Ants' nest in the base of a rosebush
I have planted a new rose in a small bed this year and ants have made their nest and are raising aphid farms there. I have been pouring buckets of water on it all summer, to water it. I am not convinced that water disuades ants anyway as they live quite happily in my soggy compost bins and are content to make honeycombs of chambers to ventilate it as they wish. They the world's expert engineers.
I don't want have the new roots of the rose hanging in fresh air. I don't want to use insectide. Any other ideas?