Alstroemeria aurea requires consistent moisture, especially during its active growing and flowering periods from spring through autumn. Ensure the soil remains evenly damp but never waterlogged, as this can lead to rot. Reduce watering significantly during winter dormancy, allowing the soil to dry out slightly between applications.

Regular deadheading is essential for Alstroemeria aurea to encourage continuous blooming and prevent seed formation. To deadhead effectively, pull the entire spent flower stem from the base of the plant, rather than just snipping the flower head. In late autumn or early winter, once the foliage begins to yellow and die back naturally, cut all stems down to about 10-15 cm above ground level to prepare the plant for dormancy and promote healthy spring growth.

Alstroemeria aurea is most effectively propagated by dividing its rhizomatous rootstock. This should be done in early spring before new growth emerges, or in autumn after flowering has ceased. Carefully lift the entire clump from the soil and gently separate the rhizomes, ensuring each new section has at least 3-5 'eyes' or growth points. Replant the divisions immediately at the same depth. Propagation from seed is also possible but typically results in a longer wait for flowering.

Container-grown Alstroemeria aurea benefits from repotting every 2-3 years to refresh the soil and provide more space. The best time for repotting is in early spring, just before the plant begins its active growth cycle. Choose a pot that is only slightly larger than the previous one, as Alstroemeria prefers to be somewhat root-bound. Ensure the new container has excellent drainage. Handle the brittle roots with care during the process to minimize damage.