Lynda Thornton wrote in
:

Ha ha - I would gladly do so if it were possible! It's always the
way, one nice little tree on its own doing no harm gets devastated ...
anyway I will be removing the ladybirds by hand and then zapping the
aphids once the rain has stopped.

Sombody suggested planting some lavender near roses to help keep the
aphid/greenfly down...

Woudl this work here?