How to Grow Swiss Chard
A tip sheet on how to grow and care for Swiss chard.
Swiss Chard (Beta Vulgaris)
- Family: Chenopodiaceae (Goosefoot)
- Hardiness: Hardy
- Nutrient needs: Medium
- Water needs: High
- Ease of growing: Easy
- Common propagation: Seed
- Germination temperatures: 50°F to 85°F
- Germination time: 5 to 21 days
- Viability: 5 years
- Direct sow: mid-April to mid-July
- Weeks to grow transplants: 4 to 6
- Start: March to June
- Plant out: May to August
- Spacing for baby greens: 1” apart
- Spacing for larger leaves: 6” x 18”
- Plants per square foot: 4 to 16
- Time to harvest: 30 to 60 days from seed
Swiss chard is very closely related to beets and in the same family as spinach. Cultivars vary in the color of their leaves and their midribs. Leaves can be green to red, while midribs can be white, red, or yellow. Some varieties are so attractive that people include them in their ornamental gardens. Fordhook Giant is the most well-known green variety and works well for both baby and bunching greens. More colorful varieties with bright red petioles include Ruby Red.
Preparation and planting
Grow Swiss chard as a summer substitute for spinach. It is slow to bolt and can stay in the ground right through the hottest part of the summer, faithfully producing succulent leaves. Direct seeding is the most common way to start chard, but you can also use transplants to get an earlier start on the season.
Swiss chard’s needs are similar to beets. If grown on poor soils, the plants will benefit from a midseason nitrogen application; otherwise, they perform well with little or no fertilizer. Keep the soil moist. Plants that become drought-stressed are more likely to produce a flower stalk and stop leaf production.
Insects: Flea beetles, aphids, European corn borer, leaf miners slugs
Diseases: Downy mildew and fungal leaf blights
Harvesting and storage
Harvest the outer leaves and avoid damaging the inner ones. Keep in mind that the younger leaves are the tastiest, so harvest before leaves get too big. If the plant isn’t damaged, harvesting can continue for up to two years. Store as you would other greens; wash them, bag them and place them in the crisper of your refrigerator.
Developed by James Manning, Undergraduate Research Assistant, and Daniel Brainard, Vegetable Extension Specialist; MSU Department of Horticulture; Gary Heilig, MSU Extension educator.