Powdery mildew can be a problem. PLANTING ZINNIA SEEDS When to plant: As long as there is no further threat of frost, zinnias can be planted any time through the end of June. Start seeds indoors in individual containers, set out purchased plants, or direct-sow into warm soil. How to Plant Zinnias. Start seeds four to six weeks before the last frost date in your area. See back of seed packet for variety-specific advice. Sow and Plant. Subscribe for more gardening videos! The holes should be about a quarter of an inch (.6 centimeter) deep for the zinnias to grow … Zinnia seeds should germinate within 10 to 21 days. Thread leaf Zinnia – Zinnia angustifolia (Z. haageana) Flower Color Height Season Pests Uses Propagation orange, white 10"- 15" summer Japanese beetles borders and edging seeds Performance - An excellent small flowered zinnia for Kentucky gardens. (Many common varieties are planted 6 inches apart within the row and 2 feet in between rows.) You may be able to find the … Also known as the Blue Point zinnia (wh So far, I am really happy with the results of pinching them off while the plants are young. Use your fingers to make small holes in the ground. Thanks for watching! The thread leaf zinnia is resistant to all typical zinnia … Sow two seeds to a pot or module and then thin out the weakest seedling to leave the strongest of the pair. Plant zinnias in late spring, after the last frost has passed and the soil is warm. If sowing outdoors the seeds need to be sown thinly in a sunny position. Zinnia found in: Zinnia 'Forecast', Zinnia elegans 'Queen Lime', Zinnia elegans 'Giant Double Mixed', Zinnia elegans 'Queeny Lime Red', Zinnia elegans.. Poke seeds into the soil about one-half inch (1 cm) deep and 3 inches (8 cm) apart. Once they begin to germinate thin the seedlings until they reach the spacing of between 30 and 38cm apart. Reassuringly, the seeds are large enough to handle individually. Pinching Zinnias For Bushy Plants And More Blooms-Growing Zinnia Flowers. reseed easily, creating a cut-and-come-again garden each summer. If you wish to start growing zinnia plants from seeds indoors, plant the seeds in peat pots, poo pots (pots made from cow dung) or other biodegradable containers that can be planted directly into the garden later. Sow zinnia seeds only about ¼-inch deep. Space plants 4 to 24 inches apart, depending on variety. In fact, it’s a great idea to plant multiple rounds at 2- to 3-week intervals up until the end of June for non-stop blooming into fall. Plant into good garden soil or compost containing John Innes No.2 at the end of May when all risk of frosts have passed. Plant dwarf zinnia seeds, which can grow as short as 10-inches tall. Zinnias (Zinnia spp.) Great in form, comes in a variety of colors, and absolutely massive when it comes to their size - a good four feet tall (if not taller) with large 3-4” flowers that are absolutely stunning. 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