Forum home Problem solving

Evergreen 4in1

used this stuff a week ago, some green but more black and when walked on it is still marking the deck etc 


  • FairygirlFairygirl Posts: 54,023
    It shouldn't be applied when conditions are as dry as it's been. The ground needs to be damp before application, and it needs watered in if there's no rain after a few days. Perhaps you've over applied too.
    It happens all the time I'm afraid. There are several threads re this = especially this year.
    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
  • glasgowdanglasgowdan Posts: 632
    The black is moss... and what fairygirl says, even application at the right rate, and plenty water, are essential
  • ClaringtonClarington Posts: 4,949
    Are you watering your lawn regularly?

    Otherwise I'm not sure this would have been worth applying. My lawn is now dried straw- not pretty but I prefer to save water than waste it on the lawn (lawns are remarkably tolerant and it'll pop back up bright and green again when the weather changes).

    (I've made the assumption that you're in the UK / heatwave zone).

    Black is areas that have been killed off: moss and weeds. This will die down and hopefully be replaced by grass. 

    What do you mean by marking the decking?
  • DovefromaboveDovefromabove Posts: 86,168
    The active ingredient which kills the moss is Ferrous sulphate which will cause rust stains which are difficult to remove.

    The pack of Evergreen 4 in 1 lawn treatment will have had instructions and warnings very similar to these file:///C:/Users/Alison/Downloads/Evergreen%20Lawn%20Sand%20Label.pdf

    You'll see it warns against applying in dry periods.  It also warns against walking on it until it's well watered in and not allowing it to get onto paving or other surfaces as it can cause staining.

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

  • BigDog AlBigDog Al Posts: 9
    Yeah looked up about the marking and it’s the iron in the feed that marks up surfaces, found a rust remover and it seems to be working, garden wasn’t bone dry as I had watered it the day before applied, we’ve had a few rain showers this week but I’m going to give it a good soaking anyway, time will tell if it was worth doing but I seem to be finding more negative reports of using feed like this than positive. I did the walking briskly thing and never reapplied on any areas, fingers crossed 
  • LynLyn Posts: 22,888
    edited July 2018
    If applied correctly it is a very good product and well worth doing. .
    Gardening on the wild, windy west side of Dartmoor. 

  • KT53KT53 Posts: 8,482
    I wonder how you are supposed to avoid walking on the area you've applied it to if you are using a spreader?
  • BigDog AlBigDog Al Posts: 9
    The spreader is part of the handle but I thought I hadn’t walked over treated areas but my deck says different, a lot of the Black is gone today so I’m going to try a good raking 
  • BigDog AlBigDog Al Posts: 9
    I’m new to this forum, could you advise how to get notifications on posts you’re involved in, atm I’m just having to check emails when I get a chance, thanks
  • DovefromaboveDovefromabove Posts: 86,168
    Hi BigDog Al

    to set your notification preferences go to the Cog Wheel up in the top right of the page where your name is.  Click on that then Personal Profile ... you'll find Notification Preferences there.

    Hope that helps  :)

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

Sign In or Register to comment.