Chard (also known as Swiss chard or leaf beet) is one of the most versatile and colourful crops you can grow on an allotment. Easy to cultivate, highly productive, and able to withstand cooler weather, it’s ideal for beginners and experienced growers alike. Whether you choose vibrant rainbow varieties or traditional green leaves, chard provides fresh greens from spring right through to winter.
Quick Facts
| Metric | Details |
|---|---|
| When to Sow | March to August |
| Germination Time | 7–14 days |
| Time to Harvest | 8–10 weeks |
| Ideal Soil | Fertile, well-drained, moisture-retentive |
| Position | Full sun or partial shade |
| Spacing | 30cm apart, 45cm between rows |
Preparing the Soil
Chard thrives in rich, moisture-retentive soil. Dig over the bed in early spring and incorporate plenty of garden compost or well-rotted manure.
Avoid very acidic soils — a pH between 6.5 and 7.5 is ideal.
Choose a sunny or lightly shaded spot, especially for summer crops where shade helps prevent bolting.
Sowing the Seeds
Sow chard seeds directly into the ground from March to August.
Create shallow drills 2cm deep and 45cm apart. Sow seeds thinly and cover lightly with soil. Water well.
Each seed cluster can produce several seedlings, so thin them to about 30cm apart once large enough to handle.
For earlier crops, sow in modules indoors in February and transplant when the soil warms.
Watering and Feeding
Keep the soil evenly moist, especially during dry spells. Water at the base rather than overhead to reduce disease risk.
Mulch around plants with compost or straw to retain moisture.
Chard is a hungry crop — feed monthly with a general-purpose liquid fertiliser to encourage leafy growth.
Maintenance and Care
Regularly remove damaged or yellowing leaves to keep plants healthy.
To prevent bolting in hot weather, ensure consistent watering and provide some shade if possible.
Chard is hardy and can survive mild frosts — in cold months, protect with fleece for continuous picking.
Harvesting
Start harvesting leaves when they reach around 20–30cm tall, usually 8–10 weeks after sowing.
Pick outer leaves regularly, leaving the centre intact for ongoing growth.
You can harvest young leaves for salads or larger leaves for cooking, similar to spinach.
Well-cared-for plants can keep producing for over a year if cut-and-come-again harvesting is used.
Common Problems and Solutions
| Problem | Cause | Solution |
|---|---|---|
| Bolting (premature flowering) | Hot, dry weather | Water consistently, sow bolt-resistant varieties |
| Leaf miners | Insects tunnelling into leaves | Remove affected leaves, use fine mesh covers |
| Slugs and snails | Feeding on young plants | Protect with organic pellets or barriers |
| Yellowing leaves | Nutrient deficiency | Feed with nitrogen-rich fertiliser |
Companion Planting Tips
Chard grows well alongside onions, beans, and brassicas.
Avoid placing it near potatoes, which compete for nutrients.
It also makes an excellent follow-up crop after early peas or broad beans thanks to its minimal soil demands.
Using the Allotment Planner Tool
Add your chard rows to the Allotment Planner tool to visualise spacing, crop rotation, and harvesting cycles.
You can group it with similar leafy greens like spinach or beetroot to make the most of your plot layout.
FAQs
When should I sow chard?
From March through August for harvests from early summer to winter.
Can chard survive frost?
Yes — mature plants tolerate light frost and can be protected with fleece for extended cropping.
How long does chard take to grow?
Around 8–10 weeks from sowing to first harvest.
Should I cut the whole plant or just leaves?
Pick outer leaves regularly — the plant will continue producing new growth.
What are the best chard varieties to grow?
‘Bright Lights’ for colourful stems, ‘Lucullus’ for high yields, and ‘Fordhook Giant’ for winter hardiness.