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Growing Zinnias

Growing Zinnias

Peppermint Stick Zinnias



Zinnias are heat and drought-tolerant flowering annuals available in various heights and with single or double flowers in a range of colors. They are great for adding color to garden beds, patio pots, and mixed containers. Zinnia flowers are attractive to butterflies, and taller types are excellent cut flowers. Their flowers attract butterflies and pollinating insects.

How To Plant

Seed can be sown directly in the garden after the last spring frost or indoors 6 to 8 weeks earlier. Plant seed 1/8 to 1/4 deep and maintain temperatures of 70 to 75 degrees. Germination usually takes 5 to 10 days.

Site zinnias in full sun in moist, well-drained soil.


Deadheading promotes strong continued flowering. Zinnias are tolerant of being grown near black walnut trees.

Fertilizer Recommendations

Moderate feeders, plants benefit from regular fertilization. Use low rates of ALGOplus Flowering Plant 4-6-7 liquid fertilizer or Neptune Fish & Seaweed Fertilizer 2-3-1.

Common Problems

Zinnia is usually free of serious pests and problems, and easy-to-grow. Japanese beetle may feed on the plants. Powdery mildew and leaf spot diseases are sometimes a problem. Some varieties, including the Profusion and Zahara varieties, are disease-resistant and less prone to disease infection.

Captain Jack's Deadbug Brew can be used to control Japanese beetles. Use 70% neem oil if diseases affect plants.

Alternative Products

Other good annual cut flowers include celosia, annual Rudbeckia, and statice.

Product Recommendations

Combines well in the landscape with plants with attractive foliage like Silver Dust dusty miller and Purple Majesty ornamental millet.

Zinnia Facts

The genus name Zinnia was established to honor German botanist Johan Gottfried Zinn (1727 to 1759).


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Growing Tips