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Treasure flower and Pua kala: growing conditions and wildlife benefits.

COMMON CHOICE Treasure flower Gazania rigens	NATIVE ALTERNATIVE Pua kala Argemone glauca
	GO NATIVE
Native range
Coastal southern Africa	Hawaiian native range: Niʻihau, Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, Kahoʻolawe, Hawaiʻi.See state guides
Sunlight
Full sun	Full sun
Soil moisture
Dry to average moisture; well-drained soil	Dry soil
Mature height
6–12 in	1–3+ ft
Mature spread
6–12 in	2–4+ ft
USDA hardiness zones
9–11	Choose by island, elevation, and rainfall.
Season of interest
Spring–fall	Intermittent flowers
Garden & wildlife value
Used in pollinator gardens for its daisy-like flowers.	This Hawaiian poppy flowers in exposed, dry sites with little supplemental water.
Growing notes
Often grown as an annual. Flowers close at night and may stay partly closed on cloudy days.	Prickly foliage belongs away from paths; full sun and a dry interval between waterings help keep plants sturdy.
Growing information	Growing information

Sizes describe the species; individual cultivars can differ.