Succession Sowing Techniques for Summer Lettuce, Radishes, and Peas
Keep your harvest going all summer by staggering plantings. Sow lettuce every two weeks, radishes every 10 to 14 days, and peas in early July. This method prevents bolting, reduces waste, and takes advantage of cooling fall weather for a steady supply of fresh greens and vegetables.
What you need
- Loose-leaf or cut-and-come-again lettuce seeds
- Radish seeds
- Pea seeds
Steps
- Start sowing lettuce in spring after your last frost date. Continue planting every two weeks through early summer. Pause during the peak heat of mid-summer, then resume sowing in late August to catch the fall harvest. Stick to loose-leaf or cut-and-come-again varieties, as they handle succession planting better than head lettuces.
- Sow radish seeds in small batches every 10 to 14 days. Begin in early spring and continue through late spring. Skip the summer months in most areas due to heat, but if you are in a cooler climate, you can try sowing again in late July. Resume regular planting in late summer for a fall crop.
- Sow pea seeds in early July. This timing allows the plants to mature during the cooler late summer and early fall weather, resulting in a harvest by mid-September. This method works well because peas prefer cooler temperatures and thrive as the heat of summer fades.
Why it works
Why succession sowing works
Succession sowing prevents bolting in lettuce and ensures a steady supply of tender greens rather than a single large harvest that might go to waste. For radishes, frequent small sowings maintain quality and prevent over-maturity. Peas planted in July take advantage of the natural cooling trend in late summer, allowing them to grow vigorously without stressing from heat.
Addressing mixed advice
There is some disagreement on exact timing. Some sources suggest sowing lettuce weekly in summer, while others recommend a two-week interval until mid-August. Similarly, while most advise skipping summer radishes, cooler climates may allow for late July plantings. For peas, July planting is recommended for a September harvest, though not all sources mention this specific window.
Related on Gardeners Bible: How to Prune Summer-Bearing Red Raspberries, How to Prepare a No-Dig Garden Bed for Early Summer Vegetables, How to Plant Garlic This Fall for a Big Summer Harvest, How to Divide Perennials in October.
If it goes wrong
Lettuce bolting too early
If your lettuce bolts before harvest, you may have sowed too late in the season or chosen a variety unsuited for heat. Switch to loose-leaf types and stop sowing before the peak summer heat.
Radishes becoming woody
Overcrowding or waiting too long between sowings can lead to poor quality. Ensure you are planting small batches every 10 to 14 days to keep roots tender.
Peas failing to thrive
If peas struggle in July, it may be too hot in your region. This technique relies on cooling fall weather; if summer remains warm, wait until August for better results.
