What's your question? Ask

Blossoms are a good sign that the plant is generally healthy. When it comes to berry production, the main factors are usually pollination and plant variety. Many cotoneaster types are self-fertile, but some do rely on cross-pollination from another cotoneaster nearby. If you didn’t see any berries last year, it's possible that pollinators—like bees—were scarce during bloom time. To encourage berries this year, I’d focus on attracting pollinators by planting pollinator-friendly flowers nearby or even hand-pollinating if you’re up for it. Avoid spraying any insecticides while the plant is in bloom, as this can deter or harm bees. Also, be sure not to prune off new growth too early, as flowers—and later berries—develop on that newer wood. One other thing to consider is your soil—if it’s high in nitrogen, that can push the plant to focus on leaf growth instead of fruiting. A simple soil test can help you check your nutrient balance, and if needed, you could adjust with a more balanced or phosphorus-forward fertilizer. With good blooms already showing, your chances are promising if pollination and nutrients align.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm

https://www.gardeningknowhow.com/ornamental/shrubs/cotoneaster/growing-spreading-cotoneaster.htm