Did you planted your wintergreen plant in a place with filtered sunlight?
Did you planted your wintergreen plant in well-drained, and acidic soil?
Do you live in a place with mild summer temperatures?
Do you water your plants regularly?
Did you fertilize your wintergreen plant?
Did you harvest your wintergreen plant for consuming?
Do you keep your wintergreen plant free of pests and diseases?
Wintergreen plants are shade-tolerant, and may even grow in dense shade, but will produce few or no flowers in shadier places. Bright filtered sunlight will keep plants from scorching, but give them enough energy to produce blossoms and fruit.
The wintergreen plant is a member of the heath (Ericaceae) family, and as such needs very acidic soils for plant health. You can perform a soil test to check the acidity of your soil, and if the pH is higher than 6.5 you must lower it with acid-rich amendments like peat moss, which also help with drainage issues.
Areas with mild summer temperatures and average to high humidity, as found in the Northeastern United States, are favorable to wintergreen plants. The plants fare poorly in the hot, dry sun of the Southwest. If you live in a warmer region, it is advisable to grow your wintergreen in a container indoors. A cool room will be less stressful for the plants than a hot window.
Regular moisture is important for the health of wintergreen plants, especially during berry production. The more sunlight your plants receive, the more moisture they will require. If rainfall is scarce, irrigate your wintergreen plants to the equivalent of an inch of rain per week.
No supplemental fertilizer is necessary for wintergreen plants. These native plants are adapted to grow in areas with poor soil lacking in nutrients. One way they compensate for low soil nutrition is by keeping their leaves from the previous season, conserving the energy it takes to grow new foliage.
The berries of wintergreen plants are edible for people and animals. You can take wintergreen leaves for tea anytime during the growing season. Harvest wintergreen berries as soon as they are fully red in the late fall. Wintergreen plant leaves are used in herbal tea. Wintergreen essential oil is much more concentrated and is not safe to ingest in any amount.
Good job! You are taking good care of your wintergreen plant.
The volatile oils of winterberry deter most insect pests. Poorly draining soils can lead to root rot or mildew. Aphids may present an occasional problem in the spring but are easy enough to blast away with a jet of water.
https://www.thespruce.com/grow-wintergreen-plants-for-a-splash-of-winter-color-4685614

Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/