Erinus plants prefer well-drained soil, partial shade to full sun, and moderate watering. For planting erinus, prepare by loosening the soil and enriching it with organic matter. Space the plants adequately, cover the roots without burying the stem, and water gently. Early spring or fall is ideal for planting. Mulching helps retain moisture. Adapt care for specific erinus species, as needs may vary; always inspect the particular species' requirements for optimal growth.