Clover lawns are lawns that are planted with clover ... against planting a clover called the "bad-luck" clover (aka alsike clover, Trifolium hybridum) because of its extreme toxicity to horses.

Clover lawns make a great sustainable alternative ... The clovers above are considered safe for pets, although alsike clover (Trifolium hybridum) can be toxic to horses, according to the ...