These are aquatics whose natural environment is consistently warmer throughout the year. The plants often need no period of dormancy, living all year long in comparatively warm and sunny surroundings where moisture levels remain relatively stable. Tropical plants will suffer if they do not receive year 'round the amount of warmth, sunlight, and moisture that they prefer. The Heavy Sleepers Sleep is critical to our health and well being. When we do not get enough sleep, our physical and mental stamina erodes and we become more susceptible to illness.
Dormancy is just as vital for many plants as sleep is for humans.
Water plants that require a period of dormancy suffer if they are not permitted to take their seasonal rest. They slowly decline in vigor and usually fail to bloom in succeeding years. Eventually they will die, succumbing to a virus or disease, or falling prey to an insect attack. Dormany may be induced by a drop in water temperature, by a decline in day length, or by a combination of both. Aquatics that are temperature-sensitive will gradually go dormant as the weather cools.