Hi there i have some vinca minor flats that have been growing in my greenhouse for the past few months they dont look to healthy i was going to try and perk them up before spring. I found today that there is some mold growing on the pots and i know thats not good so im assuming i need a fungicide, i would also like to fertilize them im not sure what to use any clues i was using 20 20 20 granular tracite but i think that might be a bit much.