SIMPLE ABOVE. DEEP BELOW.

THE
UNDERGROUND.

A FIELD GUIDE TO THE WORLD BENEATH YOUR PLANTS.

START WITH MYCORRHIZAE 101 ↗HOW TO APPLY MEGAMYCO ↗

Cannabis · Monstera · Phosphorus · Coco · Hyphae · Tomatoes

01

Mycorrhizae 101

What is mycorrhiza?Mycorrhizae 101

Mycorrhiza describes an association between a fungus and a plant root. In arbuscular mycorrhiza, fungal structures develop inside the root cortex, while other hyphae explore the surrounding medium. The plant supplies carbon compounds; the fungal partner participates in nutrient and water relationships. This is a biological relationship, not an ingredient that works independently of a living host.

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Different types of mycorrhizaMycorrhizae 101

AM (arbuscular mycorrhiza) is one kind of endomycorrhiza and the type in MegaMyco. Ectomycorrhizal, ericoid and orchid associations have different structures and fungal partners. These terms are not interchangeable. Check the plant and the fungal type together.

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How colonization happensMycorrhizae 101

Viable fungal material encounters a compatible living root. Plant and fungal signals help initiate the association, after which the fungus can enter the root cortex and form exchange structures. Colonization is a process. Putting granules near active roots creates an opportunity; it does not mean that every root is colonized immediately.

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What are fungal hyphae?Mycorrhizae 101

Hyphae are microscopic fungal filaments. Outside the root, they extend through the surrounding medium and explore small spaces beyond the immediate root surface. Their role is not the same as adding extra plant roots. They belong to the fungal partner and operate within a living exchange relationship.

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What is mycelium?Mycorrhizae 101

Mycelium is the collective network of fungal hyphae. With arbuscular mycorrhizal fungi, some fungal structures are associated with roots and others extend into the surrounding medium. The network develops with the host and local conditions. Visible white growth on potting mix is not enough to identify an arbuscular mycorrhizal network.

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What is an arbuscule?Mycorrhizae 101

An arbuscule is a finely branched fungal structure formed inside a root cortical cell. The plant maintains a membrane around it, creating a specialized interface for exchange. Arbuscules are microscopic and dynamic; they develop and are replaced as the association continues. They are not small roots or structures you can reliably identify with the naked eye.

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What is a propagule?Mycorrhizae 101

A propagule is a unit of fungal material capable of initiating colonization under suitable conditions. Depending on the inoculum, infective material can include spores, colonized root fragments and viable hyphae. Propagules and spores are not interchangeable counting terms. A viable propagule must retain the biological capacity to establish.

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Understanding product specificationsMycorrhizae 101

An organism name, a concentration and an application method describe different things. A count of spores is not automatically the same as a count of viable propagules. Check the actual specification and testing method.

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Does a higher propagule count automatically mean better?Mycorrhizae 101

A count is one piece of information. Compare the organism, measurement method, viability, application amount, placement and host suitability. A larger number on its own does not establish a better plant outcome. The practical aim is to deliver viable, suitable inoculum where compatible roots can meet it.

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Root contact mattersMycorrhizae 101

Place MegaMyco in the planting hole, around the root ball or close to active roots of an established plant. Start with 5 g for a typical transplant; use 2–5 g for small root balls or 5–10 g for larger ones. Distribution matters: bring granules into contact with compatible living roots, then water normally.

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What are spores?Mycorrhizae 101

Spores are fungal reproductive structures. In arbuscular mycorrhizal fungi, viable spores are one possible source of inoculum. Spore counts and viable-propagule counts answer different questions: not every counted spore necessarily remains viable.

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02

Meet the fungus

Rhizophagus irregularisMeet the fungus

Rhizophagus irregularis is an arbuscular mycorrhizal fungus. MegaMyco is built around this species. Species identifies the organism; it does not tell you a product’s strain, production method or performance in a particular garden. Those are separate questions.

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Species vs strainMeet the fungus

A species name identifies a taxonomic group. A strain or isolate designation identifies more specific material within that group. MegaMyco names Rhizophagus irregularis. Research on a particular strain cannot establish the result for every product containing the species.

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Life cycleMeet the fungus

The arbuscular mycorrhizal life cycle is closely connected with living roots. Viable fungal material can encounter a suitable host, develop structures in the root and extend hyphae into the surrounding medium. Conditions influence establishment; there is no single calendar that describes every association.

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How AM fungi reproduceMeet the fungus

AM fungi form spores during their life cycle. A spore is distinct from an arbuscule, the exchange structure in a root. Research on fungal reproduction is complex, so a simple product description should not imply that all fungi reproduce or establish in the same way.

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Scientific referencesMeet the fungus

Start with the sources below. They concern arbuscular mycorrhizal biology and particular research conditions. They are not MegaMyco product trials and do not substantiate a guaranteed result for this product.

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03

Plants

Compatible plantsPlants

Many flowering plants can form arbuscular mycorrhizal relationships. Compatibility describes biological potential; it does not guarantee colonization or an improvement in every growing situation. Identify the plant as precisely as possible. Our introductory plant finder covers a small, clearly identified set of plants and can expand into individual guides.

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Non-mycorrhizal plantsPlants

Brassicaceae, such as cabbage, broccoli, kale and mustard, are generally non-arbuscular-mycorrhizal. Other plants may use a different mycorrhizal association instead. Exceptions and context exist, so avoid treating a broad family-level rule as an absolute for every species. Check the plant and the fungal type together.

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VegetablesPlants

Vegetables are not a single compatibility group. Tomatoes, peppers, onions, beans and many cucurbits can form arbuscular mycorrhizal associations. Brassicas generally do not. For compatible vegetables, transplanting provides a practical opportunity for root contact. Crop nutrition, irrigation and growing conditions remain important.

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TomatoesPlants

Tomatoes can form arbuscular mycorrhizal associations. Place granules near the root ball at transplanting and water normally. Maintain balanced nutrition rather than withholding phosphorus. Compatibility is a reason to consider inoculation, not a guarantee of larger fruit, earlier harvest or a particular yield response.

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PeppersPlants

Peppers can form arbuscular mycorrhizal associations. Transplanting is a useful point to introduce granules into the root zone. Keep roots healthy and avoid excess fertilizer concentrations. Plant variety, temperature, substrate and the existing microbial community all affect the developing relationship.

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HouseplantsPlants

Many houseplants can form arbuscular mycorrhizal associations, but indoor growing does not define fungal compatibility. Check the plant’s identity. Repotting offers access to the active root zone; a healthy watering and light routine still matters. Orchid mycorrhiza is a different association and should not be confused with the fungus in MegaMyco.

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TreesPlants

Trees use different mycorrhizal types. Many trees form arbuscular associations, while others, including many pines and oaks, rely on ectomycorrhizal fungi or have more complex patterns. “For trees” is not a universal compatibility claim. Identify the species and required fungal association before selecting inoculum.

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SeedlingsPlants

Young plants need gentle handling and appropriate moisture, light and nutrition. For a compatible host, root-zone placement creates an opportunity for contact as roots develop. Handle small cells and seedlings gently. Use the amount stated on the pack.

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Specialty cropsPlants

Specialty and high-value crops vary widely in host biology and cultivation method. Confirm compatibility for the crop, then consider how the inoculum will reach active roots within the production workflow. Run a comparison under your own conditions if you need evidence for commercial decisions. Do not infer a guaranteed yield or quality gain.

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Root developmentPlants

Roots develop in response to genetics, the growing environment, water and nutrition. A mycorrhizal association can influence plant resource relationships, but fungal hyphae are not plant roots. Root appearance alone is not a reliable measure of colonization. Placement creates the opportunity; establishment requires a viable fungus and compatible living roots.

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Plant growth and yieldPlants

Research reports a range of plant responses, including benefits under some conditions and little response under others. Host, fertility, substrate, stress and resident microbes all matter. MegaMyco does not promise a fixed yield increase. Compare plants under similar conditions and avoid attributing every difference to inoculation.

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Secondary metabolismPlants

Mycorrhizal associations can affect plant physiology, and researchers study effects on secondary metabolites in different crops. Responses are context-dependent and cannot be translated into a universal flavour, aroma, terpene or potency promise.

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Does cannabis form mycorrhizae?Plants

Cannabis sativa can form arbuscular mycorrhizal associations. Published research has examined cannabis seedlings inoculated with Rhizophagus irregularis. That establishes biological relevance; it does not establish a MegaMyco-specific yield or quality claim. Place granular inoculum close to roots at transplanting, and maintain appropriate growing conditions.

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FlowersPlants

A flower is not a compatibility category. Identify the plant species before choosing inoculum. Different plants form different fungal associations, and some do not form an arbuscular association. Use the plant finder as a starting point, then check species-specific information.

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Fruit & berriesPlants

Fruit crops are a varied group. Do not assume that a product suitable for one berry plant is suitable for every other berry. Identify the species and fungal association first. For suitable hosts, transplanting gives access to the root zone.

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HerbsPlants

Herbs include unrelated plant species. The label “herb” cannot establish fungal compatibility. Identify the plant and its fungal association before deciding whether an arbuscular inoculant belongs in its root zone.

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StrawberriesPlants

Check species-level research when deciding on a growing programme. A berry category alone does not establish compatibility. Check the botanical species and its fungal association.

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MonsteraPlants

A familiar houseplant name is a starting point, not a completed compatibility check. Check the botanical species and its fungal association. Identify the botanical species and check supporting research before deciding.

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04

Growing systems

Mixing into growing mediaGrowing systems

Mixing inoculum into a medium only helps if viable material ends up close to compatible roots. Targeted root-ball placement is the clearest MegaMyco application method. No bulk mixing rate per litre of substrate has been specified for this product. Do not infer one from the transplant rate; request guidance for commercial mixing.

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Coco and soilless mediaGrowing systems

The relationship can establish in suitable soilless environments because the host is the living root, not soil alone. Substrate properties, irrigation, oxygen and nutrient supply influence establishment. Apply this granular material near roots rather than through irrigation lines. Coco use still requires appropriate nutrition and root-zone management.

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Mineral fertilizersGrowing systems

Mineral fertilizer use does not automatically prevent mycorrhizal colonization. The concentration and balance of nutrients matter, particularly readily available phosphorus. Maintain a sensible feeding program and avoid excessive salt stress. There is no need to describe mineral nutrition and living biology as incompatible categories.

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Organic fertilizersGrowing systems

Organic nutrition can be used alongside mycorrhizal inoculation. Nutrients still become available through biological and chemical processes, and excessive fertility can affect the relationship. Organic origin is not a guarantee of compatibility at every rate. Match nutrition to the crop, medium and growth stage.

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Living soilGrowing systems

Living soil may already contain compatible mycorrhizal fungi. Adding inoculum introduces additional material, but its contribution will depend on the resident community and local conditions. Protect root continuity and suitable moisture. Do not assume that adding more inoculum to an established living soil always improves the result.

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Hydrogen peroxideGrowing systems

Hydrogen peroxide is an oxidizing agent, and exposure can damage living fungi. Effects depend on concentration, contact time and the root environment. Combining root-zone sterilization with inoculation can work against the goal of establishing living biology. Ask about the exact treatment before combining it with a microbial product.

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FungicidesGrowing systems

Fungicide effects vary widely. Active ingredient, dose, placement and timing all matter, and some treatments can inhibit mycorrhizal establishment. Check the exact product with its manufacturer or an agronomist. Do not assume that every fungicide is either harmless or equally harmful to arbuscular mycorrhizal fungi.

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Other microbesGrowing systems

Check the exact organisms and formulations before combining microbial products. Different bacteria and fungi perform different roles. A claim about one tested combination cannot confirm every other combination. Ask for compatibility information for the products you actually use.

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TrichodermaGrowing systems

Trichoderma is not the same organism as Rhizophagus irregularis. Check strain- and formulation-specific information before combining products. No universal compatibility or synergy claim is made for MegaMyco.

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pHGrowing systems

Root-zone pH influences nutrient availability, plant health and microbial activity. Appropriate conditions depend on the plant and growing medium; a single pH target is not right for all situations. Keep pH suitable for your crop and nutrition program.

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The gardenGrowing systems

A garden can contain many plants and an existing community of soil organisms. Adding inoculum is not automatically necessary. Check your plant, consider what is already growing in the soil, and think about how granules will meet active roots.

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PeatGrowing systems

Peat identifies a growing-medium component, not a guarantee of fungal establishment. Consider the plant, nutrient programme, irrigation and the root-contact placement of the granules. Follow the directions on the pack.

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Potting mixGrowing systems

Check what is already in the potting mix, including added fertiliser and microbial inoculants. Repotting provides access to roots. The plant must still be a compatible host.

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Outdoor soilGrowing systems

Outdoor soil already contains living communities. The presence of soil alone does not tell you which fungi are present or whether extra inoculation will contribute. Check the plant and keep expectations specific to your conditions.

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Raised bedsGrowing systems

A raised bed describes where you grow, not which fungal partnership your plants can form. Identify the crop and growing medium. Put granules at the roots of compatible transplants rather than treating all bed occupants as equivalent.

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Nursery productionGrowing systems

Map application to the transplant stage where root contact is practical. Request verified directions and product documentation. Commercial comparisons should record crop, medium, nutrition, application timing and untreated comparison plants.

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05

Questions

Mycorrhiza and phosphorusQuestions

Phosphorus is essential for plant metabolism. Fungal hyphae can explore beyond the immediate root zone and participate in phosphorus acquisition. High readily available phosphorus can reduce colonization or the plant’s investment in the partnership. The aim is balanced nutrition, not deliberate deficiency. There is no single phosphorus threshold that fits every medium and plant.

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Mycorrhiza and nitrogenQuestions

Arbuscular mycorrhizal fungi can participate in nitrogen acquisition and transfer, with the contribution varying by host, fungus and environment. They do not fix atmospheric nitrogen in the way certain plant-associated bacteria do. MegaMyco does not replace a plant’s nitrogen requirements or a suitable nutrition program.

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Mycorrhiza and waterQuestions

Mycorrhizal associations can influence plant-water relationships through fungal exploration and changes in root and plant physiology. Outcomes depend on the plant and the growing environment. This does not remove the need for watering or make a plant drought-proof. Manage irrigation, drainage and root-zone oxygen as carefully as before.

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When should I inoculate?Questions

Transplanting gives direct access to the root ball and planting hole, making it a useful moment to introduce granules. Early placement lets developing roots encounter the inoculum. Established plants can also be treated in the active root zone. Keep the focus on root contact rather than a weekly calendar.

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How much should I use?Questions

Start with 5 g per plant for a typical transplant. Use 2–5 g for small plants and rooted seedlings, or 5–10 g for larger root balls. These are practical starting amounts for compatible plants, selected by root-ball size. Place the granules at the roots, then water normally. Follow your pack if its directions differ.

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Existing plantsQuestions

Choose the starting amount by root-ball size: 2–5 g for small plants, about 5 g for a typical plant, or 5–10 g for a larger root zone. Divide the total amount between several small holes near active roots. Avoid damaging roots, cover the holes and water normally. The dose is per plant, not per hole.

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Can you apply too much?Questions

Higher application amounts do not automatically produce a stronger relationship or better plants. Follow the guidance and focus on active roots. Unnecessary excess can waste product and add more carrier than needed. No product-specific toxicity threshold has been supplied, so do not interpret “living biology” as permission to use unlimited amounts.

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How long colonization takesQuestions

Colonization develops over time and depends on the host, fungal viability, temperature, fertility and root activity. It is not an instant visible reaction. No fixed MegaMyco colonization timetable is claimed. Apply at a useful stage, maintain suitable conditions and distinguish a biological process from a guaranteed deadline.

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Can you see mycorrhizal fungi?Questions

Arbuscules and diagnostic root structures are microscopic. Specialists often stain roots and examine them under a microscope to assess colonization. White threads on a pot’s surface can belong to many organisms and do not prove MegaMyco has established. Healthy-looking roots alone are also not a confirmation.

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What does in vivo mean?Questions

In vivo describes propagation in association with living host plants. It describes a production method, not a property of every mycorrhizal product.

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StorageQuestions

Follow the storage conditions and expiry date on your pack. Keep the batch details for reference.

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Does it expire?Questions

Follow the batch expiry date and storage instructions on the pack.

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What is inside MegaMyco?Questions

MegaMyco is a granular mycorrhizal inoculant built around Rhizophagus irregularis. See the product label for full specifications and batch details.

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Granular vs powderQuestions

Granular and powder describe physical formats, not a ranking of biological quality. Choose according to the directions, viable organism and application method. MegaMyco is a granular product for root-zone placement; do not assume it is suitable for a dripper or spray system.

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What about chlorine?Questions

A blanket answer would need more information about your water and treatment. Identify the disinfectant, concentration and how it reaches the root zone. Check the product label and ask us about your water treatment. Ask about the actual treatment rather than assuming every tap-water supply is the same.

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Do I need it every watering?Questions

MegaMyco is applied as granules close to roots. It is not presented as a feed to add at every watering. Follow the directions on the pack and focus on the opportunity for root contact.

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Start with the plant

WILL MEGAMYCO WORK
WITH MY PLANT?

Search a plant to check its evidence status.

A missing entry does not establish compatibility. Check the plant species.

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