For the genus 'retzia', plants typically thrive in well-draining soil, with a preference for loamy or sandy substrates. They require an area with adequate light, favoring full sun to partial shade conditions. Regular, moderate watering is essential, especially during the establishment phase. Begin by preparing the soil, amending with organic matter if necessary. Plant 'retzia' at the same depth they were in their containers, spacing them according to their expected size. Once planted, water thoroughly and maintain consistent moisture without over-saturating. Mulching can help to retain soil moisture and temperature, reducing weed competition. Different species within 'retzia' may have varying requirements; always check for species-specific needs.