Plant Care Myths

Written by Administrator | 01 September 2004

A number of ideas have been believed to be rules of plant care. Some of these ideas were based on the ideal conditions in greenhouses however, and are inappropriate for houseplants in more trying conditions.

Myth: Plants grow bigger in bigger pots.

Fact: The fastest growing plants are those which are moderately pot bound. Frequently repotted plants put much energy into growing more roots, at the expense of the foliage. Plants in large pots are also more likely to suffer from root rot.

Myth: Ailing plants will benefit from plant food.

Fact: Plant food is not medicine. It is intended for plants that are using up the existing nutrients. Excess nutrients can burn roots and cause leaf discoloration. Ailing plants absorb fewer nutrients than healthy plants.

Myth: Indoor plants need lots of direct sunlight.

Fact: Only some indoor plants benefit from this. Many common indoor plants suffer from “sunburn” when exposed to direct sun.

Myth: Yellow leaves and brown tips mean under watering.

Fact: These symptoms have many possible causes including too much water, inadequate light, fluoridated or soft water, or a change in atmosphere.

Myth: Misting plants will increase the humidity for plants.

Fact: Misting plants increases humidity by so little that it has no practical value. Misting does help keep plants clean, however.  There are some exceptions however, particularly in a desert environment.

Myth: Most indoor plants need high humidity to thrive.

Fact: Most common houseplants adapt well to the dry indoor environment. They will be fine, as long as they receive adequate moisture through their roots.

Myth: Chemical pesticides are the only effective way to eliminate plant pests.

Fact: There are many safe “home remedy” treatments for pests, including mild dish soap, rubbing alcohol, lemon juice, and hot pepper.

Myth: Most indoor plants go dormant in the winter.