![]() ![]() Plant Problems – Identify the causes and find the cures. They will not survive a hard frost or freeze. They may survive the first light frost with only a little damage. Zinnias are annuals and are susceptible to frost. Improve the appearance of Giant Zinnias, by trimming back stems that have grown long or gangly. Remove dead flower blooms, to encourage new growth and blooms. The blooms will continue, up to the first frost. Water plants during dry periods, once or twice per week.Īdd mulch around the plants for appearance, and to keep weeds down.Īround mid-summer, your Zinnia plants will begin to produce flowers. Zinnias are the workhorse of the farmer’s. Many varieties of zinnias will last from seven to 12 days in a vase. In addition to zinnias’ spectacular garden show where ever you need a burst of color, zinnias are an incredible cut flower. Once Zinnia plants are established, they should grow well. It is not too late to plant a few zinnia seeds for late summer color that will last until the first frost. Add a general-purpose fertilizer once a month, especially with average soils. ![]() Improving your soil quality will produce much healthier plants and flowers, so add plenty of compost. But, they are very tolerant of average to slightly poor soils. Zinnia seeds are quick to germinate and take only 4 to 9 days to sprout when the soil temperature is 70 degrees F. Zinnia plants like rich, well-drained soil. In hotter areas of the country, they will do well in partial shade. Growing Annual Zinnias is a cinch! They are one of the easiest flower plants to grow in your home flower garden. ![]()
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