Poisonous Plants

Also, if a field is surrounded by a hedge, make sure it is not a poisonous one. Watch for poisonous plants in neighboring fields because the spores will invariably seed themselves in your pasture.

It is vital to search the field on a very regular basis for any poisonous plants. Do not use a field for horses if it contains a large number of poisonous trees, such as oak, because the horses will eat the acorns, which lead to severe colic.

It is just as important to inspect fields that you may wish to take a hay crop from for poisonous plants, which are sometimes just as deadly eaten in hay as in the pasture.