Pennyroyal

Perennial. Mentha pulegium

150 seeds per packet. 

Low growing and minty smelling groundcover-ish plant that flowers to 1.5ft tall. Spreads easily and always smells delicious when you step on it. Toxic! Don't be fooled by the minty scent, this is not a plant you want to eat. Has a history of medical use that is quite interesting if you want to go down a rabbit hole. 

Photo credit:

Neckbone at Italian Wikipedia, Public domain, via Wikimedia Commons

Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons