Marjoram is cold sensitive. This herb has the potential to be perennial in warmer temperatures. This plant is a close relative to oregano and in some places they call it oregano all together.
Another member of the mint family, Marjoram is similar to oregano but a bit milder. This is another spice and tea; marjoram is also used as a garnish.

Marjoram has been used for common colds, runny noses, and digestive issues. Early research does indicate that is could be useful to assist with asthma as well- when paired with a medication.
There are a lot of health warnings for long term medicinal uses, but many are generic ones. The one that stands out to me is the one that talks about preventing clotting.
I like marjoram as a spice, I have never used it for medicinal purposes but I do enjoy it. Allegedly it smells really good, but I don’t have any that are big enough to put my face in. (Like my lemon balm. I love that stuff)

This is my first time, but I think from now on I will definitely go HERE so that I can see the side effects. It is good information. I put te link directly to marjoram as it is the relevant topic but please feel free to look into the warnings on your herbs.
Although it is nice to know all of the wonderful things that your herbs can do it is also good to know the negative effects as well. Turns out this plant could mess with some medications. Be careful when you are trying stuff out to look cool.
Mixing things unnecessarily could have side effects that you won’t notice until later. Always speak to a doctor if you are on medications. I do enjoy knowing what my plants do, but frankly- I am enjoying having them.