You should water a spider plant once per week, but it depends on whether the spider plant is a young plantlet or a larger adult. It’s a good idea to test the soil before giving it some water. Don’t water a spider plant if the soil is still moist. These plants can tolerate dry soil for a day or two, so only water when the soil feels dry, which should be once every week or so.

Spider Plantlet Watering

These small plantlets need a lot of water, especially during the summer months. They need the water to grow new leaves and strong roots. I water my spider plantlets twice a week, but make sure to use a pot with adequate drainage.

With this said, it can be wise to check the soil before giving the plant a second dose of water for the week. There is a chance that the plantlet didn’t require that much water or the soil retained a lot of the water, so give a quick finger test. Push the tip of your finger into the soil to see if it’s dry or moist. Soil that is completely dry should be given a sprinkle of water until it is moist again.

Large Spider Plant Watering

When you have a fully-grown spider plant on your hands, you need a slightly different watering schedule. Unlike the younger plants, your adult spider plant should only need to be watered once a week. I also add some fertilizer once every two weeks.

You shouldn’t need to adjust your watering schedule too much when the seasons change, but you may find that the watering frequency can be decreased by a few days during the winter months. You may even find that your plant will be fine if you accidently forget to water it during the winter (I confess to have done this once or thrice).