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.
Step 1. Use borage as a companion plant with any other plant in your garden. Borage increases the productivity of neighboring plants by attracting bees and pollinating insects. It repels tomato hornworms if planted with tomatoes, and cabbage worms when planted with brassicaes.tep 1. Use borage as a companion plant with any other plant in your garden. Borage increases the productivity of neighboring plants by attracting bees and pollinating insects. It repels tomato hornworms if planted with tomatoes, and cabbage worms when planted with brassicaes.