Posted: 21/04/2014 at 15:28
Thanks for your advise Frank.
Yes I have certainly done that with planting large pots previously - my own compost for the bottom half and bought compost in the top.
I also in Spring replace 2" of the top of containers with my own compost and some fertilizer. You are right, some tiny grass seeds do grow but if you are vigilant you can easily pick them out. The thing with baskets is that they are so crowded once they are growing, that any weeds go unnoticed or are crowded out anyway.
I grow my Charlotte spuds in bags with just my own compost and they are fine, hardly needing watering (other than the rain that they get).
It will be interesting to see what happens with the basket of fuchsias. Perhaps I should do an experiment, playing about with different mixtures!