Toggle Nav
  •  

    FREE DELIVERY

    ON ORDERS OVER £50
  •  

    RETURNS & EXCHANGES

    IF YOU’RE NOT 100% HAPPY
  •  

    GIFT VOUCHERS

    TO GIVE THE PERFECT GIFT

RHS RootGrow 360g

Product Code:
01529
£9.99
This is the first and currently the only plant or soil treatment to be licensed by The Royal Horticultural Society.

RHS Gardeners find plants treated with Rootgrow
Have superior plant establishment with better natural vigour
Overcome re-plant problems more successfully
Have better developed root systems
Are better able to cope with conditions of drought
A single application of Rootgrow will support a plant for its entire lifetime.

"At RHS Garden Wisley, we use rootgrow mycorrhizal fungi when planting trees and shrubs and we are now starting to use it when planting perennials. For me, using rootgrow mycorrhizal fungi has become one of the most important ingredients to ensure planting success"
Colin Crosbie - Curator RHS Garden Wisley


How do mycorrhizal (pronounced my-cor-y-zal) fungi benefit plants?
In its simplest sense mycorrhizal fungi do everything plant roots do, just better.
When new plants are planted with Rootgrow it takes only 2-4 weeks under normal conditions for these fungi to start benefiting plants. In that time they attach themselves to the plant's root system and grow out rapidly into the soil, searching for nutrients and water. They essentially become part of the plant's own root system.
The benefits to plants are; Better nutrient uptake. These fungi are so much thinner and finer than the plant's own roots they can therefore find nutrients in the soil far more efficiently than the plant's own coarse roots. They are especially good at finding nutrients responsible for flowering and fruiting such as Phosphorus and Potassium. As they can explore a much greater amount of soil than the plant's own roots they are also far more likely to find trace elements and the rare nutrients that all plants need to grow well.

Drought tolerance
Mycorrhizal fungi are an essential part of a plant's ability to combat drought. Leaves and stems have developed mechanisms to combat drought such as silver leaves, waxy leaves and hairy leaves but these adaptations on their own aren't enough if the plant doesn't have its friendly fungal partner on its roots.
Mycorrhizal fungi hold onto water in soils like a sponge.


Establishment in difficult soils
Mycorrhizal fungi will enable plants to establish and thrive even in difficult soils. In poor sandy soils the mycorrhizal fungi will be able to find scarce nutrients and hold onto water. In clay soils these fungi will be able to unlock nutrients from the soil acting like a clay breaker.

Useage Guidelines
for a 9cm pot use 5 grams of rootgrow (a 360 gram sachet will cover approx. 72 plants)
for a 2-3 litre pot use 25 grams of rootgrow (a 360 gram sachet will cover approx. 18 plants)
for a 4-5 litre rose use 50 grams of rootgrow (a 360 gram sachet will cover approx. 9 plants)
for a 10-15 litre tree use 50 grams of rootgrow (a 360 gram sachet will cover approx. 5 plants)


Empathy is about making a choice to garden with minimal use of chemicals whilst maximising plant growth and health. Empathy products are biological, they will benefit your plants not just over a few months but through their lifetime and are designed to treat the soil as well as the plant. Empathy supports the RHS mission for 'Sharing the best in Gardening'.
Empathy (Plantworks)
This is the first and currently the only plant or soil treatment to be licensed by The Royal Horticultural Society.

RHS Gardeners find plants treated with Rootgrow
Have superior plant establishment with better natural vigour
Overcome re-plant problems more successfully
Have better developed root systems
Are better able to cope with conditions of drought
A single application of Rootgrow will support a plant for its entire lifetime.

"At RHS Garden Wisley, we use rootgrow mycorrhizal fungi when planting trees and shrubs and we are now starting to use it when planting perennials. For me, using rootgrow mycorrhizal fungi has become one of the most important ingredients to ensure planting success"
Colin Crosbie - Curator RHS Garden Wisley


How do mycorrhizal (pronounced my-cor-y-zal) fungi benefit plants?
In its simplest sense mycorrhizal fungi do everything plant roots do, just better.
When new plants are planted with Rootgrow it takes only 2-4 weeks under normal conditions for these fungi to start benefiting plants. In that time they attach themselves to the plant's root system and grow out rapidly into the soil, searching for nutrients and water. They essentially become part of the plant's own root system.
The benefits to plants are; Better nutrient uptake. These fungi are so much thinner and finer than the plant's own roots they can therefore find nutrients in the soil far more efficiently than the plant's own coarse roots. They are especially good at finding nutrients responsible for flowering and fruiting such as Phosphorus and Potassium. As they can explore a much greater amount of soil than the plant's own roots they are also far more likely to find trace elements and the rare nutrients that all plants need to grow well.

Drought tolerance
Mycorrhizal fungi are an essential part of a plant's ability to combat drought. Leaves and stems have developed mechanisms to combat drought such as silver leaves, waxy leaves and hairy leaves but these adaptations on their own aren't enough if the plant doesn't have its friendly fungal partner on its roots.
Mycorrhizal fungi hold onto water in soils like a sponge.


Establishment in difficult soils
Mycorrhizal fungi will enable plants to establish and thrive even in difficult soils. In poor sandy soils the mycorrhizal fungi will be able to find scarce nutrients and hold onto water. In clay soils these fungi will be able to unlock nutrients from the soil acting like a clay breaker.

Useage Guidelines
for a 9cm pot use 5 grams of rootgrow (a 360 gram sachet will cover approx. 72 plants)
for a 2-3 litre pot use 25 grams of rootgrow (a 360 gram sachet will cover approx. 18 plants)
for a 4-5 litre rose use 50 grams of rootgrow (a 360 gram sachet will cover approx. 9 plants)
for a 10-15 litre tree use 50 grams of rootgrow (a 360 gram sachet will cover approx. 5 plants)


Empathy is about making a choice to garden with minimal use of chemicals whilst maximising plant growth and health. Empathy products are biological, they will benefit your plants not just over a few months but through their lifetime and are designed to treat the soil as well as the plant. Empathy supports the RHS mission for 'Sharing the best in Gardening'.

We offer a wide range of delivery options to suit everyone’s unique requirements. You will find the delivery options applicable to each item under the delivery tab on the product page.

The below delivery charges apply to the UK Mainland Only, please call us on 01622 842042 before placing an order from the Scottish Highlands, Northern Ireland, or any offshore island to confirm delivery service & prices.

Delivery Options
  • Free delivery on orders over £50
  • Basket weight below 2.5KG - £2.99 - Royal Mail 48
  • Basket weight above 2.5KG - £4.99 - DPD Next Working Day*(*Excludes Weekends)

Returns Policy

Whether the item is no longer needed, you have changed your mind, or ordered an incorrect item we will be more than happy to offer a refund or exchange providing the goods are returned to us in their original, unopened condition with packaging within 28 days of you receiving them.

How do you rate this product?
20% of 100
40% of 100
60% of 100
80% of 100
100% of 100

Latest Tweets