Posted: 15/06/2013 at 10:51
This is my first year with a greenhouse and I thought it better to use bought compost rather than my own to avoid unnecessary weed seeds etc. Used B&Q Verve and it was absolute rubbish. I watered my tomato plants in and the water just poured straight through and was immediately a dark brown colour - leached nutrients? I waited to see if it would soak back into the pots but no - it just sat there, the plants wilted and within 12 hours the water in the plant trays started to smell. I chucked it all out and replanted into Monty's recipe - I already had all of the ingredients! Result - beautiful healthy plants growing away ... Ta-daa.
B&Q Verve is not multi purpose at all - in fact it's only any use as an outside mulch, or as 20% of an outside soil improvement recipe. I have to confess to lurking near the stacks of it at my last visit to B&Q to mention this to potential buyers - but I didn't see any!
I am not sure that this compost is entirely at fault here Sue
You say it changed colour to dark brown when watered -well it does -that shows it has taken up water-you then say it ran straight through-so draining well- and stayed in trays-you are leaving plants standing in water?
That would account for wilting
You then assume that the colour change is nutrient leeching out -that is a big assumption
I am using verve it seems ok -others have have good experiences others not so.
Sometimes it is easy to say -oh it must be the compost -but are you perhaps not doing the right thing?
It could be a cultivation issue-not saying it is or isnt-but my experience is good