How to Grow Japanese Sapporo Hot Pepper Seeds:
Japanese Sapporo is a productive Capsicum annuum with slim, 5-inch peppers that go from green to bright red and have mild-to-medium heat. Start seeds indoors 8–10 weeks before your last frost (or before your cool season ends). Sow 0.5 cm (¼ in) deep in seed-starting mix, keep evenly moist, and maintain warm soil—around 25–30°C (77–86°F). Germination usually takes 7–14 days. As soon as sprouts appear, give strong light 12–16 hours a day so seedlings stay stocky. When plants have 2–3 true leaves, pot up to larger containers. Harden off for 7–10 days, then transplant outdoors only when nights stay warm (above ~18–20°C / 65–68°F). Plant in full sun with fertile, well-drained soil, spacing 45–60 cm (18–24 in) apart. Set stakes or a cage at planting time because plants get heavy with fruit.
How to Care for Japanese Sapporo Hot Peppers:
Water deeply and consistently—keep soil moist but never soggy. Uneven watering can cause blossom drop or misshapen fruit, so mulch to stabilize moisture and temperature. Feed lightly but regularly: mix compost in at planting, then use a balanced vegetable fertilizer every 2–3 weeks; once flowering starts, switch to a fruiting/bloom fertilizer (lower nitrogen, higher potassium) for better pod set. In very hot weather, light afternoon shade can reduce flower drop. Gently shake plants during bloom to help pollination if pollinators are scarce. Watch for aphids, whiteflies, spider mites, and caterpillars; treat early with neem or insecticidal soap and keep airflow good by removing crowded inner leaves. Harvest green peppers young for fresh cooking, or wait until fully red for the best drying flavor. Pick often—regular harvesting keeps the plant producing until the end of the warm season.
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