True wormwood is the plant you need for treating aphids and moths and for deterring slugs and fleas.
It is an evergreen shrub that will grow around 1m high with aromatic, shiny grey / green leaves. It will grow happily in a full sun location in well draining soil.
Wormwood has traditionally been used to assist with digestive disorders, increase sexual desire and stimulate imagination. It’s also used externally for assisting in healing and possibly reducing pain.