The right of use/access is implied in the right of ownership. If you own it you can use it. Access/use can also be granted explicitly without conferring ownership. An example might be allowing a guest to use your cottage for the weekend. I believe the latter is in view here.
God never confers his ownership on anyone else. He is the almighty.
The text does say "every green herb bearing seed". Like Mark 7:18-19 it seems to not be aware that some herbs bearing seed are toxic to humans:
However I believe what that the best way to view these passages is in relation to religious cleaning rather than to safety. That is, God was saying that he would punish someone for hunting and killing animals but not for eating plants at that time:
Gen 10:8 And Cush begat Nimrod: he began to be a mighty one in the
earth. Gen 10:9 He was a mighty hunter [a predator] before the LORD:
wherefore it is said, Even as Nimrod the mighty hunter [predator]
before [defying] the LORD.
In fact, Torah doesn't seem to have the concept of clean/unclean plants at all. The marijuana and coca plants are just as ceremonially clean as are tomatoes and pumpkins. God made all the plants and all the plants are "very good". Some are not food.
To to get back to the question: God owns everything because he made it and he didn't sell anything:
Psa 24:1 A Psalm of David. The earth is the LORD'S, and the fulness
thereof; the world, and they that dwell therein. Psa 24:2 For he
hath founded it upon the seas, and established it upon the floods.
We know because of the kosher laws that God retained the right to dictate what people can and can't eat:
Act 11:7 And I heard a voice saying unto me, Arise, Peter; slay and
eat. Act 11:8 But I said, Not so, Lord: for nothing common or
unclean hath at any time entered into my mouth. Act 11:9 But the
voice answered me again from heaven, What God hath cleansed, that call
not thou common.
But what about other kinds of consumption, such as curing diseases with herbal extracts and such? The passage in question does not seem to aspire to be the passage of scripture that lists poisonous plant. So it appears that if you want to eat Rhododendron, have at it. Someone asked, "Can I get to heaven if I eat pork?" To which the preacher replied, "Yep, you might even get there quicker!"
One passage we can look to for some more data is this:
Psa 104:13 He watereth the hills from his chambers: the earth is
satisfied with the fruit of thy works. Psa 104:14 He causeth the
grass to grow for the cattle, and herb for the service of man: that he
may bring forth food out of the earth; Psa 104:15 And wine that
maketh glad the heart of man, and oil to make his face to shine, and
bread which strengtheneth man's heart.
It certainly appears that the Psalm sees the making of wine to be a God-given process. The alcohol in wine then does double duty as an antiseptic:
1Ti_5:23 Drink no longer water, but use a little wine for thy
stomach's sake and thine often infirmities.
The adding of wine for its alcohol to water is, I think, the kind of extract the question has in mind. So I'm going to say that this speaks to the point.
I notice it also says that the wine itself is intoxicating and that too is God's intention for the stuff.
Also I notice that the Psalmist definitely has a fondness for the drink he seems to also have a fondness for marijuana:
Psa 104:14 He causeth the grass to grow for the cattle, and herb
for the service of man: that he may bring forth food out of the
earth; Psa 104:15 And wine that maketh glad the heart of man, and
oil to make his face to shine, and bread which strengtheneth man's
To my mind that is celebrating the bounty of the land:
- plants for the cattle
- plants for man: food, wine AND olive oil to rub on his face to feel like a young man again
- plants to smoke?
If God gave man wine to bring a bit of pleasure, the abuse of which brings endless grief I find it unthinkable that he did not also give to man and for man's service, pleasure AND health the one plant that seemed to escape Eden. Perhaps it is the sweet, benign and pleasurable nature of marijuana that draws down so much hatred and persecution.
However, like today formulations for curing and such in the ANE were often the wares of charlatans and so the whole of medicine, I think, was largely considered as the realm of the world, not of the assembly.