A horticulture tray including a growing cell. The growing cell includes a first end, a second end, a sidewall, and a plant supporting portion. The first end defines a first aperture having a first diameter. The second end is opposite the first end and has a second diameter that is smaller than the first diameter. The sidewall extends between the first end and the second end, and the sidewall continuously tapers from the first end to the second end. The plant supporting portion is proximate to the second end, but spaced apart from the second end. The plant supporting portion is configured to support a plant within the growing cell apart from the second end. The growing cell promotes proper root structure by supporting stabilized growth plugs therein without horizontal surfaces and by creating a perimeter gap such that air can circulate around the growth plugs to air prune roots.
