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.
Some plants, like roses (Rosa spp.) are noted for fragrance. Hydrangea (Hydrangea spp.) is not. The most popular type, big leaf hydrangea (Hydrangea macrophylla), hardy in U.S. Department of Agriculture plant hardiness zones 6 through 9, has little fragrance, though a few cultivars may be scented.yramidal or cone-shaped flower panicles appear in late summer or early fall. They are white at first, aging to pink. All panicle hydrangeas have some scent, but varieties like Big Ben (Hydrangea paniculata Big Ben) have a more pronounced fragrance.