Beating Nematodes & Heat in Central Italy’s Clay Soil

Root-knot nematodes + 104°F summers + clay soil = tough conditions. Skip nightshades (nematode magnets). Plant zucchini or butternut squash—nematode-resistant and heat-tolerant.

Pre-plant treatment: Apply organic Grub-Away (Gardens Alive) + plant marigolds densely between crops—their root exudates kill nematodes. Solarize with black plastic 2–3 months. Amend clay heavily with compost, leaf mold, peat for drainage. Mulch deeply.

One season of this regime clears nematodes. Then rotate freely.