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Description

A small to medium size evergreen shrub with an upright mounding habit, 4-6 ft. tall and as wide. Foliage has an open and airy quality that is comprised of 6-8 in. long bipinnately divided bright green leaves. Large red and pink flowers grow in 4-5 in. long terminal racemes and hang gracefully from stems. Flowering is most intense from late spring through summer, but can occur intermittently all year.

The Robyn Gordon grevillea cultivar is a graceful mounding shrub. It prefers well-drained soils, sun to partial shade and regular supplemental water during winter and spring. Established plants do well with reduced summer moisture. It is commonly selected as an accent color plant in small gardens and background spaces.

Water Needs

Robyn Gordon grevillea grows best in sunny garden locations on well drained soils and with low amounts of supplemental water during summer. The chart shown below provides a recommended baseline guide to the monthly irrigation schedule and volume of supplemental water needed to maintain healthy growth throughout the average year. It should be noted there are several months indicated by an asterisk (*) when winter rains can provide sufficient moisture and irrigation is not needed. The high and low range of moisture indicates it can grow with varying amounts of water; more moisture during spring helps achieve a more robust and longer flowering cycle.

Irrigation Schedule and Graph

Low Water Use Plants

Irrigation Schedule 2

  Jan* Feb* Mar* Apr May Jun Jul Aug Sep Oct Nov* Dec*
Runs per Month 0x to 2x 0x to 2x 0x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 0x to 2x 0x to 2x
Inches per Run 1" 1" 1" 1" 1" 1" 1" 1" 1" 1" 1" 1"
 
Inches per Month 0" to 2" 0" to 2" 0" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 0" to 2" 0" to 2"

Range of supplemental summer water: 7"-14"
Range of supplemental winter water: 0"-10"

 
0"-2"
0"-2"
0"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
0"-2"
0"-2"
  Jan* Feb* Mar* Apr May Jun Jul Aug Sep Oct Nov* Dec*
For more information on how to use this Irrigation Schedule and Graph, follow this link.

For information how to calculate your irrigation system’s schedule and precipitation rate, please follow this link.

Plant Properties

Plant Type: Shrub
Foliage Character: Evergreen
Habit: Upright, Open, Mounding, Graceful
Growth Rate: Fast
Height: 4 ft. - 6 ft.
Width: 4 ft. - 6 ft.
Water Needs: Low 2
Foliage Color: Medium green
Flower Color: Red, Pink
Flower Season: Summer, Spring
Soil Adaptations: Well-draining soil
Exposure Adaptations: Morning sun, Heat, All day sun
Function: Wildlife value, Residential spaces, Raised planters, Hummingbird plant, Grouped, Flowering accent plant, Commercial spaces, Banks, Background plant

Maintenance

Dead head spent flowers, if desired, at any time of the year (D).

References

Associations

Plant Lists