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