A self-described “witch” set fire to a stranger’s front porch in Iowa after they failed to answer her three knocks at the door.

The woman identified as Michelle Young, who sported a massive grin and wild hair in her mugshot, was arrested on Tuesday and allegedly told investigators she was under the impression her friend lived at the Iowa home when she ignited the blaze around 4:30 p.m.

The 46-year-old was still standing on the burning porch when firefighters arrived, fortunately in time to extinguish the flames with minimal damage to the property.

She readily admitted to setting the fire, telling cops she had scooped up “miscellaneous items” to ignite while on a two-hour walk around the neighborhood, cops said.

Young told officers she was a “witch” and had observed a sign that said, “Witches Welcome” on the porch.

She had knocked on the door three times before stopping to smoke a cigarette on the porch before knocking once more, Young allegedly told investigators.

That’s when she started burning clothing and other items and the entire act was caught on the homeowner’s security camera.

“The resident said she did not know the woman and had never seen her before.

She claimed she had no intention of hurting anyone or letting the fire grow out of control.

Michelle Young will soon appear in court to answer charges leveled against her.