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