Zinnia
Scientific Name: Zinnia elegans (most common species; includes various hybrids and cultivars)
Common Names: Zinnias
Native to: Mexico and Central America
Lighting Requirements: Full sun. Zinnias thrive in bright sunlight and require at least 6–8 hours of direct light daily for optimal blooming.
Height: 6 inches to 4 feet, depending on the variety
Width: 6 to 18 inches, depending on the variety
Winter Look: Grown as annuals in most climates, dying after the first frost.
Seasonal Interest: Summer to fall, with vibrant blooms during warm weather
Drought Tolerance: Moderate. Zinnias prefer consistent moisture but can tolerate brief periods of drought once established.
Soil Requirements: Well-draining, moderately fertile soil. They grow best in soil that is amended with organic matter.
pH Range: 5.5 to 7.5 (slightly acidic to neutral)
Hardiness Zones: USDA Zones 2 to 11 (grown as annuals in all zones)
Deer Resistance: Moderate. Zinnias are not highly attractive to deer, though they may be browsed if other food is scarce.
Attracts: Butterflies, bees, and other pollinators
Potential Issues: Susceptible to powdery mildew, leaf spot, and spider mites. Proper spacing and good air circulation help prevent fungal diseases. I suggest applying a fertilizer with seaweed regularly and keeping some neem oil on hand to treat if needed.
Notes: Zinnias are among the easiest and most rewarding flowers to grow, providing bright, cheerful blooms in a wide range of colors, including red, orange, yellow, pink, purple, and white. They are available in various forms, from single and double flowers to dahlia-like blooms. Zinnias are excellent for cutting gardens, borders, and mass plantings. They perform best in warm weather, with deadheading or cutting blooms encouraging continuous flowering. Plant zinnias in areas with good air circulation and avoid overhead watering to avoid powdery mildew.
This old-fashioned favorite is loved by many. Me? I'm on the fence.
Unfortunately, they are susceptible to powdery mildew, blight, and some insects. I'm sure with the right gardening program, these issues can be managed or prevented. Make sure to keep them in full sun with good airflow around them. Inspect for disease often.
I do like the Profusion series. They are more disease-resistant and more prolific in the blooming department.