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