Swiss Chard
Beta vulgaris subsp. vulgaris
A beet bred for leaves instead of roots, and it produces from June until hard frost.

The all-season green
Chard does not bolt in summer heat the way spinach and lettuce do, and it tolerates frost at the other end. One spring sowing produces continuously from June until a hard freeze, which makes it the highest-value leafy green per square foot in a home garden.
Same thinning rule as beets
Chard is the same species as beet, and the seed is a multi-seed cluster. Thin to one plant per station, then to eight to twelve inches apart. Crowded chard makes small leaves.
Sow direct or transplant
Both work. Direct sow half an inch deep after last frost, or start indoors three to four weeks earlier for a head start. A second sowing in midsummer gives fresh young plants for autumn.
Harvest outer leaves
Take the outside leaves at the base, cutting or snapping cleanly, and always leave the central growing point with several young leaves. Cutting the whole plant works but sets it back considerably.
Feeding and water
Side-dress with nitrogen every month or so to keep new leaves coming through a long season. Steady moisture keeps the stems tender - drought makes them stringy.
Pests
Leaf miners are the main problem, as with spinach and beet, and row cover is the answer. Slugs shelter in the crowns. Cercospora leaf spot causes small round spots with purple edges in humid weather; remove affected leaves.
Overwintering
In zone 6b/7 chard often survives the winter under mulch and resprouts in spring, though it bolts fairly quickly once it does. The spring flowering shoots are edible.
Kitchen and storage
The stems and leaves cook at different rates - separate them and start the stems first. Coloured varieties look striking but the white-stemmed types are generally the most productive and tender. Keeps about a week in the fridge; freezes well blanched.
- Days to harvest
- 50-60
- Spacing
- 8-12 in
- Row spacing
- 18 in
- Sun
- Full to part
- pH
- 6.0-7.0
- Heat
- Tolerant
- Frost
- Tolerates hard frost
- Harvest
- Continuous