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Botanical Name
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Zinnia elegans
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Planting Season
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Warm
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Soil Temp
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70° F+, 21°C+
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Planting Depth
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½”, 1.2cm
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Area to Sow
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50′ row, 15.2m row
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Days to Germ.
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3-10+
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Days to Maturity
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55+
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Best Planting Method
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Direct
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Thin to
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≥2″ apart, 5cm apart
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Final Spacing
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≥12″ apart, 30.5cm apart
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Succession
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14 days
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Plant Spread
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12-14″, 30.5-35.6cm
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Plant Height
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30-40″, 76.2cm-1m
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Planting California Zinnia Seeds
- Zinnia seeds are small and flat. They should be sown close to the surface of the soil. If you are starting the seeds indoors in trays or in starter pots, start seeds in a high-quality seed starting mix. Sprinkle the seed on top of well-moistened soil and cover with 1/4″ (.6cm) of finely sifted soil. Seeds will germinate in 3-10+ days.
- If you wish to direct sow the seeds, sow in well-worked soil that has been finely raked clear of debris. Cover with 1/4″ (.6cm) well-sifted soil.
Growing California Zinnia
- This old fashioned annual flower works well in vegetable gardens, wildflower gardens, and more! It’s easy to grow and makes an excellent cut flower. We grow zinnias both for cut flowers and to bring important pollinators to the farm.
Growing California Zinnia in Containers
- If you are planting zinnia in containers, make sure your container is at least 10″ (25.4cm) deep. We do not recommend planting more than one plant per container as zinnias can get large. Overcrowding will cause the plant to be unhappy and provide fewer blooms. The larger the container, the more blooms you will get. Keep in mind containers will dry out faster because they have more surface area and less soil to hold onto moisture.
Harvesting California Zinnia Flowers
- Cheerfully colored zinnia blooms spread joy in the garden and make for great cut flowers too. Harvest flowers early in the morning and place directly in a vase of room temperature water for the longest-lasting blooms.
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