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Summer Poppy, Orange Caltrop

Kallstroemia grandiflora

Details & Attributes

Plant Type(s) Annual
Native to Arizona Yes!
Water Needs Low
Sun Full sun, partial shade
Pollinators Bees, butterflies
Has Spines No
In relative feet, width by height
6" × 6"-1'
Freeze Tolerant Yes
Flowering Season February-September
Flower Color Orange/yellow
Minimum Temperature Range 15-20 °F
Leaf Description 5-9 hairy leaflets per leaf
Fruit A hairy, beaked pod
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Description As the common name would suggest this showy annual comes up after summer rains, forming carpets of yellow/orange blooms. Summer poppy occurs in central and southern Arizona, from the desert up into the grasslands. This species fills a niche occupied by gold poppy in the springtime. Though they bear little external resemblance to one another, summer poppy is one of the few native plants in the same family as creosote (Larrea tridentata).