@Jewitch I’m a baby green witch and found an app to identify plants (also one for rocks lol) and went out walking in my neighborhood hood and yard taking pictures of all the different plants (my neighbors probably thought I was nuts) and was AMAZED by how many herbs and plants that I had randomly growing around me that I could use for spell work. Last month I actually harvested 3 lbs of yellow dock seeds, stems/leaves and roots just out of my own yard. I also found stinging nettle, cinquefoil, nightshade, plantain, yarrow and discovered that my neighbor actually has belladonna growing in her flower bed 
of course I harvested some of everything after asking permission from nature and even got permission to cut a small amount of belladonna from my neighbor (though I’ve mostly just decided that it will just be a pretty item in a jar on my altar shelves because I’m so new to working with herbs and don’t wanna risk hurting anyone by attempting to actually use belladonna for any reason)
I found a neat herb hack. My mom has a small ghost plant growing in her kitchen window and I took a couple of the fallen leaves and placed them in a jar with a cork lid and put it in the Hinged lid box I keep all my herbs jars in on my altar. I never found anything I wanted to use it for and after a few months I noticed that the jar was full of liquid. But I left it be and about a month later noticed that it was all liquid and just had green gunk floating in it. Turns out that the liquid was chlorophyll. I had received some herb plants in the mail from across the country in a trade I made with another witch and they didn’t travel well by mail and so I researched trying to revive them by using the liquid chlorophyll I ended up with (you can even use the liquid chlorophyll you can buy in health food stores like GNC) and pouring it onto the soil when I watered my little plants. Sadly my plants were too far gone to save by the time I had this idea BUT it did make my aloe vera plant double in size and the arms on it doubled in thickness… If you don’t want to buy the liquid chlorophyll you just take some cuttings from a live plant and put them in a glass jar with a cork and store it in a dark place for a good while (like I said it took 2-3months for me to discover mine) and maybe shake it a little once a week or every other week and it should produce. I’m not sure but I think succulents may work best for this because the second batch I’m working on now is not producing nearly as much.