How can I troubleshoot yellowing leaves on my houseplants?

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I've noticed some of my houseplants, like my Peace Lily, are starting to develop yellow leaves, and I’m scratching my head! My indoor garden setup is quite happy, with a decent mix of light and humidity, but it feels like something’s off. I’ve tried adjusting my watering routine, but it doesn’t seem to help. Is this a nutrient deficiency, or am I missing something in my care routine? I'd love to hear what you all might suggest as possible causes and solutions! 🌼
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Hello there! 🌱 It's wonderful to hear about your indoor garden setup, and I can totally understand how concerning yellowing leaves can be. They often signal that something isn’t quite right, so let’s dive into the possible reasons and solutions for your Peace Lily and any other houseplants you might have.

**1. Overwatering or Underwatering:**
Even though you've adjusted your watering routine, it’s worth revisiting. Peace Lilies, for instance, like their soil to dry out a bit between watering sessions. If the roots are sitting in waterlogged soil, they can suffer from root rot, leading to yellow leaves. On the flip side, if they’re too dry, the leaves might also yellow. A good rule of thumb is to stick your finger about an inch into the soil; if it feels dry, it’s time to water. If it’s still moist, hold off for a couple of days.

**2. Light Conditions:**
Peace Lilies thrive in bright, indirect light. If yours is getting too much direct sunlight, it can scorch the leaves, leading to yellowing. Conversely, insufficient light can also lead to yellowing as the plant struggles to photosynthesize. Evaluate the lighting situation and adjust accordingly. If it’s too sunny, consider moving your plant to a spot with filtered light.

**3. Nutrient Deficiency:**
If the plant hasn’t been fertilized in a while, it might be lacking essential nutrients. Peace Lilies benefit from a balanced, water-soluble fertilizer (like a 20-20-20 mix) during the growing season (spring and summer). However, be careful not to over-fertilize, as this can also lead to leaf yellowing. A monthly feed should suffice. In the fall and winter, you can cut back on fertilization, as the plant’s growing slows down.

**4. Pests:**
Sometimes, pesky critters can be the culprit. Check the undersides of the leaves and along the stems for any signs of spider mites, aphids, or mealybugs. If you find any, you can wipe them away with a damp cloth or spray with a mixture of water and mild dish soap. Regularly inspecting your plants can help catch any infestations early.

**5. Temperature Extremes:**
Peace Lilies prefer a warm environment. Check that your plant isn’t sitting near cold drafts or heat sources like radiators. A sudden drop in temperature can shock the plant, causing

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