If anyone is wondering where I got the idea to mix plants, there are a few examples in history that I am copying.
Eventually I will start getting some plants in the Oregano family, so that I can copy the ancient "Greeks" (Creteans) in their creation of "Dittany of Crete" which is a plant that you can't find seeds for, and you have to buy a cutting. It has been classified as an Oregano species, but I am personally pretty sure that it is an Intergenetic Hybrid, which left it sterile. But the people of Crete saw it had Psychoactive effects and preserved it by sharing.
You will find a similar story surrounding Salvia. Salvia is a plant that almost always gets reproduced via human intervention (just like Dittany). This means that like Dittany, you will usually find it in cutting form.
I am not sure if Salvia or Dittany are viable to reproduce within their Genera, I have never heard of anyone mixing Salvia with any other sage variety (someone should), but again, flowers of Salvia are rare and it usually reproduces through cuttings.
If you have heard of a mule, it is a cross between a horse and a donkey, and it is sterile. There is some fancy breeding pattern (like back breeding with the parent species) that works as long as you have a female mule I think, but it changed it's breeding ability.
There are also "Ligers" and "Tigons" (depends if the mom or dad is a lion or tiger) and other similar animals.
So either Salvia and Dittany are similar to the mule, and are hybrid species (Sage and Oregano) or they are Intergenetic Hybrids, meaning Sage species mixed with some kind of mint or something. And an Oregano species mixed with some kind of mint or similar species.
So basically, if/when this works (I will be trying to make both Hybrid species & Intergenetic Hybrids) I expect that these plants will not be easy to breed further, and will have to be spread by cuttings. And these examples are where I got this idea.