A close up of Orange King Zinnia on a white background.
Bouquet of Orange King zinnia in an orange and white checkered vase on a white background.
Man holds a bouquet of Orange King zinnia in the garden.
Several Orange King zinnia blooms on a grey background.
A close up of Orange King Zinnia on a white background.
Bouquet of Orange King zinnia in an orange and white checkered vase on a white background.
Man holds a bouquet of Orange King zinnia in the garden.
Several Orange King zinnia blooms on a grey background.

Zinnia Seeds,
Orange King

4.26 ReviewsSKU: #FL818Min. seed count: 100
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Description

(Zinnia elegans). Tall plants produce big, bright mandarin orange flowers. A stunning color that really makes a bold statement.

Growing Tips: Orange King zinnias are an heirloom variety that grows best in full sun with nutrient-rich, well-draining soil. To improve the size and quality of the blooms, add compost before planting. Cut frequently or remove spent flowers for the highest production.

Plant Details

Botanical Name
Zinnia elegans
Life Cycle
Annual
Sun Requirement
6–8 hr.
Days to Germinate
4–6
Days to Maturity
75–90
Planting Depth
¼ in.
Plant Spacing
9–12 in.
Ideal Temperature
70–95°F
Frost Hardy
No

When to Grow

For a longer bloom period, start seeds indoors about 4 weeks before the last frost date, or sow directly outdoors once frost risks have passed. Orange King zinnias grow best at soil temperatures around 75-80 F and usually take about 75-90 days to mature from seed, blooming until the first frost of fall. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow seeds 1/4 inch deep and space plants 9-12 inches apart so that they get adequate airflow, which reduces the risk of powdery mildew. Water immediately after planting, keeping the soil consistently moist but not waterlogged until germination in about 4-6 days. If starting indoors, use biodegradable pots or other means to minimize root disturbance when transplanting​.

How to Grow

These zinnias are drought-tolerant once established but benefit from regular, moderate watering during dry spells. Light fertilization every few weeks encourages growth and continuous blooming. Taller plants may require staking in windy areas to support their stems, which can reach 3-4 feet in height.

How to Save Seeds

  • Allow the flowerhead containing the seeds to mature and dry on the plant.
  • Clip off the flowerhead and place it in a paper bag or other container.
  • Working over the top of another clean, opened container, rub the flowerheads between the palms to break them apart.
  • The seeds can be separated from the chaff by first screening and then winnowing.
  • Store in a cool, dry, dark place over winter.

FAQ

How large are Orange King zinnia blooms?

The blooms can reach up to 4-5 inches across.

Do Orange King zinnias attract pollinators?

Yes, they are popular with bees, butterflies, and other pollinators, making them an excellent addition to pollinator-friendly gardens.

Are Orange King zinnias suitable for containers?

Yes, they grow well in large containers with full sun and rich soil.

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