Answer: Baby Tears is an often cultivated Irish Moss (Helxine solemolii). It likes bright light and moist soil and is often used as a groundcover in wetland areas. These growing condition preferences indicate that your yard needs some help with drainage! It could be that the soil is compacted and doesn't dry out as it should between waterings. The moss is shallow rooted, so pulling it up is probably your best defense. You might try to enrich the soil in your garden beds, to facilitate better drainage. Hand-pulling is probably the best way to eradicate Baby Tears from your garden.
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