If you can shave three days off of any task that usually takes ten, that’s a good thing, right? Introducing new HORTICUBES® XL Hydroponic Seed Propagation Medium: The first to dramatically improve root penetration and boost speed-to-transplant flexibility. See more fully-developed roots, visibly penetrating the bottom of the XL cube in just seven days. And gain valuable control over your nursery crop time. A seed propagation miracle? Yeah, it’s kinda like that.