AP BIOLOGY

Detailed explanation-1: -When the plants start to outgrow the pots, the roots do not get sufficient space to spread. They need more space, and hence you must repot them into a bigger pot.

Detailed explanation-2: -Plant roots feed your soil microbes and soil microbes feed your plant roots. Plants devote a significant amount of their energy to cultivating and feeding beneficial soil microbes via their root exudates. In exchange, those symbiont microbes help feed and protect the plants.

Detailed explanation-3: -Plants typically benefit from being repotted every 12 to 18 months, depending on how actively they are growing. Some slow growers, like cacti, can call the same pot home for years, but will just require a soil replenishment.

Detailed explanation-4: -Typically, changing the soil in your potted plants should happen every 12 to 18 months. There are some exceptions that may change this timing. These include if you’re moving a plant into a bigger pot because it’s outgrown its current pot or if the soil has become very hard.