Working with the weather, not against it

British summers can turn a tidy allotment into something closer to a bog in the space of a week. If your plot is small, the effects of a wet spell feel magnified: paths become slippery, beds waterlog, and seedlings sulk. The good news is that a compact plot is also easier to manage when the rain sets in. It is quicker to dig a drainage channel along a short bed than across an acre, and easier to cover a few square metres with cloches or fleece.

The trick is to stop treating wet weather as a pause and start treating it as a different set of growing conditions. Once you accept that, you can plan for it, and you will still be harvesting something worthwhile in November when everyone else has given up.

Raise your beds and take care of the soil

Waterlogging is the enemy of most vegetable roots, and on a small plot you will feel it everywhere at once. Raised beds are the single most useful investment you can make. Aim for around 20cm of depth above the surrounding ground level, and mix in plenty of well-rotted manure or garden compost so the structure stays open. On heavy clay, add grit as well; a 5cm layer dug through the top spit makes a noticeable difference within a season.

• Never walk on saturated beds. Keep a plank or two beside the plot and stand on those when you need to reach across.
• Top-dress bare soil with compost or a mulch of leafmould to stop rain compacting the surface.
• Open up drainage channels along the lowest edge of the plot, and clear any blocked gullies, soakaways or water butts before the next front arrives.
• If one corner floods consistently, stop fighting it. Use it for a small pond, a bog garden for wildlife, or leave it to nettles and wildflowers.
• For genuinely waterlogged spots, grow in large containers or deep pots on a paved path or hardstanding instead.

Keep slugs and snails in check

Damp weather is slug weather, and on a small plot there is nowhere for tender seedlings to hide. The most reliable approach is a combination of methods rather than one miracle cure.

• Night patrols. Go out with a torch after dark and pick slugs off by hand. Ten minutes, twice a week, removes a surprising number.
• Barriers. Copper tape around pots, and rough mulches of sharp grit or crushed eggshell around young plants, all help. Refresh grit after heavy rain.
• Traps. Sink a small pot of beer or milk at soil level near vulnerable crops, empty it every couple of days.
• Biological controls. Nematode drench is effective in moist soil, which is exactly what you have in a wet spell. Follow the soil temperature guidance on the packet.
• Encourage predators. Frogs, toads, ground beetles, slow worms and thrushes all eat slugs. A small log pile, a stone heap and a shallow wildlife pond pay for themselves many times over.

Plant out sturdy, well-grown transplants rather than delicate seedlings, and keep a few spares in pots as insurance. If a row disappears overnight, you have replacements ready.

Choose crops that enjoy cool, damp conditions

Rather than coaxing Mediterranean crops through a wet August, lean into what actually thrives. These are the stalwarts of a damp plot:

• Leafy brassicas: kale, cavolo nero, winter cabbage, purple sprouting broccoli and Brussels sprouts all shrug off rain and a bit of cold.
• Oriental greens: mizuna, mustard, pak choi and tatsoi germinate fast in moist soil and give you cut-and-come-again salads into autumn.
• Chard and spinach: productive for months, and happier in damp soil than most salad leaves.
• Leeks, onions and garlic: plant autumn sets and cloves in well-drained ground for a head start next year.
• Broad beans and early peas: sown in autumn or late winter, they root well in cool, moist soil.
• Roots that tolerate moisture: beetroot, radish and turnips do better than carrots in heavy going.

Avoid anything that hates wet feet — aubergines, most peppers, and many Mediterranean herbs will struggle unless you grow them in pots under cover.

Protect young plants and stretch the season

On a small plot, a little protection goes a long way. A cloche, a low polytunnel or even a cold frame made from an old window will keep the worst of the rain off seedlings and raise soil temperatures enough to speed growth. Ventilate on mild days to prevent mould, and water sparingly under cover even when it is pouring outside, because rain does not reach the roots.

Fleece is your friend in wet, windy spells. It shields tender leaves from battering, keeps pigeons and cabbage white butterflies off, and adds a few degrees of warmth. Secure it well; wet fleece flaps and tears.

Make the most of every dry hour

When a brighter day arrives, get out and use it. Sow quick crops such as rocket, land cress and winter purslane. Earth up leeks and brassicas for stability. Harvest anything that is ready, because roots left in sodden ground can rot. Hoe weeds on the surface rather than digging, which does more harm than good in wet soil.

Finally, keep a notebook. Note which beds flood, which crops coped and which disappeared to slugs. Small plots reward this kind of attention, and after a couple of seasons you will have a plan tailored precisely to your patch — rain and all.