There are always 4 salads in the area - once they scent you, they will follow you until you kill them. If I understand well, you were "lucky" and get another two "random encounter" salads as well. If you run away then you lose the two but not the four not-so-random ones. The salads will follow you and they can even reach the town gates and wait there until you leave the town ...
What to do with the salads? As Bungleau has said, cast Firestorm (level 7 Fire spell) on them. If you are enough good in Sorcery, you can get them down with a single blast or, at least, greatly simplify your melee combat. Other "storm" spells are also usable but they are worse (against salads) than Firestorm. Note that the "storm" spells are "area at range" spells so that you cannot (should not) cast them if the target is too close to you. Note also that each level 7 spell is 100 spell points.
If you won't get disappointed by the game
then note that
the game allows you to "inherit" your property from one game to another. You start a new game (Reset Adventures) - and you find your old party sitting in the Valeia inn, along with its inventories. The old party lose certain quest items (if you had them in the moment when you started the new game) but not all of them. Therefore, you can create a new party and equip it immediately by some good equipment (owned by your old party). For example, mighty protection amulets, (level 7 spell) scrolls, well enchanted and effective weapons and so on. This will make you a batman in the beginning of the game but it will fix later
Because you will be well equipped, the salads stop being a big problem. They will be dangerous but not fatal.