Guide

Replanting Raised Beds in Late Summer

When early potatoes or onions are harvested, raised beds often develop large empty areas by July or August. Instead of leaving them unused until spring, you can sow follow-up crops and keep harvesting for months.

Published

2026-06-11

Updated

2026-06-11

A wooden raised bed, partly planted with mature potatoes and onions, partly with a succession crop of spinach, lamb's
The raised bed after harvest: Potatoes and onions are ready, and the succession crops are already filling the gaps.

Why follow-up crops are worthwhile

Raised beds often have several productive months remaining after early crops are harvested. Warm soil and favorable growing conditions help many vegetables establish quickly.

  • Better use of available growing space
  • Fresh harvests through autumn and winter
  • Less bare soil
  • Continuous supply of salads and leafy greens

Follow-up crops after potatoes

Early potatoes are often harvested in July, leaving enough time for many autumn and winter crops.

  • Lamb's lettuce
  • Spinach
  • Radishes
  • Asian greens
  • Cut-and-come-again lettuce
  • Rocket
  • Miner's lettuce

Potatoes are heavy feeders. Adding a thin layer of mature compost before sowing can help maintain soil structure.

Follow-up crops after onions

After onions are harvested, the soil is usually loose and easy to work. Many leafy crops establish successfully in these conditions.

  • Lamb's lettuce
  • Spinach
  • Asian greens
  • Radishes
  • Leaf lettuce
  • Endive
  • Hardy herbs

Best crops from July to September

Not every crop is suitable for a late-season start. Fast-growing leafy vegetables and hardy autumn crops are usually the most reliable.

  • Lamb's lettuce for autumn and winter harvests
  • Spinach for autumn harvests and overwintering
  • Asian greens with short growing periods
  • Radishes for quick harvests
  • Rocket for repeated leaf harvests
  • Leaf lettuces for continuous picking
  • Miner's lettuce for cold-season production

Preparing the raised bed

  1. 1

    Remove the previous crop

    Clear potatoes, onions, and all crop residues from the bed.

  2. 2

    Loosen the soil

    Gently loosen the surface layer without disturbing the overall structure.

  3. 3

    Add compost

    Incorporate a thin layer of mature compost if needed.

  4. 4

    Choose suitable crops

    Select follow-up crops based on the remaining growing season.

  5. 5

    Sow and keep moist

    Fresh sowings require consistent moisture during warm late-summer weather.

Late-summer care

Raised beds can dry out quickly in summer. Regular watering is often more important than additional fertilization.

  • Water regularly during dry periods
  • Monitor young seedlings during heat waves
  • Use mulch to retain moisture
  • Thin crowded seedlings when necessary

Common mistakes to avoid

  • Sowing too late and overestimating the remaining season
  • Leaving open areas unused
  • Allowing seeds to dry out during hot weather
  • Following heavy feeders with another demanding crop immediately
  • Leaving crop residues in the bed

Frequently asked questions

What can I grow after potatoes in a raised bed?

Lamb's lettuce, spinach, radishes, Asian greens, rocket, and other fast-growing leafy crops are excellent options.

Can I sow directly after harvesting onions?

Yes. Once residues are removed and the soil is lightly loosened, many autumn crops can be sown immediately.

Which follow-up crop is easiest to grow?

Lamb's lettuce is one of the easiest and most reliable crops for late-summer and autumn sowing.

Wild-Wuchs

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