Along the Danish coastline, Fucus serratus is a key habitat-forming brown algae. Due to its commercial use (e.g., as food, in pharmaceuticals, and cosmetics), it is widely harvested, yet, unlike Laminariales, rarely cultivated. As a result, knowledge on reproductive phenology, seeding methods, optimal deployment timing, and yields is limited. This study addressed these gaps by evaluating the gamete production and in vitro fertilization success, followed by the monthly deployment of seeded and unseeded substrates (concrete H-blocks and ropes) in Begtrup Vig (Baltic Sea, Denmark) over 1.5 years within a natural Fucus spp. bed. Mature F. serratus receptacles were present year-round with a peak abundance per individual from August to February. Fertilization success was maximal from October to January with a male:female gamete ratio of >50:1. The seeding on ropes showed low success (maximum 54 individuals m-1 after one year). In comparison, concrete substrates had a density of up to 69,185 ±9,862 individuals m-2, particularly when deployed in April. Overall, a deployment in April and May resulted in three months earlier visibility in comparison to other deployments and higher growth rates (up to 9.9% d-1). While F. serratus was artificially seeded, Fucus vesiculosus relied on natural recruitment. However, F. vesiculosus clearly dominated, reaching a maximum yield of 54.26 kg m-2, outperforming F. serratus (maximum 16.19 kg m-2) despite not being actively seeded. The study indicates that year-round seeding is possible, but spring seeding is most favourable. Deploying unseeded stones to be seeded by natural recruitment, and following harvested, may be a promising approach to mitigate the impacts of wild harvesting, while rope-based cultivation requires further research.