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Sphaeralcea ambigua Observations
(desert globemallow)
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Introduction to the NPN Native Species Observation Program
Shrubby and woolly, this perennial grows 1-3 ft., with numerous large, apricot-orange flowers in wand-like clusters near the tips of weak, wide-ranging, sometimes sprawling stems. The broad leaves have three lobes and rounded scalloped edges. Desert globemallow is a grayish plant often with many stems, and bright orange-red flowers in clusters with erect branches. It is one of the largest-flowered, most drought-tolerant species of Globe-mallow. In wet years it forms spectacular displays in the low, hot southwestern deserts. In some forms petals are pale purplish-pink.
Source: Lady Bird Johnson Wildflower Center, Native Plant Information Network
You should record when two well-defined phenological events occur for desert globemallow:
- First bloom (FB) First select an approximately 1 by 1 meter plot for observation, and then record the date when first flowers are open in at least three places on the observed plants.
- Mid bloom (MB) Within the same 1 by 1 meter plot used for first bloom, this is the date when 50% of the flowers are open on the observed plants.
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Report by email if any plant appears in poor health.
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