Hydrogardens X TERIS, IT STARTS WITH YOU. Agricultural and Horticultural Input Supplies. Since 1964, Hydrogardens X TERIS has been the largest supplier of procurement services and advice in Quebec and in eastern Canada for farmers, gardening centers, greenhouses, horticulturists, industry professionals, nurseries, and retailers. With the right values in the right places and a commitment to customer success, Hydrogardens X TERIS has become the industry benchmark. Offering a turnkey service, we are partners in your success so you can focus on what really matters. WE HAVE THE GREEN THUMB. Environmentally conscious, we offer a range of natural and biodegradable products. By reducing our impact, we sincerely believe that we can contribute to environmental initiatives.