Mexican Giant Hyssop is a vibrant herbaceous perennial native to the oak forests of central Mexico, where it thrives at elevations around 8,000 feet. This cultivar reaches 15-24 inches tall and wide (though some sources report it can stretch to 36-48 inches), producing bright pink flowers held in dense whorls from July through September that hummingbirds find irresistible. It grows in zones 7-10, handles drought and heat beautifully once established, and shrugs off deer browsing. The lance-shaped foliage and showy blooms make it as attractive in a cutting garden as it is in a pollinator border.
Partial Sun
Moderate
7-10
24in H x 24in W
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Moderate
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Bright pink flowers arranged in stacked whorls bloom reliably from mid-summer into early fall, drawing hummingbirds and other pollinators with steady magnetism. The plant thrives on neglect once established, tolerating both heat and drought while remaining deer-resistant. You get a full season of cut-worthy color without fussing, and it performs equally well in full sun or partial shade across a wide hardiness range.
Mexican Giant Hyssop serves primarily as an ornamental herb and pollinator plant. The showy pink flowers are prized for fresh cutting, holding their color and form well in arrangements. Gardeners grow it specifically to attract hummingbirds and other nectar-seeking insects to borders and cottage gardens.
No timeline data available yet for this variety.
Cut flower stems as blooms open in mid-summer through early fall for fresh arrangements. The dense whorled flower spikes hold color well and can be harvested at any point during the bloom window.
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“Agastache mexicana is endemic to Mexico, where wild populations grow in oak forest communities at considerable elevation in central Mexico. This species represents a distinct lineage adapted to cooler mountain conditions and variable moisture, which informs how it behaves in gardens across North America. The 'Summerlong Lemon' cultivar represents modern selection work aimed at extending bloom time and refining the plant's garden performance.”