Zinnia
Zinnia elegans • Asteraceae
🌱 Seed Category
Flower
🌍 Origin Region
Mexico and Central America
📅 Days to Maturity
60-75 days to bloom from seed; continuous bloom until frost with deadheading.
🌡️ Hardiness Zones
USDA Zones 2-11 (grown as an annual); not frost tolerant.
About This Seed
The seeds are flat, shield-shaped to lanceolate achenes, ranging from light tan to dark brown with a ribbed or slightly rough texture. One end is typically tapered or pointed. The resulting plant is an upright, branching annual with stiff hairy stems and opposite, lance-shaped leaves, producing vibrant, daisy-like or pompon-style flowers.
Growing Information
Growing Season
Spring/Summer; direct sow after last frost
Germination
Takes 4-7 days at 70-85°F (21-29°C). Light is not required but seeds should be barely covered. Germination rate is typically high (>80%).
Planting Instructions
Planting depth: 1/4 inch; Spacing: 6-12 inches apart; Soil: Fertile, well-draining soil with a pH of 5.5 to 7.5.
Sunlight & Water Needs
Full Sun (6+ hours); moderate watering at the base to avoid foliage disease; high drought tolerance once established.
Companion Plants
Beneficial with Peppers, Tomatoes, and Beans to attract pollinators; avoid planting in overcrowded damp areas with Cucurbits.
Special Characteristics
Highly attractive to butterflies and pollinators; excellent cut flower; heat tolerant; susceptible to powdery mildew if airflow is poor.