As you may have already found out yourself from the research you have done, it is very difficult to find Mexican oregano plants and even harder to find the seeds.
Your best bet is to head down to your local garden center, preferably the largest one in your area. If they do not have the Mexican oregano plant or seeds in stock, ask an assistant if they are able to order them in especially for you. They may say they are too difficult to get, but it is certainly worth the try.
Even if they don't want to order them in, then they could well be able to give you information on where they can be bought from. It may be direct from a supplier and there may be a minimum order, but again it is worth checking out.
It may also be worthwhile heading to some gardening forums to ask where other gardeners have managed to acquire their Mexican oregano seeds and plants.
Some useful gardening forums can be found at the following addresses:
You may need to sign up to the forum in order to post a question but this is fairly easy to do.
Your best bet is to head down to your local garden center, preferably the largest one in your area. If they do not have the Mexican oregano plant or seeds in stock, ask an assistant if they are able to order them in especially for you. They may say they are too difficult to get, but it is certainly worth the try.
Even if they don't want to order them in, then they could well be able to give you information on where they can be bought from. It may be direct from a supplier and there may be a minimum order, but again it is worth checking out.
It may also be worthwhile heading to some gardening forums to ask where other gardeners have managed to acquire their Mexican oregano seeds and plants.
Some useful gardening forums can be found at the following addresses:
You may need to sign up to the forum in order to post a question but this is fairly easy to do.