Based on the provided information, spider plants are sensitive to certain minerals that can damage their leaves. While the excerpt doesn't explicitly state that spider plants need calcium, it implies that minerals in general can have adverse effects. It's important to note that the source highlights the damaging effects of certain minerals on spider plant leaves, suggesting that while some minerals are beneficial, others, including calcium, might need to be managed carefully.
Therefore, the answer is nuanced: Spider plants likely benefit from small amounts of calcium as a micronutrient, but excessive calcium or minerals in general can cause issues.
