The contract address for the GROW (ERC-20) is 0x1223334444A7466fBf985B14E1F4EdAf3883bCa6
You can see more details of the contract here.
Disclaimer: GROW is a digital reward distributed through the Grow node network according to predetermined smart contracts. GROW is designed to have utility on the Grow platform for the purchase of Grow products and services, although other cryptocurrencies may be used as well. GROW is not available for purchase from Grow. GROW is not an investment product and may never have any value. Grow node owners should not expect to recognize any value from GROW other than its utility with Grow. Although Grow plans to undertake efforts to become a successful business. It is highly likely that GROW’s value will not correlate with the success or failure of Grow.