White clover (Trifolium repens) is found throughout the temperate regions of the world and is limited only by extreme cold or heat or by drought. In the United States, white clover is found in the eastern half of the country and in the Pacific Northwest.

White clover does best in well-drained silt loam and clay soils of pH 6.0 to 7.0. It does not tolerate saline or highly alkaline soils.

Ladino, New Zealand, and "common" white clover are the most frequently used varieties.

Red clover is an herbaceous perennial or biennial legume with erect, leafy stems that originate from a thick crown and terminate with a flower head. Height at maturity is about 2 feet.

Flowers are pink-purple or magenta. Seeds are small, oblong, and yellow, reddish-brown, or dark gray.

When used in annual rotations, fall and winter growth is slow, but spring growth is rapid.

Red clover grows well on a wide range of soil types from loams, silt loams, and sandy loams as well as on clayey soils. Tolerates temporary waterlogging. The optimum pH range is 6.6-7.6.

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