Lilac Emperor is a stunning heirloom zinnia that brings bold, spiky petals and rich lilac-purple blooms to gardens across hardiness zones 2 through 11. This heat-loving annual grows 30 to 36 inches tall, producing large, eye-catching flowers that bloom within 70 to 90 days of planting. Thriving in full sun with moderate water and well-drained soil, it transforms sunny garden beds and containers into pollinator magnets, drawing bees, butterflies, and beneficial insects throughout the season.
Full Sun
Moderate
2-11
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Moderate
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The Super Cactus form sets this lilac zinnia apart with its distinctive spiky petals that create dramatic texture and visual interest. These nectar-rich blooms are irresistible to pollinators, turning your garden into a living hub of activity. The tall, vigorous growth habit and bold purple hue make it a standout performer in both garden borders and cut flower arrangements, rewarding gardeners with continuous blooms until frost.
Lilac Emperor excels as a cut flower, where its tall stems and large, dramatic blooms command attention in arrangements. In the garden, it serves as a bold backdrop plant and a powerful pollinator attractor, supporting bees and butterflies during peak bloom season. Its vibrant lilac-purple color makes it valuable for creating color-coordinated plantings and adding vertical interest to mixed borders.
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Start seeds indoors 6 to 8 weeks before your last frost date. Sow seeds on the soil surface or barely press them into moistened seed-starting mix, as they need light to germinate. Keep soil temperature between 70 and 80 degrees Fahrenheit for best germination, which typically occurs within 7 to 10 days. Provide bright light once seedlings emerge.
Transplant seedlings outdoors after the last frost date when soil has warmed to at least 60 degrees Fahrenheit. Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days. Space plants 12 to 18 inches apart in full sun.
Direct sow seeds into garden soil after the last frost date and soil has warmed. Press seeds lightly onto moist soil surface; they need light to germinate. Keep soil consistently moist until seedlings emerge.
Cut flowers for arrangements once blooms have fully opened and petals have unfurled completely, typically in the early morning when stems are most turgid. Cut stems at an angle just above a leaf node or branch point. For the longest vase life, harvest when the bloom is fully mature but before petals begin to fade or drop.
Pinch back the growing tips of young plants when they reach 6 to 8 inches tall to encourage bushier, more branched growth and increased flower production. Deadhead spent blooms regularly throughout the season to redirect the plant's energy into producing new flowers rather than seed, extending bloom time until frost.
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“This heirloom variety preserves the boldness that made zinnias beloved garden staples across generations. Lilac Emperor carries forward the legacy of classic zinnia breeding, selected and maintained for its commanding height, vibrant color, and the distinctive cactus-form petals that distinguish it from simpler varieties. Its continued availability through seed catalogs speaks to its enduring appeal among gardeners who value reliable, striking blooms.”