Gomphrena globosa 'Atomic Purple'
Overview
Uses: Annual borders, cottage gardens, pollinator plantings, and cutting gardens.
Benefits: Vivid purple globe-shaped bracts that hold their color for months. Heat and drought tolerant, long-blooming, and perfect for both fresh and dried floral arrangements.
USDA Hardiness Zones: 9 – 12 (grown as an annual in colder zones)
Life Cycle: Tender perennial (grown as a warm-season annual outside Zones 9–12)
Sun: Full Sun
Mature Height: 18" – 24"
Mature Width: 12" – 18"
Bloom Season: Summer through Frost
Growth Rate: Moderate to Fast
Summary
Gomphrena globosa ‘Atomic Purple’ is a stunning selection of Globe Amaranth known for its bold, fluorescent purple blooms that seem to glow in the summer sun. Each globe-shaped flower head consists of papery bracts that retain their vivid color long after harvest—making this plant a favorite for both garden displays and dried floral work.
Unlike many annuals that fade in midsummer, ‘Atomic Purple’ thrives in the heat, blooming continuously until frost. Its upright habit, strong stems, and exceptional color retention make it an ideal choice for pollinator gardens, border edges, or mass plantings in sunny beds.
Easy to grow, low maintenance, and dependable—this Globe Amaranth delivers pure summer energy in every bloom.
Care
Globe Amaranth ‘Atomic Purple’ Care
Plant in full sun after all danger of frost has passed, or start seeds indoors 6–8 weeks prior to your last expected frost date. Transplant outdoors once soil has warmed to at least 65°F.
Grows best in well-draining soil and tolerates poor or sandy conditions once established. Water consistently during establishment, then allow the soil to dry slightly between waterings—Gomphrena prefers not to stay soggy.
Fertilize lightly every 4–6 weeks with a balanced slow release fertilizer to support continuous blooms and sturdy stems.
Deadheading is optional but will encourage new flowering. For dried arrangements, harvest when the blooms are fully colored and hang upside down in a dry, shaded area with good air circulation.
Size
Size of Globe Amaranth ‘Atomic Purple’ for Sale Online
Our Globe Amaranth ‘Atomic Purple’ plants are greenhouse-grown and shipped healthy, ready to thrive in your sunny beds or containers. Each plant is carefully selected for quality. For current sizing and availability, please contact us.
Size of Globe Amaranth ‘Atomic Purple’ When Fully Grown
Expect plants to reach 18"–24" tall and 12"–18" wide at maturity, forming neat, rounded mounds topped with dozens of glowing purple blooms.
Additional Information
Is Globe Amaranth ‘Atomic Purple’ a perennial or annual?
It’s a tender perennial in Zones 9–12, but is typically grown as a warm-season annual in most climates due to frost sensitivity.
Does it attract pollinators?
Yes—Globe Amaranth is a magnet for butterflies, bees, and beneficial insects throughout the summer season.
Can Globe Amaranth be grown in containers?
Absolutely. It performs beautifully in pots and mixed planters when provided full sun and well-drained soil.
Is Globe Amaranth good for drying?
Yes—‘Atomic Purple’ is one of the best varieties for dried arrangements. Its color remains intense for months when dried properly.
Is Globe Amaranth toxic?
No, Gomphrena globosa is non-toxic to people and pets. It’s even used in herbal teas and traditional medicine for its antioxidant properties.
