### The Lake Naivasha Basin in Kenya  
Lake Naivasha, the second-largest freshwater lake in Kenya, plays a very important role in the country's economy due to the floriculture and horticulture production in the riparian area. Lake Naivasha is also a major tourist attraction. The area surrounding the lake has high biodiversity, and in 1995, it was named a Ramsar site, a wetland site of international importance. The Lake Naivasha Basin (LNB) contributes almost 1.3% of Kenya's gross domestic product (GDP) and is the origin of 70% of Kenya's cut-flower exports, generating an estimated 9% of the total foreign exchange revenue [11; 12]. LNB contributes significantly to food security in Kenya--20% of Kenya's vegetable exports and 37% of the vegetable consumed locally are from the basin [13; 14].  
Due to various anthropogenic activities, the lake faces huge challenges. Populations in the urban, peri-urban, and rural areas have placed immense pressure on the lake's ecosystem and resources, i.e., water, fish, wildlife, and forest, due to agricultural and consumption patterns [9; 10; 11; 12; 13]. Various farming activities at the basin resulted in pollution from agrochemicals, poor soil management, and conservation, and decreased water quality and quantity [15; 16; 17; 18; 19], undermining the resilience of the basin [20]. Previous studies estimate that about 80% of the reduction in the lake levels is largely due to horticultural activities by large commercial farms and partly by MSMEs [21; 22; 23; 24; 25]. Furthermore, the basin was also affected by the COVID-19 pandemic, which disrupted agricultural value chains as a result of restrictions on movement and the resultant loss in incomes.  
Horticultural MSMEs play a pivotal role in horticulture at the LNB. They grow and rely on different types of vegetables, including tomatoes, Irish potatoes, cabbage, kale (_sukuma wiki_), spring onions, capsicum, snow peas, and garden peas [26]. Fruits grown in the basin, albeit in small quantities, include tree tomatoes, plums, and watermelon [26]. Some existing markets for fresh fruit and vegetables (FFV) within the LNB include hotels, restaurants, supermarkets, high-end green grocers, open-air markets, brokers, and roadside kiosks. LNB also serves regional and international markets [26; 27]. The various actors in the horticulture value chain in LNB include input suppliers, local traders, processorsand assemblers, wholesalers, retailers, exporters, supermarkets, individual buyers, hotels, and public institutions, as well as horticultural companies, county governments, local NGOs, and, in general, all actors relying on the basin and its products in the wider national economy. The unique blend of biodiversity and anthropogenic activities in LNB requires sound ecological approaches. Particularly for the horticultural MSMEs in the basin, this calls for efforts to promote their uptake of SCP practices to enhance their resilience and contribution towards the achievement of higher incomes in agriculture, increased employment opportunities, sustainable management of natural resources, environmental conservation, green economy, and poverty alleviation in the basin.  
The interactions among the different actors in LNB directly affect the uptake of SCP practices, the market dynamic, and value-adding activities. Given the significance of the LNB, lessons learnt from the basin on the promotion and uptake of SCP practices among MSMEs will also be useful for other regions beyond the basin, in Kenya and beyond.