When to plant
Direct sow or transplant in spring after last frost, or in late summer for fall harvest. Extremely cold-tolerant — survives frosts down to 25°F with protection. One of the best heat-tolerant greens for summer. Can harvest from a single planting for the entire season. Excellent in zones 3–10.
Soil & site
Well-drained, fertile soil with good organic matter. pH 6.0–7.0. Work in compost before planting. Chard tolerates slightly saline soils better than most vegetables. Consistent moisture prevents bitterness and bolting.
Feeding
Moderate feeder. Apply nitrogen-rich fertilizer every 3–4 weeks to keep leaves tender and large. A compost side-dressing in midsummer can extend the harvest season well into fall. More nitrogen = larger, more tender leaves.
Common problems
Leaf miners create silvery winding tunnels (remove affected leaves; cover with row cover to prevent adult flies from laying eggs). Aphids on new growth. Cercospora leaf spot (tan spots with purple borders) in wet conditions. Generally very easy to grow.
When to harvest
Outer leaves are ready when 6–10 inches long. Young, tender leaves are mild-flavored and excellent raw. Larger leaves are more robust-flavored, better cooked. Harvest before leaves become oversized, tough, or yellowing. The plant should have at least 4–5 inner leaves remaining after harvest to continue producing.
How to harvest
Snap or cut outer leaves at the base of the stem, working from the outside in. Leave the inner cluster of young leaves untouched — the plant will keep growing from the center. This cut-and-come-again method gives harvests every 1–2 weeks from the same plant for months. Never harvest more than a third of the plant at once.
Storage & use
Refrigerate unwashed in a plastic bag for up to 1 week. Separate colorful stems from green leaves — stems take longer to cook. Stems can be pickled or used like celery. Leaves can be used raw in salads (young leaves) or cooked like spinach. Blanch and freeze for long-term storage.
Companion planting
Swiss chard does well with most vegetables. Keep it away from beets as they compete.
Useful for growing chard
A few things that make this one easier — chosen for this plant, not a generic list.
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