Yes, pigs can eat cucumber plants.
The provided reference explicitly states that pigs have been fed cucumber vines, along with other garden plants like green bean plants and corn stalks. This suggests that cucumber plants are safe for pigs to consume.
Therefore, cucumber plants can be included as part of a pig's diet. It is important to ensure that the plants haven't been treated with pesticides or herbicides harmful to pigs. As with any new food, introduce cucumber plants gradually to avoid digestive upset.
