Grey Horizon™ emu bush

Eremophila glabra 'EREM1'

Eremophila 'Grey Horizon' on Low water in Davis, July 2020. Photo: K Reid

Summary

Grey Horizon™ is a low-growing, prostrate groundcover from Australia with silver-grey leaves. Tubular orange flowers with prominent stamens are not very showy as they appear nestled in or below the foliage. Flowering started in late fall to late winter at both sites, mostly ending before measurements were collected in Irvine and by early May in Davis. In Irvine, several plants continued to flower regularly throughout the summer, while there were a few plants that occasionally flowered in Davis, but in neither site was flowering a significant feature in overall appearance.

Grey Horizon blooms in April 2020 in Davis. Photo: J Sisneroz

Although from a distance this plant appeared full, they quite consistently developed a bare spot in the middle at the crown due to the prostrate, horizontal growth of the stems. This impacted overall appearance scores at both sites, especially in Davis where it was more prominent. To overcome this in a landscape, pruning of central stems to encourage branching in the spring should be considered. If used to spill over a wall, it might not be an issue at all. Plants were not bothered by pests or disease in either location. No significant difference in growth between treatments was observed at either site, nor were there any differences in aesthetic quality between treatments. Based on our results we recommend irrigating Grey Horizon on low water in WUCOLS Regions 2 and 3.

Growth and Quality Data

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Eremophila 'Grey Horizon' from the top in July in Davis showing the center filling in but still somewhat bare. Photo: K Reid