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.
Musat/iStock/Getty Images. Garden hydrangeas (Hydrangea spp.) are grown for their showy blooms, but not all varieties have a fragrance to go with the flowers. For a sweet scent as well as beautiful flower clusters, plant climbing, oakleaf or panicle hydrangea.runing for Flowers. If you want to enjoy the fragrance of hydrangea flowers, you have to make sure you prune hydrangeas at the right time for each species. Pruning at the wrong time of the year can actually prevent flower formation.