They require daily watering.” Most indoor-garden kits use either a self-watering or hydroponic system to grow plants. I started with a self-watering system — the Click-and-Grow model — and ...

Back in 2015 when garden-products giant Scotts Miracle-Gro Co. formed its Hawthorne Gardening Company to sell indoor hydroponic plant-growing systems, Colorado had just approved adult-use cannabis.