The Succulent Source is an exception. The primary color of this plant is green. This is because it is a source for chlorophyll, as the plant has only vestigial leaves. It is important to find out if the plant you are buying is suitable for your hardiness zone or not. Some cats may ignore your plants entirely, while other cats might find your plants appealing and irresistible. If the temperature is high, you can give your plants a light misting once in awhile.