This spoils later blooming. Causes of premature blooming are, exposure to cold temperatures when planted too early, or remaining in packs or flats too long in the spring. Celosia grows one to one and a half feet tall and is spaced 10 to 12 inches apart. The heads may be larger if the seed is planted directly into the garden. If started indoors they germinate in 10 to 15 days at 70 to 75 degrees.
Plant indoors six weeks before the desired outdoor planting date.
Seedlings should be grown warm and on the dry side. Visuals associated with this text. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension.