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Zinnias are one of the easiest annuals to grow, grow quickly, and bloom heavily. They make a massive burst of color in your garden.
Zinnias have bright, solitary, daisy-like flowerheads on a single, erect stem. The most common zinnia is “dahlia-flowered” and grows up to three feet. Other types are “cactus-flowered.”
You can also use in an annual or mixed border. Zinnias are very popular for cut flowers.
Botanical Name: Zinnia elegans
Plant Type: Flower
Sun Exposure: Full Sun
Soil Type: Any/ Loamy/ Sandy
Flower Color: Multicolor, Orange, Pink, Purple, Red, White, Yellow
Special Features: Attracts Butterflies
Zinnias are grown from seed; they grow very quickly in the right conditions. Zinnias do not like to be transplanted.
Full sun and warm weather is essential for good blooms.
Zinnias are adaptable but prefer fertile, humus-rich, well drained soil at pH preference 5.5 – 7.5.
If soil is amended with compost, the flowers will grow more quickly.
Space plants 4 to 24 inches apart depending on variety.
Germination occurs at 74 to 80 degrees F in 5 to 76 days.
Sow in succession for a longer flowering display.
Deadhead to prolong flowering.
Maintain moderate soil moisture and fertilize lightly.
Zinnias will die with the first frost.
Pests/Diseases : Bacterial and fungal spots, powdery mildew, bacterial wilt. Minimize wetting of foliage to avoid disease. Caterpillars, mealybugs, and spider mites also cause problems. Avoid spraying and tolerate some leaf damage unless the situation is uncontrolled.
Harvest/Storage : Zinnias generally take 60 to 70 days from seed to flower (though it depends on conditions).
Sources: www.almanac.com/plant/zinnias, plinthetal.com/2013/09/11/zappy-zinnias, www.planetnatural.com/growing-zinnias, palmraeurbanpotager.com/2013/07/30/fresh-cut-zinnia-flowers-from-your-urban-potager