Your September strawberry bed: who belongs beside it, who doesn't
Young strawberry plants leave plenty of room between the rows in September. Fill that space wisely now and you'll save yourself a spring reshuffle — and you'll know which two neighbours are off the table entirely.
Strawberries set out in August or September are sitting small and far apart right now. It looks like wasted space — and that’s exactly what it is if you leave the gaps empty until spring. The catch: not every neighbour does strawberries any good, and not every good neighbour can still be sown in mid-September.
Why neighbours matter right now
If you planted your strawberries in August or early September, they’re sitting there as small rosettes with plenty of air between them. Those gaps close within a few weeks in spring — and by then every decision about neighbours has been made for you, whether you meant it or not.
September is the short window where you can still fill the bed on purpose. Whatever goes in now grows into the season alongside your strawberries. Whatever you skip can only be fixed later by moving plants — and moving them costs half a year of head start.
Garlic: the classic pairing, just not yet
Garlic is listed as a good strawberry neighbour, and the pairing works both ways. Alliums have a reputation for keeping fungal pressure down in a strawberry bed — the evidence is thinner than some garden books suggest, but the combination certainly does no harm, and the spacing fits beautifully.
The timing, though: garlic goes in during October and November, or into early winter in mild spots. After that the next window isn’t until March. Right now the soil is still too warm and the cloves sprout too early. What you can do today is keep the rows clear. Plan on about 10 centimetres between cloves and run a garlic row along the edge of the bed, or between every second row of strawberries.
Corn salad and spinach: the gap-fillers for right now
Both are listed as good strawberry neighbours, and both can still be direct-sown in September. Corn salad and spinach stay low, root shallowly and take neither light nor deep moisture away from your strawberries.
Sow them about 10 centimetres apart in the spaces between the rows. Both are frost-hardy and give you something to pick over winter while the strawberries rest. The one thing that matters is the exit: clear those rows in spring, before the strawberries take off and push their leaves over the top.
These two don’t belong beside them
Cabbage and potatoes — both are flagged as poor strawberry neighbours, and for two completely different reasons.
Brassicas are heavy feeders with sprawling leaves. Kale, Brussels sprouts and white cabbage each need 50 to 60 centimetres of room and will shade a low strawberry rosette without mercy. Two hungry plants on the same patch of soil: the smaller one always loses.
With potatoes the problem is the soil itself. Potatoes and strawberries are both susceptible to the same soil-borne wilt, verticillium, and the pathogen persists in the ground for years. So this isn’t only a ‘not side by side’ rule — it’s a ‘not straight after each other’ rule too. A strawberry bed on a freshly cleared potato patch is a poor plan.
The myth: companion flowers always work
Calendula and borage really are good strawberry companions — one has a reputation for being good for the soil, the other pulls in pollinators. The trouble is that this tip usually gets passed along without a date attached, and that’s where it goes wrong.
Calendula is direct-sown from March to July, borage from April to July. Put either in the ground in mid-September and you’ll get no germination at all, or seedlings that won’t survive the first frost — neither plant is frost-hardy. A good companion plant simply isn’t a good idea year-round; it has a time window like every other plant.
So note calendula and borage down for spring instead of burning seed now. In next May’s strawberry bed they’ll be exactly right.
How to plan it in two minutes
Open your strawberry bed in the bed editor and tap one strawberry plant: Rootivo draws green lines to the neighbours that suit it and red ones to those that don’t, right there in the bed. You can see at a glance whether the row you’re about to add actually belongs.
And if you enter the corn salad or spinach straight away, the harvest lands in the year calendar automatically — so come March you’ll know exactly when those rows need to be clear.
Im Lexikon: Erdbeere