Does the Bestow Curse spell add 1d8 necrotic damage to spells that normally do not deal damage?

The fourth option for the spell bestow curse (PHB, pg. 218) reads:

  • While the target is cursed, your attacks and spells deal an extra 1d8 necrotic damage to the target.

Does this extra 1d8 damage occur when one of my non-damaging spells affects the cursed creature?