Why might indoor garden plot plants have more continuous problems from insects and mold than outdoor plants that get the same amount of fertilizer and water?

Answer 1

That the drainage may be less favorable to growth and that the environment is more confining are two reasons why indoor garden plot plants may have more continuous problems from insects and mold than outdoor plants that get the same amount of fertilizer and water. Specifically, gardeners sometimes over feed and over water wilted looking houseplants. They may interpret that wilted look as the need for more water. But in actuality, it may be initially difficult to recognize the fine differences between wilted looks from over watering and under watering.

Outside, plants may be able to deal better with improper feeding and watering schedules. For example, too little feeding and watering may be dealt with through the natural processes of dew formation and rainfall events. Too much feeding and watering may be dealt with by the roles of other ground cover in the area and by infiltration and percolation routes within soil. Specifically, some of the over watering may be taken in by more shallowly rooted plants. Pore spaces below ground may help channel moisture away from where there's too much and towards where it's not enough.

It all comes down to the confined space of pots indoors, as opposed to the wider framework within which plants outdoors fit. Generally, there may be more options and more space for dealing with insect and mold problems outside in nature than inside in the home or greenhouse.

Answer 2

That beneficial insects may be absent, that circulation may be deficient, extreme or inconsistent, that drainage may be less favorable to growth and that the environment may be less conducive to health and more confining account for four reasons why indoor garden plot plants may have more continuous problems from insects and mold than outdoor plants that get the same amount of fertilizer and water. Gardeners sometimes consider wilted looks as specific to the need for feeding and watering even though wilt results from over- and under-watering. Plants counter improper feeding and watering schedules with air and moisture pore spaces, drainage, infiltration, osmosis and percolation to more shallowly rooted, needier neighbors, with beneficial insects and the drying effects of sunlight and with supplementary dew, irrigation and rain.