Gard S

An organic liquid formulation of garlic extract containing sulphur, approved as a restricted input by both the Soil Association and Organic Farmers and Growers.

Most agricultural and horticultural crops including brassicas, carrots & swedes, lettuce and leafy salads.

To correct nutrient deficiency and promote crop health.

Pack Size
5 litres

An organic foliar nutrient which stimulates plants to create an environment around leaves and roots that is uninviting to a range of pests such as aphids, thrips, whitefly, spider mites, vine weevil and root flies, as well as providing a natural source of sulphur.

Gard S is not a pesticide, it does not control the pest but it boosts the plants tolerance to pest attack.


Gard S also contains a source of Sulphur.  

Sulphur has been traditionally supplied by atmospheric deposition, animal slurries and an impurity of mineral fertilisers. The implementation of the Clean Air Act, the move to arable farming and changes in fertiliser usage have resulted in lower applications of sulphur to many crops throughout the UK. Sulphur deficiencies have been observed on a number of crops, notably oilseed rape, 2nd and 3rd cut silage, and vegetable brassicas.

The benefits of sulphur application have been found on the crops above and on cereals and sugar beet. The mobility of sulphur in the plant is poor, thus yellowing is seen on the newest growth rather than on older leaves. This distinguishes sulphur deficiency from nitrogen deficiency. Yield benefits of sulphur application have been seen when sulphur deficiencies have not been diagnosed.


Use Gard S as a deterrent against a range of insect pests or to correct sulphur deficiency. Foliar uptake will be enhanced by the addition of SW7¹.

Apply 1-2 l/ha, in a minimum of 200 l/ha water.

The spray tank should be filled with half the required water. If applicable, add the required amount of SW7 to the water before the Gard S. After shaking the container, measure the required amount of Gard S and add to the tank whilst maintaining constant agitation. Add remaining water to correct dilution and spray.


You should only apply imported nutrition such as the Organomex range of products with the prior approval of your certification body. These products are a restricted input for soil association members and you will need to comply with their procedures. It is often possible to have a plan of action for your growing of organic crops which includes this type of product as required by the crop in the growing season and this is best setup prior to the season to save time when a crop is suffering stress or slow growth.

¹ SW7 may be used as an adjuvant. Choose SW7 if it will be difficult to achieve good coverage, the leaves are waxy or tightly layered, or with dense crop canopies. SW7 should be added at 0.1% of the spray volume, e.g. 100 ml in 100 litres of water. Maintain agitation and apply immediately after mixing.

Do not apply when crop is showing deficiency symptoms, is under stress, or in adverse weather conditions.


For further information on timing and application rates, please refer to the Gard S Technical Information for Horticulture PDF.


HORTICULTURE - foliar products for horticulture

AMENITY - foliar products for turf and amenity





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