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