Green Circle is the oldest hydroponic store in Kansas City, and one of the oldest hydroponic stores in the USA. Come see us for grow lights, hydroponic gardens, carbon dioxide (CO2) systems, plant nutrients and supplements, rockwool growing media, high pressure sodium & metal halide replacement bulbs, odor killers, temperature & humidity controllers, ph & tds tools, books and much more. Come see us for all your organic and hydroponic growing needs - we will treat you to 20 years of experience selling the best products at the best prices.

12 E. Missouri Ave. Kansas City, MO.

( In The Historic Farmer’s Market )

(816) 421-1840