Goldenrod is in full bloom, but don’t confuse it with ragweed. They are totally different. Goldenrod has bright yellow flowers at the end of the plant. Often people run from this plant during allergy season because they think it is what makes them sneeze and causes a stuffy nose. It is not goldenrod that causes this. Ragweed usually is the culprit.
Each year, I infuse Goldenrod in olive oil for my apothecary. You can use the infused oil on about anything from muscle aches to using it in an all purpose healing salve for scraped knees, chapped lips, or minor scratches.
I fill a large jar with fresh goldenrod flowers. Using your preferable oil (I use olive or sweet almond) pour over the flowers until they are fully covered. Because the flowers are fresh, they have moisture in them. You will need to place a breathable cover on the jar, such as a cheese cloth or tea towel.
I then place my jar in a cool, dark place (such as a pantry) and leave it to infuse for about 6 weeks.
After that amount of time, you can pour off the oil and discard your flowers. You now have goldenrod-infused oil.
Store in a tin or glass jar with a sealed lid for long-term storage.