Edible plants are shaping up to be a sustainable gardening trend for 2026 — and with so many homeowners looking to add more herbs, fruits, and vegetables to their gardens to reduce their grocery costs, Costco's plant program has arrived at exactly the right moment. The Costco garden and plants program is one of the warehouse's most commercially surprising sections for members who have not yet discovered it — because the same institutional pricing model that makes Kirkland Sig