Hello, Palmlin. The plant looks like a hydrangea paniculata but I am not sure about the specific cultivar as the blooms are still too small. To help identify paniculatas, it helps to post pictures as the bloom changes colors and see how tall the plant/blooms grows. For example, some paniculatas produce blooms that start lime green while the majority starts white. Until recently, paniculatas were large specimens (3 meters or more). They are the most sun tolerant of the hydrangeas and can be typically planted in full sun. However, here in Texas where I live, paniculatas will appreciate afternoon sun as the weather gets inhospitable during the summer. Paniculatas can attract pollinators with fragrance (not too potent compared to roses). But this scent works well so I see all kinds of insects sometimes flying around the blooms. As a result, I do not plant paniculatas near the front door so bees, etc will not bother visitors or build nests/hives. The blooms are panicle shaped. Some are lacy; others are not. Once the bloom is spent, it turns brown and stays attached to the plant until it falls down. Because some of the blooms can be large and heavy, the bloom's peduncle may last long and not decompose quickly so, blooms may stay attached to the plant for a whole year. Certain paniculatas have a tendency to flop but, as the plant gets older, the stems turn from green to more stronger/woodier colors like brown/gray/sandy. They like to have organic mulch year around and will feed off the decomposing mulch so I usually fertilize them for 1-3 years and then quit but maintain 5-10 cms of mulch year around. To fertilize, you can use organic compost, composted manure, cottonseed meal or a general purpose, slow release, chemical fertilizer with a NPK Ratio of around 10-10-10 or so. If your growing season is short, a single fertilizer application in Spring is enough as hydrangeas are not heavy feeders like roses.