Root rot in squash is caused by a combination of overly wet soil, poor drainage, and soil-borne fungi or water molds that thrive in those soggy conditions.   If you’ve been wondering what causes root rot in squash, the short answer is that it almost always comes down to waterlogged … Read more

Squash leaves turn yellow for several reasons, ranging from simple nutrient deficiencies to serious diseases that can wipe out your entire crop if left unchecked.   If you’ve been wondering what causes squash leaves to turn yellow, the answer usually comes down to a handful of common culprits.   Sometimes … Read more

Powdery mildew on squash plants is caused by fungal pathogens in the genus Podosphaera and Erysiphe, which thrive in specific environmental conditions.   Unlike many fungi that need wet leaves to spread, powdery mildew on squash actually prefers warm, dry days paired with cool, humid nights.   If you’ve noticed … Read more

Powdery mildew on squash is caused by a fungal disease that attacks the leaves, stems, and sometimes the fruit of your plants.   If you’ve ever walked out to your squash patch and noticed a dusty white coating on the leaves, you’ve met powdery mildew on squash up close.   … Read more

Mold on squash plants is caused by fungal spores that land on wet leaves and stems and then multiply when the conditions stay humid and warm for too long.   Those fuzzy gray or white patches you see on your zucchini, butternut, or yellow squash are usually a sign that … Read more

Mildew on squash leaves is caused by fungal pathogens that thrive in warm, humid conditions and spread rapidly when airflow around your plants is poor.   If you’ve noticed a white, powdery or fuzzy growth spreading across your squash leaves, you’re dealing with one of the most common problems gardeners … Read more

Fungus on squash plants is usually caused by a combination of moisture, warm temperatures, and poor air circulation around the plant.   If you’ve been wondering what causes fungus on squash plants, the answer almost always comes back to one thing: too much water sitting on the leaves for too … Read more

Brown spots on butternut squash are usually caused by a fungal or bacterial infection, though they can also be a sign that your squash is simply overripe.   If you’ve been wondering what causes brown spots on butternut squash, you’re in the right place.   Whether you’re dealing with them … Read more

Bumps on yellow squash are usually caused by one of a few common issues, and figuring out which one you’re dealing with is the first step to fixing it.   Most of the time, those bumps on yellow squash come from pests, viral infections, or a simple cosmetic condition called … Read more

Blossom end rot on summer squash is caused by a calcium deficiency in the developing fruit, which is almost always triggered by inconsistent watering rather than a lack of calcium in your soil.   That’s the short answer, and it surprises a lot of gardeners who rush out to buy … Read more