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Moisten your starter mixture before planting your seeds. If you water after sowing the seeds, they can easily float on the edges of the container, not where you want it. To moisten the mixture, simply pour it into a bucket, add hot water and stir. After about eight hours (or when the mixture has absorbed water), fill your containers with the moistened mixture.
Plant at least two, but not more than three, seeds per container. The seed pack usually tells you the depth to plant, but a good rule is three times deeper than the smaller seed diameter. (Some flower seeds require light to germinate – if that's the case, just put the seeds on the surface of the mixture, then gently tamp them with your finger.)
After planting your seeds, cover the tray loosely with plastic to create a moist environment. At 65 ° to 70 ° F, your seeds should germinate very well without any extra heat. If the room temperature is cooler, you can keep the seeds warm by placing the tray on a warming mat specially designed for starting the seeds.
Tomato, zucchini and pumpkin seeds should grow their seeds through the surface of the mixture within a few days. Peppers grow in about a week. And some seeds, like parsley, can take up to three weeks to germinate – so be patient!
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