Okay no I do not sell any medicines ....I could lose my house, and land. I will preface all the medical information with the statement according to the people of the Taiga this is what these plants do. I hope that is enough to satisfy all those in the background. As for the value of poplar bud, it would depend upon whether or not you could find some one to buy them from you. Organic dandelion root is worth 35.00 per pound if you can find some one to sell it to. If your poplars are close to a road or drive way remember they would not be organic.
So to answer what to do with the plant materials that I spoke about.
spruce is an analgesic, anti fungal, antimicrobial antiseptic and disinfectant. It can be prepared as a cream essential oil foot soak, hydrosol, infusion liniment oil poultice, salve, steam syrup tea wash, the pitch can be used in any of these but needles and tips will work better at some things than others. According to the council of the Yukon First Nations "the sap of the spruce is a tonic and is used each spring to clean the blood. The inner bark of a spruce was made into a tea and strained and was used for stomach upsets, ulcers, weak blood mouth sores and sore throats. Spruce cambian was an emergency trail food, needle tea a source of vitamin C. First nations people use the gum or pitch as a lozenge for coughs and sore throats. They mix the pitch with grease (I use oils and beeswax) to treat cuts and topical infusions. It cleanses the wound and protects it from germs, makes great stitches in a pinch and can be packed into the cavity of a tooth until you can get to treatment.
There is also spruce tip jelly, spruce beer, soaked in oil they make a great salad dressings and in the boreal gourmet you will find a recipe for spruce tip salt.
I have also have a Sami recipe for pine bark crackers which are really quite good, pine and spruce ache and pain liniment pine household cleaner. There is research being done into the primary active compound in the wood of the larch species an arabiogalactans that belong to a group of carbohydrates called polysaccharides. Studies have shown that the larch arabinogalactans help to stimulate the immune system to fight cancer and act as a prebiotic to help stimulate and promote good bacteria in the digestive tract and help to produce digestive enzymes. There are companies that are producing this in powder form generally from the western larch. The larch was and remains a major food source among northerners.
Poplar in the winter gather buds. Bark in the spring, gather that from pruned or downed branches. The medicinal properties of poplar: alterative, analgesic, anticoagulant, anti-inflammatory, anti-rheumatic, antiseptic, astringent, bitter, cholagogue, diuretic, expectorant, febrifuge, pectoral, mild sedative and tonic. Preparation methods include bah, cream, infusion, oil, linement poultice, salve, steam tea and tincture. The buds are emollient and help soften, soothe, and protect the skin. They are also effective at helping heal wounds and cuts, and demucent, helping soothe and protect irritated or inflamed tissue. The inner bark contains salicin and is a natural remedy for feverrs, rheumatism, arthritis, and diarrhea. This is a stronger medicine and can be very stimulating in high dosages.
A salve made with the winter buds is traditionally called balm of Gilead. There is something in poplar bud that acts as a preservative so mixing some in with some of your own blends will preserve them for years longer than normal.
I hope all that answers all the questions and helps get anyone started who wants to.