leafy green
EdibleSwiss Chard
Beta vulgaris subsp. vulgaris
Considered non-toxic to cats and dogs (source: ASPCA).
Some direct sun — an east or west window, or a few hours of direct light.
Keep evenly moist — water when the top inch of soil is dry.
Forgiving and beginner-friendly.
Swiss chard is one of the most productive and tolerant indoor greens, with colorful stalks and a long harvest window. Pick outer leaves and the plant keeps making new ones from the center.
About Swiss Chard
Swiss chard (Beta vulgaris subsp. vulgaris) is a leafy green grown for both its leaves and its colorful stalks. It descends from wild sea beet along the Mediterranean coast, and it's the same species as beetroot, bred for tops instead of roots. For a rental it earns its space by lasting. You pick the outer leaves and the crown keeps pushing out new ones for months, so one sowing in a 6-litre pot outlasts a tray of lettuce.
Chard takes medium light and steady water, so it's manageable on a windowsill that doesn't get full sun, and a grow light suits it fine. It handles warmth better than spinach and won't bolt as quickly, which gives a longer harvest window. Give it a deeper pot than you'd use for salad greens, since it reaches about 0.3 to 0.4 m. A first cutting is usually ready around 50 to 60 days from sowing.
What it’s like to grow
Chard is one of the easier greens to keep happy. It asks for medium light and even moisture, and it signals trouble in plain ways. Pale, floppy leaves mean it isn't getting enough light. Wilting between waterings means the pot dried out. If it goes outdoors at any point, check the undersides for leaf-miner trails and aphids. It's non-toxic to cats and dogs, and its long, forgiving harvest makes it a good pick for someone who wants a green that keeps giving without much fuss.
What to expect
First harvest in about 50–60 days. It’s forgiving, so it’s a good one to learn on. No sunny window? It also does fine under a clip-on grow light.
See what you’ll need to get started ↓Companions
Tips
- Harvest the outer leaves and leave the central crown to keep producing.
- Give it a roomy, deeper pot; it grows larger than lettuce.
- It tolerates more warmth than spinach without bolting as fast.
Common problems
- Leaf-miner trails or aphids if exposed to outdoor air.
- Pale, floppy leaves in insufficient light.
Common questions
Is Swiss Chard toxic to cats and dogs?
Swiss Chard is non-toxic to cats and dogs, which makes it a safe pick if you have pets. Source: ASPCA.
How much light does Swiss Chard need?
Swiss Chard does best in medium, indirect light: near an east or west window, or a little back from a bright one. Direct midday sun can scorch it.
How often should I water Swiss Chard?
Water Swiss Chard when the top inch of soil feels dry, then let it drain. Aim for evenly moist, not soggy.
What temperature does Swiss Chard need?
Swiss Chard is happiest around 13–24 °C. It tolerates brief dips to about -7 °C, but cold drafts and sudden chills set it back.
How long does Swiss Chard take to grow?
Expect a first harvest about 50–60 days from sowing under good conditions. A long-lived cut-and-come-again green you harvest leaf-by-leaf from the outside for months.
Can I grow Swiss Chard without a sunny window?
Yes. Swiss Chard does well under an affordable clip-on grow light, so a bright window isn't essential.
How big does Swiss Chard get?
An upright leafy plant ~0.3–0.4 m tall; grow a few and pick outer leaves.
How do I propagate Swiss Chard?
Sow the knobbly seed clusters directly, then thin the multiple seedlings that emerge.
What pests affect Swiss Chard?
Watch for leaf miners, aphids and flea beetles. Check new growth and the undersides of leaves often, and treat early with a rinse or insecticidal soap before they spread.
Is Swiss Chard easy to grow?
Yes. Swiss Chard is forgiving and one of the better plants to learn on.
Gear for Swiss Chard
Gear suggestions to get you started — general picks, not paid placements.
Pet-toxicity from the ASPCA. Care details are general guidance, not professional or veterinary advice; only eat plants you can positively identify as the edible plant and part described. Photo: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons (CC-BY-SA). Care info last updated 2026-06-02.