Underwatering a spider plant could be the reason it is not producing spiderettes. The Spider Plant does not tolerate drying out completely between waterings. Water when the soil volume is 50-75% dry. Be sure to water thoroughly and discard any excess water in the saucer. Try watering your Spider Plant with distilled water to prevent brown leaf tips and ensure you evenly distribute the water over the soil.
Too Much or Too Little Light
Your spider plant should be placed in bright, indirect sunlight. Too much direct sunlight hitting the Spider Plant can cause scorch marks on the leaves and begin to negatively affect the plant’s health. Too little light and the plant is not able to photosynthesize properly. Either of these extremes will cause your plant to go into survival mode, leaving it without the extra energy needed to produce spiderettes.
If your spider plant gets too big for the pot it is in, it risks becoming rootbound. Every couple of years, you might need to re-pot your Spider Plant to accommodate the growing root system and give it optimal room to grow and stay healthy. Becoming rootbound restricts the growth of any plant. This can cause the older leaves to die off and discourages new spiderettes from growing. Check for roots poking out of the top or bottom of the pot. Another sign your plant might be rootbound is if the water rushes straight through the pot when watering.