Rootgrow Mycorrhizal Fungi

Rootgrow Mycorrhizal Fungi

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Minimum Order Value

Please note that there is a minimum order value of £10.00 + VAT, excluding delivery.


Delivery to UK mainland is just £5.95 inc. VAT (subject to postcode surcharges), regardless of the number of items purchased.


Rootgrow™ simply speeds up an existing natural process. Fungi contained in Rootgrow will begin to colonise the plant or tree roots, extending the root system into the surrounding soil via an extensive network of fungal filaments.

Top gardeners like Monty Don recommend using Mychorrizal Fungi when planting bare root plants.

Rootgrow™ enhances a plant’s root system so a newly planted plant:

  • Finds more food, finds more water.
  • Needs less fertiliser.
  • Establishes quicker and reduces failure rates (which can be improved even further when used in conjunction with Broadleaf P4).
  • Has increased tolerance to drought and difficult soil conditions.

These fungi are completely natural and organic and native to UK soils and are suitable for organic growing.

Mycorrhizal fungi are widespread throughout nature and are a fundamental reason for normal plant growth and development. Over 90% of all plants associate with these natural organisms as a mechanism for sustained nutrient and water supply.

Shortly after application, the fungi contained in Rootgrow will begin to colonise the plant or tree roots, extending the root system into the surrounding soil via an extensive network of fungal filaments (up to 20 metres have been recorded in a sugar cube of soil). These thread-like filaments extract nutrients and water from a large soil volume and exchange them for carbon from the plant. This secondary root system, when established, links the root systems of adjacent plants or trees and helps share, more efficiently, nutrient resources throughout the plant community.

Great for trees, hedges and shrubs also vegetables, flowers and general garden use.

Rootgrow does not work on Brassicas, Rhododendrons, Azaleas, Heathers, Cranberries or Blueberries.

RHS endorsement

Rootgrow™ and the Royal Horticultural Society

When Rootgrow™ was first introduced to RHS gardeners in 2000 it appeared to be an ideal product to fit in with their desire to grow plants with less dependence on chemical fertilisers and using natural, truly organic methods. RHS gardeners then went on to rigorously evaluate the Rootgrow™ to see just how well it actually worked! After 10 years RHS gardeners made the unprecedented move to formally endorse and license Rootgrow™, the first time a planting aid had ever been deemed worthy of this type of endorsement.

RHS gardeners find plants treated with Rootgrow™:

  • Have superior establishment with better natural vigour
  • Overcome replant problems more successfully
  • Have better developed root systems
  • Are better able to cope with conditions of drought
Additional Details

Available in four sizes:

360g pouch
1kg pouch
2.5 litre tub
5 litre tub

See below for dosage rates.

Dipping gel is provided with all sizes and comes with full instructions. When mixed together with water, as directed, it will form a perfect dipping solution to ensure maximum coverage of the mycorrhizal fungi on the roots of plants.

Plant Type Dose Rate
Bare root trees and hedging
Note: for best results use Rootgrow with gel dip – see packs for more details.
One 360g pack will treat approx 100 x 2ft bare root plants
One 1kg pack will treat approx 300 x 2ft bare root plants
One 2.5 Litre tub will treat approx. 750 x 2ft bare root plants
Trees and other large root-balled plants 75g will treat up to 15L container grown trees
Cell grown plants One 360g pack will treat approx. 125-150 plants.
Seed trays and hanging baskets Add 1 x scoop or 2 heaped teaspoons per 2 litres of compost
Roses, trees, shrubs and plants in containers e.g. vines, ornamentals, climbers 2 scoops or 5 heaped teaspoonfuls for each 5L root ball in the planting hole.
Vegetables e.g. strawberries, leeks, beans, tomatoes, lettuce etc... 2ml or ½ teaspoonful in planting hole when pricking out or planting. 1-2 scoops per metre for seed rows
House plants Add 5 heaped teaspoonfuls at transplanting or add 1-2 teaspoonfuls into the root zones around the pot.
Turf or other grasses or wild flowers Add at 2 scoops per square metre (area) or below seeds in row per metre.


Can granules be used without gel
Rootgrow features
Will it remain viable once opened

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