How to Grow Organic Rainbow Swiss Chard Seeds:
Organic Rainbow Swiss Chard is a cool-season leafy vegetable grown for its multicolored stems and tender greens. Direct sow outdoors in early spring as soon as soil can be worked, or in late summer/early fall for a fall–winter crop; in hot climates, sow during the cooler months. Choose full sun to light shade and well-drained, moderately rich soil. Sow seeds 1–1.5 cm (½ in) deep, about 5–8 cm (2–3 in) apart, with 30–45 cm (12–18 in) between rows. Keep the topsoil evenly moist; germination usually takes 7–14 days. Each “seed” is actually a cluster, so several seedlings may sprout together—thin to 20–25 cm (8–10 in) apart for full-size plants, or leave closer if you want baby-leaf harvests.
How to Care for Organic Rainbow Swiss Chard:
Water consistently for sweet, tender stems—letting soil dry out too much can make leaves tougher or more bitter, while soggy soil can cause root issues. Mulch helps hold moisture and cool the soil. Feed lightly but regularly: mix compost in before planting, then side-dress with compost or a balanced vegetable fertilizer every 3–4 weeks, especially after heavy picking. Harvest outer leaves when they reach 15–20 cm (6–8 in) tall, cutting at the base and leaving the center to keep producing; plants will regrow for months. In heat, give afternoon shade and extra water to delay bolting. Watch for leaf miners, aphids, and caterpillars—remove damaged leaves early and keep airflow good. Rainbow chard tolerates light frost and often tastes sweeter in cool weather; in mild winters it can overwinter and bounce back in spring.
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