What to Grow After an Early Crop Has Finished
When an early crop is harvested, the space it occupied can often produce another crop before the growing season ends. Replanting these gaps is sometimes called succession growing, follow-on cropping or double cropping.
Early potatoes, peas, broad beans, garlic, onions, radishes, salads and early brassicas can all leave useful spaces during summer. What grows next should be chosen according to the time remaining, the condition of the soil and the needs of the previous and following crops.
The What to Grow Next suggestions in Your Growing Companion can help identify suitable options for a harvested space.
Start with the Time Remaining
Before selecting another crop, estimate how much useful growing time remains.
Consider:
The expected first-frost date
The number of weeks of good daylight remaining
Current soil temperature
Typical autumn temperatures
Whether the bed is sheltered or exposed
Whether cloches, fleece or other protection are available
The crop’s likely time to maturity
Whether it can be harvested young
Days to maturity printed on a seed packet are usually based on favourable conditions. Crops sown in late summer may grow more slowly as days shorten, so allow additional time.
In colder climates, the best choice may be a fast salad or a crop intended to overwinter. In warmer regions, there may be time for larger roots, brassicas or several successive sowings.
Assess the Bed Before Replanting
Once the previous crop has been removed, inspect the growing space rather than automatically sowing something new.
Check for:
Persistent weeds
Compacted or damaged soil
Dryness beneath the surface
Waterlogging or poor drainage
Signs of pests
Diseased roots or plant debris
Low soil levels
Areas disturbed during harvesting
Remove perennial weeds and deal with diseased material appropriately. Healthy crop remains can usually be composted or chopped and used as surface mulch.
If the soil is in good condition, avoid unnecessary digging. Clear the surface, apply mature compost if needed and prepare only the sowing row or planting hole.
Consider What Grew There Before
The previous crop affects what the bed may need next.
A hungry crop such as courgettes, squash or brassicas may have used a considerable amount of available nutrition. A follow-on crop could benefit from mature compost or another suitable soil amendment.
Peas and beans form a relationship with nitrogen-fixing bacteria, but this does not mean the bed contains unlimited nitrogen after harvest. Much of the nitrogen is held within the plants and harvested seeds. Leaving healthy roots in the ground allows them to decompose without disturbing the soil structure.
Early potatoes often leave relatively loose soil that is easy to prepare for direct sowing. However, harvesting may dry or disturb the ground, so level the surface and water thoroughly before sowing.
After onions or garlic, remove any diseased material carefully. Where white rot or another soil-borne disease has occurred, avoid planting another susceptible allium crop in that space.
Follow Early Potatoes with Fast Crops
Early potatoes are often harvested while a useful part of the growing season remains.
Possible follow-on crops include:
Lettuce
Rocket
Spinach
Radishes
Turnips
Beetroot for baby roots
Spring onions
Pak choi
Mizuna
Mustard greens
Peas for shoots
Green manures
After lifting the potatoes, check carefully for any tubers left in the ground. Level the disturbed soil and add mature compost if its condition suggests this is needed.
If the weather is hot and dry, water the bed deeply before sowing. Recently disturbed soil can lose moisture quickly.
Follow Peas or Broad Beans with Leafy Crops
Once peas or broad beans have finished, cut the plants at ground level if they are healthy. Leave the roots to decompose naturally and compost the top growth.
The space may then be suitable for:
Kale
Chard
Spinach
Lettuce
Oriental greens
Autumn cabbage transplants
Kohlrabi
Rocket
Winter salads
The remaining supports may be reused temporarily for climbing beans or peas if the climate and season allow. Otherwise, clean and store them before autumn weather causes damage.
If the legumes suffered from disease, remove affected material and avoid relying on the crop remains as mulch.
Follow Garlic or Onions with Autumn Crops
Garlic and overwintered onions can be harvested early enough to leave a substantial growing period.
Suitable follow-on choices may include:
Beetroot
Carrots
Turnips
Radishes
Lettuce
Spinach
Chard
Pak choi
Mizuna
Spring onions
Green manure
Avoid immediately growing another onion-family crop where pest or disease problems have occurred.
Garlic and onions have relatively shallow root systems, so the lower soil may retain useful moisture. Nevertheless, their beds can become dry and hard during summer. Water before sowing and create a fine surface for small seeds.
Follow Early Salads and Radishes
Early lettuces, rocket, spinach and radishes usually leave small gaps rather than an entire empty bed.
These spaces can be filled with:
More salad leaves
Spring onions
Beetroot
Chard
Kale transplants
Kohlrabi
Dwarf beans where enough warm weather remains
Autumn herbs
Young brassicas raised in modules
This form of gap planting keeps the bed productive without clearing everything at once.
Make sure established crops will not shade or overwhelm the new plants. Root competition can also be significant, particularly in dry weather.
Follow Early Brassicas Carefully
Once early cabbage, broccoli, cauliflower or kohlrabi has been harvested, the bed may be available for another crop.
Suitable choices include:
Lettuce
Spinach
Chard
Beetroot
Carrots
Spring onions
Peas for shoots
Green manures that do not belong to the brassica family
Avoid following one brassica immediately with another if there has been clubroot, cabbage root fly or another persistent brassica problem.
Mustard is commonly used as a green manure, but it is also a brassica. It may therefore be unsuitable unsuitable for beds where crop rotation or brassica disease management is important.
Remove thick brassica stems and inspect roots for swelling, decay or pest damage before deciding how to use the bed.
Crops for a Short Growing Window
When only a few weeks of favourable conditions remain, choose vegetables that can be harvested young.
Useful options include:
Radishes
Rocket
Baby lettuce
Mustard greens
Mizuna
Spinach
Pea shoots
Baby turnips
Beet leaves
Microgreens grown under suitable conditions
A crop does not need to reach its maximum size to be worthwhile. Young leaves and baby roots can provide a useful harvest from a short window.
Sow small quantities so that the crop can be used while it remains at its best.
Crops for a Longer Autumn
Where autumns are mild or protection is available, the range of possibilities becomes wider.
Depending on the sowing date, suitable crops may include:
Beetroot
Carrots
Turnips
Kohlrabi
Chard
Kale
Autumn cabbage
Chinese cabbage
Pak choi
Florence fennel
Dwarf beans
Peas
Coriander
Parsley
Variety choice is important. Look for descriptions such as fast-maturing, autumn, winter-hardy, bolt-resistant or suitable for overwintering.
The Sowing Calendar in Your Growing Companion can help determine which crops remain suitable for sowing under local conditions.
Transplants Can Save Valuable Time
Raising seedlings in modules while the previous crop is still growing can shorten the gap between harvests.
Once the bed becomes available, established seedlings can be planted immediately. This approach works well for:
Lettuce
Chard
Kale
Kohlrabi
Pak choi
Tatsoi
Autumn cabbage
Spring onions
Transplants need careful watering while they establish, particularly when planted during hot weather. Temporary shade may reduce stress.
Do not allow module-grown plants to become root-bound. Overcrowded or nutrient-starved seedlings may take too long to recover after planting.
Remember Crop Families
Succession growing is not the same as long-term crop rotation, but crop families should still influence the decision.
Avoid repeatedly growing the same family in one space where this could increase pest or disease pressure.
Common vegetable families include:
Brassicas: cabbage, kale, broccoli, cauliflower, radish, turnip, kohlrabi and mustard
Legumes: peas, beans and broad beans
Alliums: onions, garlic, leeks and spring onions
Cucurbits: courgettes, squash, pumpkins, cucumbers and melons
Nightshades: tomatoes, potatoes, peppers and aubergines
Beet family: beetroot, chard and spinach
Carrot family: carrots, parsnips, parsley, coriander and fennel
Rotation does not need to become so rigid that useful spaces remain empty. Its purpose is to reduce avoidable problems, not to prevent practical growing.
Feed According to the Next Crop
Do not add fertiliser simply because a bed has become empty. Feed according to the soil condition and the needs of the next crop.
Mature compost is often enough to prepare a bed for leafy vegetables and autumn transplants. Root crops may perform poorly in soil containing excessive fresh manure or high levels of nitrogen.
Avoid using undecomposed manure immediately before sowing. It can damage young roots, encourage uneven growth and make direct sowing difficult.
Where the bed already contains a good layer of organic matter, it may need only watering and light surface preparation.
Maintain Moisture During Establishment
Late-summer succession crops can fail if the seedbed repeatedly dries out.
Before sowing or transplanting:
Water dry soil thoroughly
Allow the water to soak below the surface
Sow during a cooler part of the day
Shade vulnerable seedlings temporarily
Water gently to avoid disturbing seeds
Check modules and containers every day
Mulch around established transplants
As autumn progresses, reduce watering to match cooler temperatures and rainfall. Persistently wet soil can be as damaging as drought.
Protect the Next Crop
A newly planted bed may require protection from pests or weather.
Depending on the crop and location, consider:
Fine insect mesh
Fleece
Cloches
Low tunnels
Bird netting installed safely
Wind protection
Slug and snail controls
Shade during hot weather
Inspect covers regularly. A pest trapped beneath mesh can cause extensive damage, while poorly ventilated protection can create humid conditions that favour disease.
Later in the season, weather forecasts, cold-night warnings and frost alerts in Your Growing Companion can help indicate when extra protection may be necessary.
When Not to Plant Another Vegetable Crop
Replanting is worthwhile only when the next crop has a reasonable chance of success.
It may be better not to sow another vegetable crop when:
The remaining growing season is too short
The soil needs improvement
A serious pest or disease problem has occurred
Water is unavailable for establishment
The bed is needed soon for autumn planting
The space will be difficult to access in winter
There is already more produce than can be used
In these situations, cover the ground rather than leaving it bare.
Options include:
Sowing a suitable green manure
Applying mature compost
Adding an organic mulch
Covering the bed temporarily to suppress weeds
Recording it as resting or fallow
Growing Spaces in Your Growing Companion can be used to record a resting or fallow period until the bed is needed again.
Record What Followed What
Succession planting can make crop records more complicated because several crops may occupy the same bed in one year.
Record:
The crop that was harvested
The harvest date
The follow-on crop
Its sowing or planting date
Any compost or amendments added
Pest or disease problems
The final result
These records help reveal which combinations make effective use of the season and which were planted too late.
The Garden Planner and crop records in Your Growing Companion can keep this sequence connected to the correct growing space.
Make Every Space Earn Its Place
A harvested bed does not have to remain empty until spring. It can provide another crop, support an overwintering vegetable or improve the soil for the following season.
The best follow-on choice is not necessarily the crop with the largest possible harvest. It is the one suited to the time,, climate, soil and level of protection available.
By assessing each space individually and acting promptly after harvest, the garden can remain productive while moving naturally from summer into autumn.
