Mexican Sunflower Seeds Tithonia rotundifolia – Heirloom Non-GMO Blooms for Pollinator Gardens
$ 26.91
Description Mexican Sunflower Tithonia rotundifolia – Bold, flame-colored blooms on towering, pollinator-friendly plants A fast-growing annual that commands attention with large, velvety, orange-red daisy flowers. Reaching impressive heights, it creates a dramatic backdrop for borders and makes an outstanding cut flower. Loved by bees, butterflies, and hummingbirds, it thrives in heat and full sun. Common Name: Mexican Sunflower, Tithonia Latin Name: Tithonia rotundifolia Plant Height: 4–6 ft (120–180 cm) Seeds per Gram: ≈ 150 seeds/gram Life Cycle: Annual (fast-growing, blooms first year) Available Color: Mixed: Orange, Red-Orange, Golden Yellow Non-GMO · Open-pollinated · Heirloom type · Exceptional for pollinators & cut flowers Botanical & Variety Details Common name(s)Mexican Sunflower, Tithonia, Red Sunflower, Mexican Torch Latin nameTithonia rotundifolia (formerly Tithonia speciosa) – classic tall border selection Mature height120–180 cm (4–6 ft) — sturdy, branching stems ideal for back of borders Seeds per gram~150 seeds/gram (approx. 4,250 seeds/oz) Growth cycleAnnual — grows rapidly, blooms from midsummer until frost Ornamental periodMidsummer to first frost (continuous blooms if deadheaded) Unique trait Velvety, flame-colored petals · Magnet for bees, butterflies & hummingbirds · Drought tolerant Planting & Growing Guide Best planting seasonSpring, after all danger of frost, when soil has warmed (zones 3–11 as an annual) ️ Ideal temperature70–75°F (21–24°C) for germination; grows best in 65–85°F (18–29°C) ☀️ Shade requirementFull sun is essential (minimum 6–8 hours of direct sun). Tolerates no shade — weak stems and few blooms if light is limited. Sowing rate (per m²)0.5–1 gram per square meter (approx. 75–150 seeds/m²) for a bold, clustered display. Sowing depth1/4 inch (6 mm) — cover lightly with soil or vermiculite; keep evenly moist for optimal germination. Water & careModerate water until established; drought tolerant thereafter. Avoid overwatering to prevent root issues. Spacing after thinningThin or transplant to 12–18 inches (30–45 cm) apart to allow sturdy branching and airflow. Days to bloomApprox. 75–90 days from sowing (first flowers appear mid to late summer). Sun requirement: Full sun produces the strongest stems, largest flowers, and richest orange-red tones. In any shade, plants stretch, flop, and bloom sparsely. Provide plenty of direct sunlight throughout the day. Pro density tip: For cutting gardens, sow 1 g/m² and thin to 18″ apart. For a naturalistic meadow or mass border, sow 0.5 g/m². Succession sow every 2–3 weeks for a continuous flame of color until frost. Sowing quick guide: Spring · Full sun · 0.5–1 g/m² · Cover ¼″ deep Germination 70–75°F | Full sun essential for strong growth Harvest when flowers are fully open for vibrant, long-lasting bouquets. Remove spent blooms to extend flowering. Deer resistant · Heat loving · A magnificent choice for pollinator gardens and dramatic summer borders.






