These estimates for how long Helianthus dentatus takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Days to Germination How long does it take Helianthus dentatus to germinate?
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Days to Transplant How long until I can plant out Helianthus dentatus?
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Days to Maturity How long until Helianthus dentatus is ready for harvest / bloom?
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Total Growing Days How long does it take to grow Helianthus dentatus?