Horsetail and ginko, are two very interesting plants indeed. Most people don't know about the horse tail plant, we always used to call it snake grass when kids, we would pop the stems apart, but only a few years ago learned about the benefits of the minerals in it. It also goes back to the age of the dinosaurs. I've only seen a couple times, the bottle brush looking plant, 99.9 percent of the time, it's the tall skinny plant. I do like to move a few, quite a ways away to start a new patch sometimes near wet areas where they grow. Also, I'm moving some grasses around to spots where there are no grasses, for new spots for me to eat after a few years, to grow big patches of it. I do eat horse tail raw or take pills for the minerals. I've heard between ten milligrams up to forty milligrams per day for silica or silicon, I've got one herbal pill that has ten milligrams of bamboo for one pill. There's a different pill that I take with 37 milligrams of silica from horse tail. Plus, a different pill that has an aqueous horse tail extract from a French doctor that figured out years ago, it has a ten milligram per pill dose. He said they body can transmute silica into calcium, originally studying chickens that were not eating calcium, but had no problem with hard egg shells, biophysicists Louis Kervran (Paris, France) and by Dr. Richard Barmakian (United States). Although now that it's nicer weather out, I just eat fresh nettle leaves and grass leaves, as I learned years ago, that both grasses, especially oat staw leaves and stems, and nettles have a high amount of silica, and grass leaves always have a lot of sugar in them, especially when just a few inches tall in the spring. I tell people that buy the expensive shampoos, that sometimes they put horse tail, nettle, or bamboo in expensive shampoo for hair strength, or to take them internally, sometimes in multivitamins for tendon, ligament, bone strength, and for hair, skin, and fingernails, and suggest these plants along with celery and watermelon rind, when people have casts on after breaking a bone. Silica is supposed to remove aluminum in the body as well, and it's also supposed to remove nicotine, which we all have way too much, being around other unhealthy people.

https://www.meandqi.com/herb-database/ginkgo-nuts

I know that I read somewhere that you can't eat more than three raw ginko seeds in one sitting, there is something that is toxic if eaten raw. The fruit inside the hard seeds are a delacity overseas, I've had three raw before, once a year, they taste really good, like a sweet garden pea, but much better. But you can buy the roasted seeds in Asian/ Oriental grocery stores in my town. There are a few trees around town, they look nice, and it's free medicine. They are also very popular Bonsai trees, the leaves around here turn a beautiful yellow color, and all drop off of the tree within 24 hours. There's a couple utube videos on the tree on the process of growing it for Bonsai, apparently is a favorite tree of at least a couple popular people, going back all the way to the dinosaurs as well. It's on my list of things to try this year to grow a Bonsai ginko. I actually was thinking of gathering seeds a few days ago, before I read your post. I like to gather branches off the ground after big storms and try to root them in a glass of willow hormone water, but I haven't got it to work yet.

https://oureverydaylife.com/555718-horsetail-vs-biosil.html

https://www.homeremediesweb.com/horsetail-health-benefits.php

https://www.drugs.com/npp/horsetail.html#Tyler.1987 -- it says horse tail has one part per million of nicotine, and crude (raw) horse tail depletes thamine, vitamin b1, that you shouldn't take it for long periods of time, to avoid vitamin b1 deficinecy.

https://www.organicfacts.net/ginkgo.html

https://www.livestrong.com/article/1012016-never-eat-3-things-youve-ever-poison-oak-poison-ivy/ --- if you have a problem with poison ivy, poison oak, cahews, mangoes, pistachois, or sumac -- the ginko tree nuts harvested from the female tree contain urushiol.

I'm not endorsing this product, I've never taken anything but regular herb pills, but thought this was very interesting --- https://thesupermandiet.com/silica/

https://www.naturalnews.com/034756_silica_anti-aging_heavy_metals.html