Imperial Blue Plumbago is a stunning cultivar of Plumbago auriculata that rewards gardeners in zones 9 and warmer with masses of vibrant blue flowers from early summer through late fall. This heirloom variety grows as a substantial shrub, reaching 3 to 20 feet tall depending on how you train it, and attracts pollinators throughout the long bloom season. It thrives in full sun with moderate water, making it a low-maintenance addition to warm-climate gardens that want reliable, cheerful color for months on end.
3
Full Sun
Moderate
9-9
240in H x 36in W
—
High
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The deep imperial blue flowers arrive reliably from June through November, creating a continuous backdrop of color that deer leave untouched. Plant it in full sun and water moderately, and this heirloom performs without fussing. Its flexible size means you can grow it as a compact shrub or let it climb and sprawl into a dramatic focal point, adapting to whatever space calls for blue.
Imperial Blue Plumbago is primarily grown as an ornamental flowering shrub for garden beds, borders, and containers. Its long bloom season and vibrant blue flowers make it valuable for adding sustained color to landscapes, particularly in warm climates where it can flower nearly year-round. The flowers attract butterflies and other pollinators, so gardeners often use it to support pollinator populations.
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Prune Imperial Blue Plumbago to shape and maintain the desired size. The plant's flexible growth habit allows you to prune it as a compact shrub or train it to climb and sprawl. Deadheading spent flowers throughout the bloom season encourages continued flowering.
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