A number of problems can cause a plant's leaves to turn yellow, such as too much sun, lack of nitrogen, iron chlorosis or pest infestations, depending on the type of plant and its current habitat. number of problems can cause a plant's leaves to turn yellow, such as too much sun, lack of nitrogen, iron chlorosis or pest infestations, depending on the type of plant and its current habitat.
Plumbago plants, also known as plumbago auriculata or cape leadwort, grow well in warm climates. They are a great addition to a garden, as they attract butterflies and are ignored by deer. Plumbagos are bushy plants that can grow 3-10 feet high and just as wide, according to Gardening Central.
Antagonists. There is always good and bad, and the same is true with companion planting. Certain plants should not be used as companion plants for potatoes. These include turnips, pumpkins, cucumbers, rutabagas, sunflowers, tomatoes, squash and raspberry. These antagonistic plants can hinder potato growth.