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