These estimates for how long Solidago harperi 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 Solidago harperi to germinate?
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Days to Transplant How long until I can plant out Solidago harperi?
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Days to Maturity How long until Solidago harperi is ready for harvest / bloom?
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Total Growing Days How long does it take to grow Solidago harperi?