ORGANIC LINE • MYCORRHIZA • TREE AND SHRUB FERTILISER

Professional organic tree fertiliser with mycorrhiza: symbiosis between roots and the mycorrhizal fungal network as a foundation for woody plant condition

Short description

GP Baumfit is a new-generation professional organic tree fertiliser specifically developed for trees, shrubs and hedges. NPK 6-4-5 enriched with 65.5 % organic matter, magnesium, sulphur and, crucially, microorganisms in the form of endomycorrhizal and ectomycorrhizal fungi provides a complete solution for new planting and maintenance of existing trees.

The mycorrhizal fungi form a lasting symbiosis with roots. Their hyphal network effectively increases root absorption area by up to 100–1000 times, supplying water, phosphorus, nitrogen and microelements from soil layers inaccessible to primary roots. In return, plants supply photosynthesis products (glucose). The fungi also produce natural growth hormones, auxins, gibberellins and cytokinins, stimulating root development and increasing stress resistance.

The product works for up to 2–3 months after one application. Completely safe for children, pets and the environment. Form: dust-free, low-chloride granules.

Key properties

Professional organic fertiliser with living endomycorrhiza and ectomycorrhiza;

Complete NPK 6-4-5 profile enriched with Mg, S and Na;

65.5 % organic matter: substrate for microflora and a source of stable humus;

Mycorrhizal symbiosis increases root absorption area by up to 1000 times;

Natural growth hormones (auxins, gibberellins, cytokinins) synthesised by fungi;

Intensifies rooting in new plantings;

Regenerates and strengthens roots of existing trees and shrubs;

Increases resistance to drought, frost, wind and disease;

Reduces transplant shock during planting;

Effective for up to 2–3 months after one application;

Low chloride content, safe for sensitive species;

Dust-free granules for easy application during planting and in established stands.

Role in the tree and shrub maintenance programme

GP Baumfit has a unique strategic role in woody plant maintenance: it is the only GreenPlan product combining a complete nutrient profile with living mycorrhizal fungi. It fulfils two parallel agronomic roles:

Role I: starter fertiliser for new planting, applied directly into the planting hole for trees, shrubs and hedges. The fungi colonise young roots before transplant shock develops, resulting in faster rooting, better establishment and fewer losses in the first season.

Role II: maintenance fertiliser for established stands, applied every 2–3 months in the root zone of mature trees and shrubs. The fungi regenerate the symbiotic soil network and strengthen water and nutrient uptake from deeper layers, improving overall condition, growth and stress resistance.

Mode of action: mycorrhizal symbiosis

Mycorrhiza (Greek mykos: fungus; rhiza: root) is a natural symbiosis between soil fungal hyphae and woody plant roots, widespread in forest ecosystems. It occurs naturally in more than 90 % of plant species. In human-influenced parks, gardens and urban green spaces, cultivation, excavation, chemicals or sterile urban soils frequently disrupt the network. GP Baumfit rebuilds it in a targeted, controlled way.

The product contains two forms of mycorrhiza:

Ectomycorrhiza (external): hyphae surround the root, forming a fungal mantle and Hartig net. Typical of forest trees including pine, oak, birch and beech.

Endomycorrhiza (arbuscular, internal): hyphae enter root cells and form structures called arbuscules. Typical of most fruit trees, ornamental shrubs, hedges and garden plants.

Combining both forms ensures biological versatility: GP Baumfit works with forest trees and typical ornamental and fruit species alike.

Physiological benefits of mycorrhizal symbiosis:

Increases effective root absorption area by 100–1000 times, accessing water and nutrients from layers beyond the primary roots.

Accesses phosphorus in unavailable forms: fungi release enzymes that dissolve soil-bound phosphates.

Synthesises natural growth hormones: auxins (root development), gibberellins (shoot growth), cytokinins (cell division).

Creates biological barriers against soil pathogens: symbiotic fungi compete for space and substrate.

Strengthens resistance to drought, salinity, heavy metals and urban stress.

Applications

New planting of deciduous and coniferous trees;

New planting of ornamental and hedging shrubs;

Planting fruit trees (apple, pear, plum, cherry, walnut);

Planting standard and bush roses;

Maintenance fertilisation of mature trees in parks, gardens and avenues;

Regeneration of tree stands after construction work or mechanical damage;

Revitalisation of weakened hedges;

Perennial bedding plants and perennials with demanding root systems;

Urban green spaces and trees exposed to human-induced stress.

Technical data

Declared composition

Starting materials: plant materials from the food, beverage and animal feed industries; category 3 animal by-products under Regulation (EC) 1069/2009; potassium sulphate from vinasse processing; living microorganisms (mycorrhiza).

Application rate and programme

Ornamentals: 80–100 g/m². Trees, shrubs, hedges: 100–200 g/m².

Application programme:

Initial application during planting: upper end of the range (150–200 g/m² for trees and shrubs). Apply directly into the planting hole, mixed with the intended planting soil. Note: avoid direct granule contact with roots.

Spring application in established stands: standard rate (100–150 g/m² for trees and shrubs). Apply in the root zone under the canopy projection, lightly mixed into the topsoil.

Summer application, optional during intensive growth: standard rate. Maintains the effect during high nutrient demand.

Autumn application: lower end of the range (100 g/m²). Strengthens roots before winter.

Application instructions

New planting: 1. Dig a hole appropriate to the root ball. 2. Spread fertiliser evenly over its base and sides, mixing well with native soil. 3. Insert the root ball, avoiding direct root contact with granules. 4. Backfill, firm the soil and water generously (at least 20–30 L per tree).

Established stands (maintenance fertilisation): 1. Drill 1–2 holes, 20–30 cm deep, within the canopy projection; for large trees, 4–6 around the circumference. 2. Divide fertiliser between holes according to species and age. 3. Cover with soil. 4. Water the root zone generously to activate mycorrhiza and organic matter mineralisation.

Alternatively, for young trees and shrubs, spread over the canopy projection, lightly incorporate into topsoil with a hoe or rake and water generously.

Good professional practice

Optimum conditions: soil temperature ≥ 8 °C and moist soil. Mycorrhizal fungi need moisture to colonise roots, so generous watering after application is essential.

Do not apply simultaneously with synthetic fungicides, which may inhibit mycorrhizal development. Minimum interval: 14 days.

For fruit tree care, combine GP Baumfit and GP Organik: GP Baumfit starts and regenerates roots; GP Organik provides cyclic nutrition and humus building.

For trees affected by construction, excavation or mechanical damage, apply first immediately after the stress subsides, then again after 2–3 months.

No waiting period is required; the fertiliser is safe for children, pets and beneficial organisms.

Frequently asked questions

What is mycorrhiza and why is it important? It is a natural symbiosis between soil fungi and plant roots, occurring in more than 90 % of plant species. Urban and garden environments often disrupt this network. GP Baumfit rebuilds it: fungi enter the root system and form hyphal networks increasing the absorption area by up to 1000 times.

Why does GP Baumfit contain two forms of mycorrhiza? Ectomycorrhiza is typical of forest trees such as pine, oak, birch and beech. Endomycorrhiza is typical of most fruit trees, ornamental shrubs, roses and bedding plants. Combining them ensures effectiveness across woody species.

Does GP Baumfit work on mature trees? Yes. Mycorrhiza benefits trees at every age. In mature plants it rebuilds weakened symbiotic networks, improves water uptake from deeper layers and strengthens resistance to drought and disease. Effects are particularly visible under human-induced stress in urban avenues, parks and post-construction areas.

How quickly does it work? Mycorrhizal fungi colonise roots within 2–4 weeks when moisture is sufficient and soil temperature ≥ 8 °C. Visible effects, including longer shoots, improved leaf turgor and stronger stress resistance, typically appear after 6–10 weeks.

Can it be used when planting fruit trees? Yes, this is a main application. Initial application reduces transplant shock, accelerates rooting and significantly improves establishment, particularly under adverse conditions such as late spring, early autumn or poor soils.

Is mycorrhiza environmentally safe? Yes. It is a natural, widespread symbiosis. GP Baumfit builds a network found naturally in forest ecosystems. The fungi are completely safe for children, pets, beneficial organisms including bees, and aquatic organisms.

Can GP Baumfit be used under ecological and organic conditions? Yes, the formulation meets organic farming standards. It uses only components permitted in organic cultivation: plant materials, category 3 by-products, potassium sulphate and living microorganisms.

Can GP Baumfit be combined with GP Organik? Yes, this is recommended in professional programmes. GP Baumfit is applied at key moments (planting, spring activation, autumn regeneration), while GP Organik provides cyclic nutrition and soil building. Leave 14 days between applications.

Is it suitable when transplanting mature trees? Yes, this is a particular indication. Transplanting a mature tree reduces the root system by 40–70 % and causes severe physiological shock. Applying GP Baumfit in the destination planting hole and remaining root zone accelerates mycorrhizal network recovery and significantly improves establishment chances.