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Kieft Seed Scheduling Tool

Hibiscus Luna™

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Data is gathered from our Elburn, Ill., trials (Zone 5a) for a North American audience. Warm-climate growers: expect 1-2 weeks earlier finishing. Cool-climate growers: expect 1 week slower. Dates based on standard 288 plug size.
Spring/Summer
Week color desired
Quart
(1 ppp)
Gallon
(1 ppp)
Sow week
 
 
Plug transplant week
 
 
Not recommended for Spring sales. Difficult to force into flower even with heat and long day lighting.
Late-Summer/Fall
Week color desired
Quart
(1 ppp)
Gallon
(1 ppp)
Sow week
 
 
Plug transplant week
 
 
Notes/Pitfall Management
Seedlings can stretch very quickly leading to poor quality plugs. Trimming plugs does not work well. An A-rest spray on the seed at sowing can reduce initial stretch. Post germination, B9/Cycocel is useful. Sumagic can also be used but can lead to hard, stunted plugs. Plugs and containers should be grown above 68F ADT or crop times will be much longer and cultural issues can arise.
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