Agastache mexicana prefers well-drained soil and can tolerate some drought once established. Water deeply when the top few centimeters of soil feel dry. Avoid overwatering, as this can lead to root rot.

Reduce watering in winter when the plant is dormant or growing slowly.

Prune Agastache mexicana in early spring to remove any winter damage and shape the plant. Deadheading spent flower spikes throughout the blooming season encourages more flowers and maintains a tidy appearance.

Light trimming can also promote bushier growth.

Agastache mexicana is easily propagated from seed sown in early spring or late autumn. It can also be propagated from stem cuttings taken in late spring or early summer.

Cuttings should be treated with rooting hormone and planted in a well-draining medium.

Repot Agastache mexicana when it becomes root-bound, typically every 2-3 years. Choose a pot that is only slightly larger than the current one and ensure it has adequate drainage holes.

Use a well-draining potting mix, ideally one formulated for herbs or cacti.