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