Do Houseplants Need Humidity?
Most house plants can survive in normal room humidity.
A peace lily browns and tropical plants dry out quicker in rooms with low humidity. It is best to get a humidity meter to check the air is at 60 percent or higher. It is easy to fix the humidity by buying a humidifier and grouping plants together.
Humidity also depends on the area the house plant is located - deserts are dry and swampy areas are humid. Airconditioning and heating also makes the air dry in a home, so a humidifier may need to be used.
But one thing to watch out for is if there is no airflow around the plants, mold will start to grow on the potting soil or growing medium. To prevent mold from growing, a fan is needed to circulate the air. Sometimes even if a window is open it is not enough airflow to keep mold from growing.
How Often Should a Plant be Repotted?
Part of plant care is repotting the potted plant. The type of potting mix varies depending on the plant. For sure the pot shouldn't be filled with just potting soil. At the very least it needs to have perlite so that the soil is loose and doesn't hold water. Other plants need more air to pass through and wood chips, charcoal, and perlite are part of the potting mix.
If the roots are growing out the bottom of the pot that is a good sign to repot houseplants. The pot should be a size bigger so that the plant isn't shocked. Some people repot a new plant, but that is to check the roots and they repot to the same pot size.
How Do You Prevent Pests?
It is so disheartening to see a healthy houseplant become overridden with pests!!! The most annoying pest are fungus gnats, mostly because they multiply pretty quickly. The best thing to do is to treat any new plants with systemic granules. It is sprinkled on the soil and it seeps into the soil and keeps pests at bay. It has to be reapplied every so often.
Another product to buy is a foliar spray to prevent spider mites and other pests. It is also good practice to immediately spray a new plant with this and then spray it once a month.
If you really want to take care of your plants, they can be cleaned by placing them under the shower, then letting them dry. Doing this once a month is common practice for plant lovers. Then systemic and foliar spray is used as a preventative measure.