Usually when people start a kitchen garden, they initially do not face any major problems as the plant will grow well. However after the plant will bear fruit or flowers, the person who has grown the plant will face problems from a variety of pests who will kill the plant.
Caterpillars are the most dangerous pests as they will eat up all the leaves. Other pests which cause an equal amount of damage are ants, birds, aphids, flies, locusts and in some cases small animals. so it is advisable to monitor the plants closely and take immediate action when a pest is observed as causing havoc.