When can you stain over linseed oil?

You can stain over linseed oil once the oil has fully cured, which typically takes about 3 to 7 days, depending on temperature and humidity. It's important to ensure that the surface is not tacky and feels dry to the touch. Lightly sanding the cured linseed oil can also help the stain adhere better. Always test the stain on a small area first to ensure compatibility.