"Native to this new world, the waspwort is a feared denizen of nature because it has no sense of morality, only an instinct to survive and consume."Summon Waspwort is a fourth-level Nature Magic spell in Heroes of Might and Magic IV that costs eight spell points and summons a number of Waspworts based on the level of the caster.
Not much to this spell, if you want a decent number of good ranged creatures (particularly in siege combat) then go for it. There is no better ranged attacker to summon.
The Waspwort's special ability to cast Weakness with every shot is best if shared with different enemy stacks. Buffing your existing stacks is probably a better idea early on in the combat though.