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I can't recommend it highly enough as a broad-spectrum systemic weedkiller; it's safe for pets & children and does an incredibly efficient job. I used it on a thick bramble patch that was covering a broad path. With a very light spraying, just covering the leaves, I had results that I had never seen before; I sprayed these brambles and got nothing for three weeks but on the fourth week, they were all completely dead. Being a systemic weedkiller, it kills weeds (and Moss) right down to the root. The only drawback is that you have to use it when weeds are growing - so from about March to November - for it to be effective (the paperwork recommends weeds to be 'actively growing' which shortens the season but I have found it to have an effective use of about a month either side of the recommended season).
As an aside, this herbicide needs a licence / certificate and is therefore not openly available to the consumer market, it is quite feasible and fair to charge for spraying at a good balance between the consumer & professional cost of the actual herbicide.
For example, if I were to use the consumer equivalent at a cost to me of £45, I would feel justified in charging £45 on the top of my bill for the herbicide alone. If I then used the professional version and used only £7 worth of herbicide, at what amounts to the same concentration as the consumer variety (which would have cost £45), I would charge a rate of maybe £25 - £30. That's a saving to the client of £15 - £20 compared to the £45 if they had done the job themselves and it begins to pay for your time, training & expertise. I've probably been a little conservative in my figures but if you do the calculations yourself (which are a little long-winded but worthwhile - and you can find the right figures for your calculations if you google Roundup ProBiactive), you'll find out the value of its use.
I'm probably telling you something that you already know, but maybe this can be of use to some of the rest of the network.
http://www.sweepfast.com/weedkillers.htm
These are two links that I have just found on a google search. I don't know if you're on the Landscapes Direct mailing list but they also supply it, but don't seem to come up on google.
We are PA1 and PA6 accredited and if you send me some photos I will speak to our friendly Avoncrop rep about your problem and let you know the answer.
You could use a Biocide called Qualgex. It's active ingredient is Ammonium Chloride and Citric Acid and a Wetting Agent. It is billed as 'an ideal maintenance product for local authorities, schools, commercial premises'. It controls the Algae and Mosses and Lichens by killing the plants physical make up, their Chloroplasts - the bit that makes plants green and produce sugars from sunlight. Application rates of 5 Litres in 100 Litres of Water per 500 sqm or basically 100 Lts per Hectare (10,000 sqm). £62.60 per 5 Lts plus Carriage and VAT. Works out at £1252.00 net per Ha or £0.126 pence per single square metre.
We have experience of a Glyphosate based translocated weed killer successfully killing moss (and other weeds and grasses) in such areas. The trick is to use a higher water volume and the wetter element of the Glyphosate penetrates the moss and kills it. Apply at 5 lts per Ha in minimum 200 lts of water. Will of course kill grass lawns too so care needs to be taken when spraying to consider run off or drift. Most professional formulation of a 360 grams/litre strength Glyphosate do not have a hazard classification on the label and the active neutralises as soon as it hits soil. Sample cost £50.00 per 5lts plus Carraige and VAT
Hope this helps.
I bought my bottle of Roundup Probiactive about 2 years ago and was asked to give a certificate number when I ordered it. I'm not sure whether it's still the case that - as you say a 5 litre bottle goes a long way. I'm guessing that the concentration of the glyphosate in the professional product prohibits its use by domestic consumers - hence the weaker domestic product.
I was lucky enough not to have to pay for the Knapsack training as the Garden Centre where I used to work paid for me. If you do any business-to-business work, you may be able to get a small grant towards the fees (I think it was about 25% of the total cost but that was about 4 year ago and it may be location-specific). Usually the college or training provider will put you in touch with the appropriate council department when you enquire.
Well worth a try in my opinion
here is a link to their site http://www.artificialgrassmaintenance.co.uk/mmc_pro_moss_killer_alg...
if you do get some let me know how you get on
John the Gardner
http://www.artificialgrassmaintenance.co.uk/mmc_pro_moss_killer_alg...
John the Gardener
Andrew Fereday said:
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