Why Is My Spider Plant Turning Yellow?
Yellow leaves on a houseplant often trace back to watering, so check the soil before you change anything else.
Check soil moisture before adding water. Wet soil points to overwatering. Dry soil points to a nutrient shortage or natural lower-leaf shedding.
What’s normal for Spider Plant
- Light: Bright indirect
- Water: Dry slightly between
- Pet safety (ASPCA): Cats — non-toxic, Dogs — non-toxic. Verify on ASPCA
Pulled from the full Spider Plant care guide — every spec cited from primary horticultural sources.
Three things to check, in order
- Cause 1
Overwatering
Iowa State Extension calls overwatering a common reason houseplants fail and lists yellowing or browning leaves among its symptoms. Roots that sit in wet soil for long periods develop root rot.
Fix: Stop watering. Check the soil and water again only when it is dry down an inch or two, as Iowa State Extension advises. Check that drainage holes are clear and the saucer is empty.
Source: Iowa State Extension — Problems Related to Poor Culture
- Cause 2
Nitrogen deficiency
Iowa State Extension notes that when a plant runs short of nitrogen, older, lower leaves usually turn pale green to yellow first, because nitrogen moves to newer growth when supplies are limited.
Fix: Fertilize while the plant is actively growing. Iowa State Extension advises once or twice a month for most houseplants, with all-purpose fertilizer mixed at half or quarter strength.
Sources: Iowa State Extension — Nitrogen Deficiency; Iowa State Extension — How to Care for Houseplants
- Cause 3
Natural leaf shedding
Plants shed older leaves as they grow. Iowa State Extension says that if only a few older leaves drop from a plant that otherwise looks very healthy, there is no need to worry.
Fix: If only a few of the oldest leaves are yellowing and new growth looks vigorous, nothing to fix. Clip the yellow leaf, move on.
Source: Iowa State Extension — Problems from Improper Environmental Conditions