Sprouting Time - Knowledgebase Question

Ashland, ME
Question by betty836
April 17, 2001
Could you please tell me how long normally takes for impatiens, petunias and brachychome to sprout? I planted these about a month ago and have yet to see anything come up. It is very frustrating, I keep the soil moist, and have a greenhouse so it is warm. what am I doing wrong!!!


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Answer from NGA
April 17, 2001

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Impatiens can take up to about three weeks, but petunias usually only take half that at most, so there is a problem. The soil mix should be barely damp (excess moisture can cause rotting) and for these plants, the soil temperature should be fairly warm, in the 75 degree range for best results. Since soil temperature tends to be about five degrees cooler than the room temperature, most gardeners will use a source of bottom heat for these seeds. Keep in mind too that overheating can "cook" seeds.

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