Strawberries are the crop most new gardeners get wrong, and it is rarely for lack of effort. They are cheap to buy, easy to plant, and they will survive almost anything. Surviving and cropping well are different things.
Most disappointing strawberry beds come down to the same handful of errors, and nearly all of them are fixable in an afternoon. Here is what actually goes wrong.
Planting the crown at the wrong depth
This one kills more strawberry plants than every pest combined, and it is the first thing to check if yours are struggling.
The crown is the thickened stub where the leaves emerge from the roots. It needs to sit exactly at soil level. Bury it and it rots within weeks. Leave it proud and the roots dry out and the plant sulks all season.
Spread the roots downward in the hole rather than bunching them, backfill, then check by eye from the side. You want the base of the leaves clear of soil and the top of the roots just covered. If you plant in autumn, check again after the first hard frost, because heaving can lift crowns out of the ground.
Not knowing which type you bought
There are three, they behave completely differently, and the label often does not say. If you only fix one thing on this list, fix this one.
- June-bearing: one heavy crop over two to three weeks in early summer. Sends out lots of runners. Best for freezing and jam because everything arrives at once.
- Everbearing: two smaller crops, roughly early summer and early autumn. Fewer runners.
- Day-neutral: fruits steadily from summer to first frost as long as temperatures stay below about 30C. Fewest runners. Best choice for containers and small beds.
Nearly every piece of strawberry advice you will read applies to only one of these. Pinching blossoms, renovating after harvest, managing runners: all of it changes depending on which you have. Work out what you are growing before you follow anyone’s instructions, including these.
Letting first-year plants fruit
This feels wrong and it is the single best thing you can do for next year’s crop.
On June-bearing plants, pinch off every flower in the first season. The plant puts that energy into roots and crown instead, and year two is dramatically better. On day-neutral and everbearing types, pinch flowers until about midsummer, then let them crop.
It is hard to do. Do it anyway. A first-year June-bearer allowed to fruit gives you a handful of small berries and a weak plant. Pinched, it gives you a proper crop twelve months later.
Letting runners do whatever they like
A vigorous June-bearer will throw runners in every direction and happily turn a tidy bed into a dense mat of small, overcrowded, poorly-fruiting plants.
Pick a system and stick to it:
- Matted row: let runners root but thin them to roughly one plant every 15 to 20 cm. Higher total yield, smaller berries, less work.
- Hill system: remove every runner as it appears and grow each plant as an isolated clump. Fewer berries, noticeably larger, and much easier to pick and keep clean. This is the better choice for day-neutral types and for anyone short on space.
Doing neither, which is what most people do, gives you the worst of both.
Watering over the top of the plants
Strawberries sit low, their leaves stay damp, and their fruit touches the ground. That is close to ideal conditions for grey mould (Botrytis), which turns ripening berries into fuzzy grey mush, often overnight.
Water at the base, in the morning, and let the foliage dry before evening. Drip line or a can with the rose removed, aimed at the soil. Our guide to watering efficiently through summer covers the general principle, and it matters more for strawberries than for almost anything else you grow.
Skipping the straw
The clue is in the name. Straw mulch does three jobs at once: it keeps fruit off wet soil, it stops rain splashing soil-borne spores onto the berries, and it holds moisture in a plant with an annoyingly shallow root system.
Put it down once the plants are flowering and the fruit is starting to form, not before. Wheat or barley straw, not hay, which carries weed seed. A few centimetres is plenty. If you would rather use something living, a low ground cover can work, though straw remains simpler for a dedicated strawberry bed.
Feeding for leaves instead of fruit
A general-purpose or lawn-type feed, high in nitrogen, gives you a magnificent leafy plant and almost no berries. Strawberries want potassium once they start flowering.
Comfrey liquid feed is close to perfect here and costs nothing if you grow the plant. It is naturally high in potassium and it is exactly what fruiting crops want at flowering time. We cover how to make and dilute it in our guide to using comfrey in the garden.
Feed at flowering and again mid-crop. Stop feeding after the final harvest so the plants harden off before winter.
Never renovating after harvest
This applies to June-bearing plants only, and skipping it is why so many beds fade after year two.
Within a couple of weeks of the last berry, shear the foliage off about 3 cm above the crowns. Take care not to cut into the crowns themselves. Rake out the old leaves, thin the plants, narrow the rows back to about 30 cm wide, and top up with compost.
It looks brutal. The bed regrows within weeks, and it removes a season’s worth of accumulated leaf spot and mite pressure in one pass.
Keeping the same bed too long
Strawberry plants are productive for three years, sometimes four. After that yields fall away and disease builds in the soil regardless of how well you look after them.
The practical answer is a rolling replacement. Every year, root a few runners into pots to start a new bed elsewhere, and retire the oldest bed. That way you always have plants in their productive years rather than replacing everything at once and losing a season.
Planting where tomatoes or potatoes grew
Strawberries share a soil-borne enemy with the nightshade family: Verticillium wilt. It persists in soil for years and there is no cure once plants are infected.
Avoid ground that has grown tomatoes, potatoes, peppers, aubergines or melons within the last three or four years. Wilt shows up as older leaves yellowing and collapsing while the newest growth still looks healthy, usually just as fruiting begins.
While you are planning the bed, it is worth thinking about neighbours as well. The principles in our companion planting guide apply here: borage and alliums are traditional strawberry companions, brassicas are not.
Leaving the crop to the birds
Blackbirds and thrushes know precisely when a strawberry is one day from perfect, and they will take it then.
Net the bed properly before the first berry starts to colour. Use fine mesh held clear of the plants on hoops rather than draped over them, and check it regularly, because loose netting traps birds and hedgehogs.
Slugs are the other reliable thief, arriving from underneath while the birds work from above. Straw mulch helps by keeping fruit off damp ground. If you would rather not reach for pellets, several of the recipes in our DIY garden sprays post handle the wider pest picture.
A short word on sunlight
Strawberries want six to eight hours of direct sun for the sugars to develop properly. They will grow in less, but the fruit stays tart and the plants become far more prone to mildew.
If your only available spot is partly shaded, it is not hopeless, but it does change which varieties are worth your time. We go into that in more detail in can strawberries grow in shade.
If you fix only three things
Get the crown depth right, work out which type you are growing, and pinch the first year’s flowers on June-bearers. Those three account for most of the difference between a bed that limps along and one that genuinely produces.
The rest is refinement, and refinement is a great deal more enjoyable when the basics are already working. Healthy soil underpins all of it, and our guide to building healthy soil without chemicals is a sensible next read if you are starting a new bed this season.