Hi, I spent a lot of time and effort planting huge pots around our home but there is nothing I can do to stop the dreadful mess. These large pots have bougainvillea planted in pots inside these larger decorative ones and saucers in side to bloc the mess running out but obviously I have just caused trapped water. Hence the very moldy pots. The 2 that are not in the direct weather are fine but the other 2 are destroying our outside marble tiles and help would be appreciated. Please know I have tried exterior saucers but these just overflow and go moldy as well.