Plants in the quintinia genus thrive in well-drained, humus-rich soil with consistent moisture. They prefer partial shade but can tolerate dappled sunlight. To plant, prepare the area by enriching the soil with organic matter. Dig a hole twice as wide as the root ball, set the plant ensuring the top of the root ball is level with the soil surface, then backfill and water thoroughly. Mulching helps retain moisture. Avoid overwatering, as quintinia species are sensitive to waterlogged conditions. Individual species may have specific requirements, so it's advisable to research the particular needs of the species you intend to plant.