![]() ![]() If you're sowing zinnia seeds indoors, sow them in any good seed compost at the beginning of spring and transfer to a heated propagator, sunny windowsill or find a suitable spot in your greenhouse ideas. Prefer to know how to grow zinnias from seed? Zinnia seeds sown straight into the soil outside are less prone to being attacked by disease but seeds sown indoors or also have a good chance of flourishing. There's more climbing plant support ideas in our feature. When they’re about 45cm tall, nipping out the main buds encourages them to branch out and grow bushier. Zinnias are half hardy and won’t like cold night time temperatures so don't be tempted to plant them out too soon.Īs they develop, support the tall varieties with canes and string or with pea and bean netting stretched horizontally. Once the risk of frosts has passed it's time to plant them up in good garden soil or compost containing John Innes No 2. Just be aware that mail-order plug plants can be shaken up in the post, and end up getting bruised which can lead to problems with diseased plants.Ĭarefully unpack your plug plants and keep them in indoors until needed. It's also a good option if you don’t have the space needed for how to grow flowers from seeds at home. You can buy zinnias as plug plants, which is ideal if you want to learn how to grow zinnias and get off to a flying start at the beginning of the growing season. ![]()
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