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Zion goldenbush

Isocoma humilis

Zion goldenbush is a rare, low, branching subshrub native only to southern Utah, with some populations inside Zion National Park. It is a wild species seldom grown in gardens, so care advice is largely general knowledge about desert members of its genus.

Family
Asteraceae (Daisy family)
Grows as
Shrub
Light
Full sun
Water
Water sparingly and let the soil dry fully between waterings.
Soil
Sandy or gravelly, very well-drained soil.
Temperature
Tolerant of hot summers and cold winters typical of the Utah desert; protect from prolonged frost in containers.
How easy
Moderate
Native range
Utah (Washington Co.)
Climate
temperate

About

Isocoma humilis, common names Zion goldenbush or Zion jimmyweed, is a rare North American plant species in the family Asteraceae. It has been found only in southern Utah in the United States. Some of the populations lie inside Zion National Park.

Isocoma humilis is a low, branching shrub rarely more than 8 cm (3 in) tall. Herbage is covered with copious hairs. Leaves are narrow, oblong to oblanceolate, up to 50 mm (2.0 in) long, deeply lobed. Each flower head is up to 7 mm (0.28 in) wide (fairly large for the genus) and has 19-28 disc flowers but no ray flowers.

Other Isocoma plants

Alkali goldenbush · Carquinez goldenbush · Aztec goldenbush · Common goldenbush · Drummond's goldenbush · Isocoma felgeri · Isocoma gypsophila · Isocoma hartwegii · Menzies' goldenbush · Southern goldenbush · Rusby's goldenbush · Isocoma tehuacana

Text excerpted from the Wikipedia article Isocoma humilis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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