The nettle macerate.
A preparation based on propolis: 15 ml of water-alcohol solution of propolis on 5 liter of water.
marseille liquid soap: 20 cc over each liter of water (and mix well).
Strong bitter tea: boil for several minutes, a spoonful of tea in 1 liter of water. Then strain, let cool and use undiluted on the plant and also on the paths of the ants.
Water under pressure over the plant.
Generally is a system used over tree but with caution i think could be used even for small plant.
Good entomophagous insects:
Hoverflies the Diptera
Different Rincoti Heteroptera
About chrysoperla carnea
they are active against differents things but i don't known if the adult are sufficient good or not, given that they like feed on pollen, nectar and other sugary substances.
In summary i don't known if they can ruin the flowers.
Probably no, but i don't known.
Lotta biologica agli afidi con l'ausilio degli insetti utili
Should always be taken into account the peculiar biological characteristics of util insects.
For example the larvae of Chrysoperla carnea attack aphids immediately once entered in the field and can feed in scarcity of aphids, other prey such as mites and other insects, and respond well to environmental stresses and temperature.
While other type of insects require a lot of prey for work good.
As usual when are used good insects and larvae is better don't use other system because even biological system could be dangerous even for good insects.
Later i think i add others solutions.
If someone known other system, suggest it.