Vegetables
Swiss Chard
A resilient leafy crop that tolerates repeated harvesting and a wider temperature range than lettuce.
Beta vulgaris subsp. vulgaris
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Photo: USDAgov / Public domain
At a glance
- Difficulty
- beginner
- Maintenance
- low
- Time to harvest
- 45–65 days · from-seed
- Water need
- moderate
- Growth habit
- upright leafy rosette
- Indoor suitability
- possible
- Support
- Usually not required
What this plant must have
These are minimum limits, not aspirational targets. Missing one can prevent healthy growth.
- Minimum direct light
- 3 hours
- Minimum container depth
- 20 cm (≈ 7.9 in)
- Minimum container volume
- 6 L (≈ 1.6 US gal)
- Active growth range
- 3–30 °C (≈ 37.4–86 °F)
- Frost behaviour
- tolerant
Conditions it prefers
These conditions improve performance, but there may be room to adapt within the hard limits above.
- Ideal direct light
- 4–7 hours
- Ideal temperature
- 6–27 °C (≈ 42.8–80.6 °F)
- Preferred depth
- 25–35 cm (≈ 9.8–13.8 in)
- Preferred volume
- 10–18 L (≈ 2.6–4.8 US gal)
- Drainage
- well drained
Overview
A resilient leafy crop that tolerates repeated harvesting and a wider temperature range than lettuce.
What makes it practical
Sow a few seeds and thin to the strongest plant in each position because seedlings often emerge in clusters.
What limits success
At least 3 hours of direct light; provide at least 20 cm of container depth and avoid treating the minimum as the preferred setup.
Getting started
Sow a few seeds and thin to the strongest plant in each position because seedlings often emerge in clusters.
Before planting
Prepare a container with open drainage and enough volume for the plant's mature root system. The documented minimum is 6 litres.
Planting
Sow a few seeds and thin to the strongest plant in each position because seedlings often emerge in clusters.
Position
Aim for 4–7 hours of direct light while watching for heat reflected from walls or glass.
Ongoing care
Water when the upper mix begins to dry and remove tired outer leaves to keep the center productive.
Watering check
This crop's water need is moderate. Check the mix itself instead of watering by a fixed weekday schedule.
Harvesting
Cut outer stalks near the base once large enough, leaving the growing point intact.
Timing
The documented range is roughly 45–65 days from seed; temperature and cultivar can shift it.
Beginner mistakes
Treating chard as a tiny salad leaf crowds mature plants that need more room than lettuce.
A useful reset
Change one condition at a time, then judge the newest growth rather than expecting damaged leaves to recover.
Troubleshooting context
Start with the visible symptom and rule out moisture, light, temperature, and root-room conflicts before assuming disease.
Relevant symptom
The launch troubleshooting library links this plant to brown leaf edges as a useful first diagnostic path.
Frequently asked questions
- How much light and root room does swiss chard need?
Swiss Chard needs at least 3 hours of direct light. It needs a container at least 20 cm deep holding about 6 litres. A 25–35 cm container with 10–18 litres is easier to keep evenly watered. Expect roughly 45–65 days from seed, which shifts with temperature and cultivar.
Editorial review:
Reviewed by NookHarvest Editorial Team
How we review adviceCorrections and questionsProblems and next steps
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Vegetables
Set up the container
Container Gardening
Choose pots, mix, drainage, and plant combinations that make small-space care more forgiving.
Troubleshoot a likely symptom
The Leaf Edges Are Turning Brown
Brown edges can follow drying, salt buildup, heat, cold glass, or root damage; the surrounding conditions distinguish them.