Why Succession Sowing Beats One Big Planting
The classic beginner mistake is sowing a whole packet of lettuce on the same April weekend. Six weeks later you have thirty heads maturing at once, you eat what you can, the rest bolt bitter in the heat, and then you have nothing for a month. Succession planting fixes this by sowing a small batch on a fixed rhythm, every 7 to 14 days, so a fresh wave is always coming up behind the one you are eating. The result is a steady trickle of crisp heads instead of a feast-then-famine cycle.
How We Size Each Batch
The math starts with how much salad your household actually eats. A loose-leaf or cut-and-come-again plant supplies roughly half a salad-serving per harvest visit, while a full butterhead or romaine head equals about one serving. We convert your weekly demand into a daily rate, then multiply by your chosen sow interval so each batch covers exactly the days until the next one matures.
Plants per batch = ceil( people x salads/week x heads/salad / 7 x sow interval )
Choosing Your Interval
A reliable rule of thumb is to set your sow interval at roughly one-quarter to one-half of the crop\'s days-to-maturity. Loose-leaf lettuce matures in about 45 to 55 days, so sowing every 10 to 14 days keeps a smooth rolling supply. Fast baby mesclun is ready in 25 to 35 days and rewards an even tighter 7-day cadence. Crisphead types take 70 to 80 days and need a wider interval, but they hold longer in the garden once mature. Spacing matters too: loose-leaf wants about 9 inches between plants, romaine 10, and iceberg a full 12, which is why each batch claims a predictable length of bed row.
Frequently Asked Questions
How often should I succession-sow lettuce?
For most loose-leaf and butterhead varieties, sowing a small batch every 10 to 14 days keeps salads coming without gaps. Fast-growing baby greens can be sown every 7 days, while slower crispheads can stretch to every 18 to 21 days. A good guideline is to sow again as soon as the previous batch has germinated and put out its first true leaves.
How many lettuce plants do I need per person?
It depends on how often you eat salad and which type you grow. A person eating four salads a week from full heads needs roughly four heads per week, but loose-leaf and cut-and-come-again types stretch much further because you harvest outer leaves repeatedly. This calculator works it out from your exact household and salad habits rather than a one-size guess.
When should I stop succession sowing for the season?
Stop your spring sowings once daytime highs consistently push past 80 F, since lettuce bolts and turns bitter in heat. Resume in late summer, counting back the days-to-maturity from your first expected frost so the final batch matures in the cool weather lettuce loves. In mild-winter regions you can keep sowing heat-tolerant varieties almost year round.
Can I succession plant in containers or a small raised bed?
Absolutely, and lettuce is one of the best crops for it because of its shallow roots and quick turnaround. Use the bed-space-per-batch figure to see how much row each sowing needs, then rotate fresh batches into containers as you harvest finished ones. A single 4-foot raised bed can support a rolling salad supply for a couple of people all season.
Practical Guide for Lettuce Succession Planting Calculator
The single biggest upgrade to a succession schedule is tying it to a calendar reminder rather than a vibe. Pick a fixed day, say every other Sunday, and sow your calculated batch whether or not the previous one looks ready. Lettuce germinates in cool soil within a week, and a few minutes of consistent sowing prevents the dreaded month-long salad drought that derails most first-year plans.
Match your variety choices to the season, not just your taste. Spring and fall favor tender butterheads and loose-leaf types, while early summer calls for heat-tolerant, slow-bolting varieties like Jericho romaine or Muir. Start late-summer batches in trays in a cooler, shadier spot, because lettuce seed actually goes dormant above about 80 F and refuses to germinate in hot soil. Transplanting cool-started seedlings sidesteps that problem entirely.
Treat cut-and-come-again loose-leaf lettuce as a multiplier on your plan. Instead of harvesting whole plants, snip the outer leaves an inch above the crown and the plant regrows two or three more times over several weeks. This effectively stretches each batch, which is why this calculator counts loose-leaf as half a serving per plant per harvest, you simply visit the same plants more often before they finally tire out.
Quick Checklist
- Set a recurring calendar reminder on your chosen sow day so no batch gets skipped.
- Start summer batches in trays in a cool, shaded spot to dodge heat dormancy.
- Harvest loose-leaf types as outer leaves so each plant regrows two or three times.
- Switch to bolt-resistant varieties as temperatures climb past 75 F.