Alphabetical Plant Listing

Sphaeralcea munroana (Munro's Globemallow)

Munro's Globemallow, White-stem Globe-mallow, Orange Globemallow, Desert Mallow, Whitestem Globemallow, Malva munroana, Nuttallia munroana, Malvastrum munroana, Malveopsis munroana


One of the gems of the arid western United States, Sphaeralcea munroana (Munro's Globemallow) is an attractive multi-branched perennial sub-shrub boasting a profusion of brilliant pale orange to brick-red, cup-shaped flowers, 0.75 in. across (2 cm), in late spring to mid summer. Borne in showy clusters along the upright stems, the flowers provide a rich source of pollen and nectar to butterflies and many species of bees. The stems and small, silvery green, 3-5 lobed leaves, 2.5 in. long (6 cm), are covered with fine white hairs, given them a slightly rough texture. An effortless plant in the garden, Munro's Globemallow is adapted to dry areas with open exposure. Drought tolerant, it is often found growing in rocky, sandy soil. It is perfect for water-wise borders, rock gardens, banks, desert shrub areas, along driveways and walkways and is also suitable for container planting. 

  • Grows up to 24-36 in. tall (60-90 cm) and 18-24 in. wide (45-60 cm).
  • Thrives in full sun in sandy or loamy, well-drained soils. Does not grow well in clay soils. Drought tolerant once established.
  • It is a great candidate for beds and borders, rock gardens or Mediterranean gardens.
  • No serious pest or disease issues. Keep an eye out for a fungal rust pathogen (Puccinia sherardiana).
  • Sphaeralcea plants are important forage sources for a number of rodents, rabbits, deer and antelope. Browsing deer will often consume all of the foliage and leave only the woody base
  • Cut back after flowering to rejuvenate the plant.
  • Propagate by seed. The seed has an impermeable seed coat and should be scarified using boiling water or other treatment prior to planting if a high initial germination rate is desired.
  • Native to western North America. It is found throughout British Columbia and the western states of Washington, Idaho, Montana, Wyoming, Colorado, Utah, Nevada, Oregon and California.

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Requirements

Hardiness 4 – 10
Heat Zones 8 – 12
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials, Shrubs
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early,Mid)
Height 2' – 3' (60cm – 90cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" – 24" (45cm – 60cm)
Water Needs Low
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Semi-Evergreen
Native Plants United States, California, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Montana, Utah, Wyoming, Southwest, Nevada
Tolerance Drought, Dry Soil, Rocky Soil
Attracts Butterflies
Garden Uses Banks and Slopes, Beds and Borders, Patio and Containers, Wall-Side Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Mediterranean Garden

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Matt Lavin (Flickr)

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 10
Heat Zones 8 – 12
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials, Shrubs
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early,Mid)
Height 2' – 3' (60cm – 90cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" – 24" (45cm – 60cm)
Water Needs Low
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Semi-Evergreen
Native Plants United States, California, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Montana, Utah, Wyoming, Southwest, Nevada
Tolerance Drought, Dry Soil, Rocky Soil
Attracts Butterflies
Garden Uses Banks and Slopes, Beds and Borders, Patio and Containers, Wall-Side Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Mediterranean Garden

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