Do grenadillas ripen after falling off the vine?

Yes, grenadillas can continue to ripen after they have fallen off the vine. However, the ripening process will be slower than if they were still attached to the vine. Grenadillas that are picked prematurely may not ripen fully and will have a tart flavor. It is best to wait until the grenadillas are fully ripe before picking them. Ripe grenadillas will be deep purple in color and will have a slightly soft texture.