If you’re like most of us, you’ve probably had a lot of ads for flowers popping up in your feed this week. That’s because flowers are now America’s most popular Mother’s Day gift, according to a recent report. Mother’s Day now trumps Valentine’s as florists most busy holiday. What else are you searching for? Probably jewelry, which shows a 17 percent increase in the six weeks leading up to the big day. But are classic mother’s day gifts like flowers and jewelry toxic? Here are four things you should know to shop more sustainably for mom.