Posted: 18/11/2015 at 20:09
Poly, two options.
drench with Provado now. Or, dig up your polyamthus....polyanthus .....and thiroughly wash the roots and pot into fresh compost.
I often dig mine up about now if the polys fail the "pull" test, viz., a sharp tug. i dig out the surrounding soil and spread the contents on a board or sheet of plastic for the birds to forage through