Grow a Garden 2 - Seed Restock Timer does not collect, store, or transmit any personal data.
Your watched-seed selections and settings are stored locally in your browser (and synced via your own browser account if you enable browser sync).
The extension only makes read-only requests to https://gag.gg to fetch public seed-restock timing and to load seed icons; no personal or browsing data is sent.
Full policy: https://gag.gg/privacy