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