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About Us

The Creator:

The creator of Petal & Stem, Katrin Birkholz has worked in import-export in Luxemburg, worked as a professional photographer, set up an art gallery, had a successful line of digital print skirts and laptop bags, set up a cozy little coffee shop called "Kafe 99 Square Feet" whose new owners still serve coffee and tasty things in San Francisco, managed projects and client services.

Managing the evolution of Petal & Stem's products (online and offline) is her latest love and has been for years. Nothing can stop her anymore. She is impossibly fascinated with the adventures one can take on. She shifts them from scary and overwhelming to absolutely possible.

After years of experimenting with Essential Oils, going through numerous Essential Oil companies, she finally decided to stop the confusion. She was at the doorway to either believe what others tell her or study it in depth. Over one year later she graduated from the Aromahead Institute and opened up her Aromatherapy Store in Lisbon, Portugal in July 2018.

"Staying ONLY local is not an option", she says. She receives daily so many questions and she noticed, that she spent more time answering valid and really good Essential Oil questions than actually spending time in her store or with her family.

With the knowledge she has gained over the years, she decided to create online classes where everyone can have access to. No matter where you are in the world!


As a side note, she loves ecstatic dance, her family, animals, and her camera, which she uses as an escape from the busy world she lives in.

The Brain behind the web:

Seth Birkholz is a serial developer, developing software by day for others (Django, Python, Ajax, Java, et cetera, et cetera, et cetera) and business possibilities by night, of which Petal & Stem is only one (renewable alternative energy, anyone?)!  His interest and curiosity about life in general and human beings, in particular, amazes lesser folk, inspiring others to leap forward with him to answer the question "What if...?"

Jello makes him happy, and he plays a mean recorder.  

The Best son ever:

Max Frisbee is one amazing boy. A black belt in Karate, mastering Piano (Fuer Elise), chasing horses, dogs, cats and chickens and mastering 4 languages at the same time. He earns a Gold Medal for being the most patient brother to his sister! Max creates all videos you see throughout the courses, recipes and announcements and he clearly tells us if something looks really bad. Well, he is a half-blooded german. True, honest, charming and sweet! Beat that! Oh and did you say Ice Cream, Popcorn and movies? He will be there :-)


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