Water deeply and regularly during establishment. Once established, allow soil to dry between deep waterings; occasional summer irrigation improves appearance in Phoenix.
Muhlenbergia rigens is deer grass, not pink muhly (Muhlenbergia capillaris). These details describe M. rigens, a Southwestern native bunchgrass with arching foliage and tall, slender flower spikes.
Light: Full sun to light shade; tolerates Phoenix heat with adequate establishment watering.
Water: Water deeply and regularly during establishment. Once established, allow soil to dry between deep waterings; occasional summer irrigation improves appearance in Phoenix.
Soil: Well-drained sandy, gravelly, or loamy soil; tolerates alkaline soil and clay where drainage is adequate.
Mature size: Foliage reaches 3–4 feet tall and 4–5 feet wide; flower stalks can reach 5–6 feet tall.
Bloom: Late spring through summer; flower stalks often persist into fall and winter.
Evergreen / deciduous: Generally evergreen in Phoenix; cold or drought may cause foliage to brown.
Growth rate: Moderate to fast with sufficient moisture.