Tillandsia air plants grow naturally in South and Central America and southern parts of the United States. They are in the Bromeliad family and are sometimes referred to as "air plants".
No soil is needed to grow these unique plants. All water and nutrients are taken through the leaves. Their roots are used as wire-like anchors.
Air plants have a growth cycle starting with one plant growing to maturity and then blooming. One to two months after the bloom has finished, new plants form around the base of the "mother" plant. They will then eventually mature and complete their blooming cycle in one to several years, depending upon the variety and growing conditions.
Light requirements: Bright, indirect light, fluorescent office lighting, or frost-protected shaded patio. Generally, no direct sun is recommended. Some varieties can handle some early morning sun - this will allow them to "blush" (change colors).
Water: This is a very important aspect of succeeding with Tillandsia air plants! Remove plants from their containers and spray them or rinse them under a faucet until they are dripping wet (underneath as well as on top). Remember, they grow naturally where it rains. Water indoor tillandsia air plants every 10 days. Some larger varieties will benefit from a deep soaking while smaller vaieties prefer misting. If leaf edges begin to curl in, then it is best to use the soaking method.
Succulents and cacti are generally found in arid environments and they are used to dry soil conditions.
Water: While succulents are native to arid regions and generally thrive in poor soils, it does not mean one should not water them or provide nutrients.
How often should you water? There is no answer that is universally correct. There is a direct relationship between water, light, temperature, soil conditions and humidity. The higher the light level and temperature and the less humid the more often watering is required.
Most succulent and cacti can go for a whole month in beteween watering but when done, make sure to do it heavily.
Light requirements: Direct sun and light are not the same. Succulent plants need light but they grow better if they don't cook in the midday sun. In the wild you will find young plants tucked under a bush, tree or something else that provides filtered light. If new growth on your plant is pale green and elongated, it needs more light. If the side of your plant facing the light source is yellow, tan, red or indented, it is getting too much light.