How Often Should You Water Spider Plants?

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A healthy spider plant will produce new plants.
A healthy spider plant will produce new plants. (Image: Nathan Blaney/Photodisc/Getty Images)

Spider plants are popular houseplants because they tolerate average to low light and have even been shown to improve indoor air quality. Like most houseplants, they are susceptible to overwatering and overcare. This low-maintenance plant doesn’t require as much water as you’d think.

Factors

According to the Colorado State University Extension, how frequently you water your spider plants depends on several factors, including the type of spider plant, the size of the plant and the container and the plant’s stage of growth. Another important factor is the soil type. If you use a potting soil that contains a lot of peat moss, letting it dry out completely will make it difficult to remoisten.

When to Water

The North Carolina State University Extension warns growers not to let a houseplant wilt. Once a plant begins to wilt its roots have been adversely affected by lack of water. It’s best to check on your spider plant on a regular basis. Stick your finger in the soil and if the soil is completely dry to a depth of at least 1 1/2 inches -- 2 inches for a large pot and 1 inch for a pot smaller than 6 inches in diameter -- water it.

How Much Water

Water your spider plant until the soil is thoroughly moist and some water runs out the bottom of the pot. That extra water will help leach salts from the soil and the root zone. Discard the extra water so it isn’t reabsorbed.

Type of Water

Purified water is the best for spider plants. Generally, spider plants are sensitive to fluoridated tap water and water high in soluble salts, which can cause leaf tip burn. If you can’t purify the water, let tap water sit at room temperature overnight before pouring it into your spider plant. North Carolina State University advises against the use of softened water.

References

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