Gardening supplies can be found at many hardware stores such as Lowe's, Menard's, and Home Depot. We even sell a few supplies here on our website. These are all fine if you need basic items like fertilizer, but may not work if you need something more specialized.
If you need something more specialized, we recommend taking a look at Hydrofarm. This site has a large selection of both standard and specialized gardening equipment and supplies. Unfortunately you can only buy their products if you have a business account set up with them, but luckily, we do. If you find anything from either site that you want to purchase, feel free to contact us to make arrangements. We get many of our own growing supplies from Hydrofarm, so we are happy to help you purchase any items you find on their websites.
Of course, we always recommend you check out any local gardening shops you might have in town first. Being a small business, we encourage our customers to support other small businesses. Do you have a local place you'd like to give a shout out to? Let us know in the comments!