MO Bacter Organic Lawn Fertiliser & Moss Killer

Save £12.19
SKU: 189168

Weight: 20kg
Sale price£31.50 Regular price£41.66 ex. VAT
£37.80 inc. VAT
(minimum of 1)


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Endorsed by the RHS

Manufactured in Belgium by Viano, Mo Bacter Organic Lawn Fertiliser is an organic granular fertiliser which eliminates moss, feeds your grass, and improves the soil all in one. It releases its nutrients consistently and evenly over a twelve-week period and is an ideal moss killer. While feeding the turf with the nutrients it needs, the high levels of potassium are ingested by the moss. In turn this causes the moss to breakdown and be digested by the bacteria inoculated in the fertiliser. It will destroy the moss without leaving any black debris - leaving your lawn looking clean and healthy. 

MO Bacter - Endorsed by Royal Horticultural Society

Furthermore, users will not have to scarify their grass after applying Mo Bacter and if the product is spread beyond the lawn, it will not burn plants. Also, unlike normal fertiliser, Mo Bacter Organic Fertiliser will not stain stonework, patios or paths.  

Another advantage of Mo Bacter being an organo-mineral fertiliser is that it is harmless to animals and wildlife.  

This unique product can also be used to remove roof moss.  

For best results, it is recommended to apply Mo Bacter Organic Lawn Fertiliser & Moss Killer in the spring, or early summer to remove moss. To keep moss away in winter, apply the product in late summer or early autumn.  

Viano MO Bacter is at its most effective when the SOIL temperature is 10°C or more.

Ingredients: Nitrogen, phosphorus and potassium, in a 5-5-20 (+3% MgO) analysis,. plus bacteria (bacillus spp.). A native bacterial species found naturally in soils; but when added to fertiliser, consumes dead material like thatch and moss.

Key Features of MO Bacter

  • Unique slow release fertilisers which feed your lawn for over three months
  • Apply from March through to September
  • Destroys moss by secondary action without leaving debris
  • Will not stain patios or stonework
  • Removes the need for raking out dead material after use
  • Being organic it is not harmful to animals or children
Longevity Bag Size kg Application Rate g/m2 Bag Coverage m2
12 weeks 20 100 - 150 175 - 200

MO Bacter Fertiliser Analysis

Ingredient Oxide Value Elemental Value
Total Nitrogen (N)   5.00%
    Organic bound N derived from; 3.50%
        Feather meal
        Cocoa shells
    Ammoniacal Nitrogen (N)   1.50%
Phosphorus Pentoxide (P2O5) 5.00% 2.18% P
Potassium Oxide (K2O) soluble in water 20.00% 16.60% K
    Magnesium Oxide (MgO) 3.00% 1.81% Mg
Total organic matter derived from feather meal and cacao shells 25%

Application Information

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec


Period Lawn Construction g/m2 Lawn Maintenance g/m2 Lawn Condition Soil Temp. Range
SPRING - 100 - 150
(in combination with scarification)
With Moss 5 - 10℃
SPRING - 50 - 100 Without Moss 5 - 10℃
AUTUMN - 50 - 100
(from the end of August)
K - Fertiliser 5 - 10℃
Fertilising is possible immediately after mowing the grass. In dry periods (1 week without rain) watering is recommended.
After treatment, wait 2 - 3 days before mowing the grass.

Spreader Settings

Spreader Application Rate Setting Passes Spread Width (m)
(cone 8)
50 g/m2 0 ½ 2 3.4
100 g/m2 Y 3
150 g/m2 Z 4
Flex Select 50 g/m2 23.5 2 3.2
100 g/m2 27 3
150 g/m2 30 4

For further information regarding MO Bacter or to discuss a bulk order, please contact our technical sales team on 01952 897917.

Find more information in our guides How To Weed and Feed Your Lawn and How To Deal with Moss

Technical Information

SKU Product File
189168 20kg Safety Data Sheet (PDF)

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