Garden pests

• A garden pest is what one considers a pest. The beautiful Tropaeolum speciosum can be considered a pest if it seeds and starts to grow where it is not wanted. As the root is well below ground, pulling it up does not remove it: it simply grows again and becomes what may be considered a pest.
• In lawns, moss can become dominant and be impossible to eradicate. In some lawns, lichens, especially very damp lawn lichens such as Peltigera lactucfolia and P. membranacea, can become difficult and be considered pests.