Your pumpkin hills have 3–5 seedlings each. Time to thin.
Crowded pumpkins compete for water, nutrients, and light, yielding smaller fruit and more disease. Two to three strong plants per hill is the sweet spot.
Use scissors to snip unwanted seedlings at soil level. Pulling disturbs roots of the keepers. Choose the stockiest, healthiest plants.
Pumpkins are heavy feeders. Start with a water-soluble balanced fertilizer now. Repeat in 4 weeks. Then switch to a fertilizer with higher phosphorus and potassium (middle and last numbers) — like 5-10-10 — to support fruit development over vine growth.
Large leaves transpire heavily — over a gallon per day per plant in heat. Keep soil consistently moist, not soggy. Mulch helps.
Thin early, feed strategically, water steadily. That's the formula for big pumpkins.
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