🔁🌱 When to Succession Sow for Non-Stop Crops
🌱 Introduction: How Succession Sowing Keeps Harvests Coming
Succession sowing is the secret to continuous harvests instead of gluts followed by gaps. Rather than sowing everything at once, you sow small amounts at regular intervals, so new plants are always coming on as older ones finish.
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So, when should you succession sow for non-stop crops in the UK?
The answer depends on crop speed, season, and day length—not fixed dates.
This guide explains exact sowing intervals, crop-by-crop timing, and when to stop for reliable, ongoing harvests.
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⏳ The Golden Rule of Succession Sowing
✅ Sow little and often
❌ Don’t sow all at once
Most non-stop crops are succession sown every 2–4 weeks, adjusted for temperature and daylight.
- Spring & autumn: slower growth → longer gaps
- Summer: faster growth → shorter gaps
📅 Best Succession Sowing Intervals (UK)
🥬 Salad Leaves & Cut-and-Come-Again Greens
Interval: Every 2–3 weeks
Includes:
- Lettuce (leaf types)
- Mixed salad leaves
- Rocket
- Mustard greens
Why it works: Fast growth, short harvest window, easy to replace.
When to start: March (under cover) / April (outdoors)
When to stop: Late August outdoors (later under cover)
🥕 Radishes
Interval: Every 2 weeks
Radishes go woody fast, so tight spacing between sowings is key.
When to start: March (under cover)
When to stop: Early September
Hot weather speeds growth—shorten intervals in summer.
🧅 Spring Onions
Interval: Every 3–4 weeks
When to start: March
When to stop: Late July–early August
Later sowings still work, but growth slows in autumn.
🥬 Spinach
Interval: Every 3–4 weeks
- Spring sowings grow quickly
- Summer sowings need shade
- Autumn sowings grow slowly but last longer
When to start: March
When to stop: August (September under cover)
🌿 Pak Choi & Asian Greens
Interval: Every 3 weeks
Best sown from late summer onwards to avoid bolting.
When to start: July
When to stop: Early September (later under cover)
🥕 Beetroot (for Baby Roots)
Interval: Every 3–4 weeks
Harvest young for tenderness and speed.
When to start: April
When to stop: Late July
Later sowings often stall before full size.
🌱 Dwarf French Beans
Interval: Every 3–4 weeks
Only succession sow in warm soil.
When to start: Late May
When to stop: Early July
Later sowings risk not cropping before autumn.
🌡️ Adjust Intervals by Season
Spring
- Growth is slow
- Use longer gaps between sowings
Summer
- Growth is fast
- Use shorter gaps
- Water well to prevent stress
Autumn
- Growth slows again
- Final sowings should be earlier than you think
🚫 When Succession Sowing Doesn’t Work
Avoid succession sowing for:
- Parsnips
- Maincrop carrots (beyond early summer)
- Sweetcorn
- Pumpkins & squash
These need long, uninterrupted seasons.
🛠️ Smart Succession Sowing Tips
- Use modules for later sowings to save time
- Label each sowing date to track performance
- Replace crops immediately after harvest
- Switch crops late season if time runs out
- Protect late sowings with fleece or cover
Succession sowing works best when it’s planned into your layout.
⏹️ When to Stop Succession Sowing
In the UK:
- Most outdoor succession sowing should stop by late August
- Some leafy crops continue into early September
- After that, day length limits growth
Late sowings are for survival, not speed.
🧠 Key Takeaway
Succession sowing keeps your vegetable garden productive by matching sowing intervals to crop speed and season. For most fast crops, sow every 2–4 weeks, shorten gaps in summer, and stop earlier than you think as autumn approaches.
Non-stop harvests don’t come from more space—they come from better timing.