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IN THIS templet

ONION GUIDES

brown onions with green stems growing in soil in the ground outside next to each other

Companion PlantsHarvestingPreventing BoltingSowing

onion plant are a popular culinary delight and when grown in your garden , you ’ll have the welfare of being able to glean them whenever you wish throughout the summer and autumn calendar month .

Onions have a strong aroma , and this means that they can be a peachy companion works for many different crops and other plants in your garden .

strawberries and onions being grown together in a companion planting scheme

They are said to repel or fuddle a kitchen range of unlike types of pests .

“ Before you get excessively excited about the potential benefit of companion planting , it is important to highlight that most associate works benefit or efficaciousness have not been subject to much or any equal review studies , so we ca n’t say with rank certainty that this plant benefit that plant , ” says Dan Ori , Master Horticulturist .

“ However , we can say that in this clause the companion plant and benefits listed are most likely to be correct based on observation and applied theory . ”

beetroot, onions and carrot plants growing together in a vegetable garden

Onions can be usefully locate :

Perennial types in finical can also be very useful in fruit tree guilds , forest garden and other perennial planting dodge .

Ideally , annual Allium cepa should be part of a craw rotation scheme , so that they are not grown in the same area over multiple years .

onions, tomatoes and beetroots growing in a raised vegetable bed inside a greenhouse

So this should be considered along with companion planting when creating your planting plans .

Due to crop rotation need , it can be utile to suppose about growing onions alongside other alliums ( such as ail and scallion , for example ) .

However , it is important to remember that pests and diseases can conk between them , so it is generally not a safe idea to growonlyalliums in a particular bed or grow area .

onions, mint, basil and other herbs growing in pots on a windowsill

In this guide , we share 25 different plants that make in effect companions for onions , from herb to flowers to other vegetables – there is decidedly an option for everyone .

1) Tomato

Tomatoes are a great way of life to kick off this inclination .

This deciduous fruit is one of the most popular kitchen staple here in the UK and is used in a mountain range of different formula and dishes .

It is also oft get in gardens thanks to how well-fixed they are to institute and care for once established .

flowering onion growing next to some orange flowering common marigolds

Not only are tomatoes a delightin their own right , but they are also slap-up for planting next to onions , as the smell of your alliums can deter pests that might otherwise help themselves to your tomato plants , such as whitefly and moth .

2) Spearmint

Althoughmint has a reputationfor not always being the best companion plant , it grows well with onion , as its scent can help repel onion flies and aphids that are sometimes pull todifferent diverseness of allium .

Also , this full hardy herb produces little purple flowers in the summertime that are great for pull in pollinator and other good insects .

Just be aware that Mentha spicata can sometimes be considered invasive due to its spreading riding habit that can turn over up to 1.5 m wide , but this should not be an issue for your onions once they are established in your vegetable piece .

purple and green lettuce growing next to a row of onions in a vegetable patch

you may always grow your mint in pots nearby if you ’re worried about them spread .

3) Common Marigold

The first blossom on this list , common marigolds are hardy annualsthat bear stunning orange daisy - like efflorescence from May until October that will look bang-up next to the blurred heads of your onion plant crops .

Like Mentha spicata , marigolds are great for pollinator and will help draw beneficial insects towards your alliums if planted closely together .

Marigolds are also loved by slugs , which you might think is a forged thing , but in reality , these slimy puppet will be too busy munch on their leaves to even find your Allium .

rows of onions and parsley growing in a field

4) Common Lettuce

onion do n’t take up much room in a veg darn , which is one of the reasons why they are so popular with UK home growers .

If outer space is a key factor in your decision - making , lettuce might just be the idealistic choicefor you .

Like genus Allium , lettuce takes up most of its space underground , mean it can be plant closely to other root crops to use place and make more way for other plants you might bid to grow .

bell pepper plants in pots ready to be planted out with sprouting onion bulbs and dill

This veggie is comparatively easy to develop , just verify it receives plenty of sunshine throughout the sidereal day , as lettuce thrives in sun .

5) Parsley

onion plant tent flap are notorious pests that banquet on alliums such as onion and ail and can cause stern equipment casualty to these crops.1Onion Maggot . ( 2016 , October ) . Center for Agriculture , Food , and the Environment . Retrieved March 21 , 2023 , fromhttps://ag.umass.edu/vegetable/fact-sheets/onion-maggot

Luckily , parsley is a fragrant herbthat , if planted next to your onions , can discourage these flies and keep them away from your vegetable patches .

Parsley is a small biennial that grows well in most conditions and will also render you with aromatic foliage that can be harvested and used in your kitchen .

yellow flowering rose shrub growing in front of a hedge with purple flowering alliums

6) Bell Pepper

aphid are another pesky pestthat can fertilise on your crop and thebell pepperis one of its favourites .

As remark previously , onion are good at discourage some insects like aphid , so can be establish around your Alexander Bell peppers to act as a barrier of tribute .

This frost - tender fruit produces delectable production and can grow well in similar conditions to onions , ca-ca it suited for companion planting .

small strawberry plants growing in rows with a row of onions growing between them

Be wary that this works will struggle to live once moth-eaten temperatures start to move in over autumn .

7) Rose ‘Yellow Meilove’

You wo n’t find a garden prime that loves being planted next to onions as much as the garden rose .

As well as dissuade pests that can often bear upon the flower of a rose works , onion are also state to improve the aroma of their beautiful blooms and have been planted next to rose for this reason for years.2Garlic Guide . ( n.d . ) . An Herb Society of America Guide . retrieve March 21 , 2023 , fromhttps://www.herbsociety.org/file_download/inline/f751abad-cc5c-414f-89a5-b9e6b012ea70

I ’ve highlighted one of my favourite variety ‘ sensationalistic meilove ’ here , but there are lots of unfussy , full intrepid roses for you to choose from that will grow well with onions .

a huge sea of blue flowering borage growing next to rows of onions and beetroot

8) Alpine Strawberry

strawberry mark are another popular fruitto get with your onions , as they both thrive in the same condition and will grow well together in a sheltered position in full sun .

In fact , strawberry plant can help provide some wraith for your onion ’s roots , which like to be kept nerveless , and in return , your onion can deter yield - loving pesterer from going near your berries .

Alpine strawberries are a lowly multifariousness and are great for work in green goddess with some onion if you wish .

yellow and red flowering nasturtium shrub with stems of onions and dill growing between the flowers and foliage

9) Borage

A hardy plant that will keep onion plant flies forth from your onion , borage is a terrific companion plantfor genus Allium .

Its blueish flush that grow in clusters on farsighted stems in the summer and autumn months look with child amongst the marvellous , downy heads of onion plant plant and will both make a great display throughout the warmer months of the class .

Borage is also a great plant to produce in your garden regardless of its ornamental benefits , as you’re able to use the leaf to make organic fertilisers that can assist in your vegetable ’s growth when apply .

rows of onion and dill plants growing side by side in a huge vegetable field

10) Garden Nasturtium

Nasturtiums are a great fellow plantfor many vegetable as they are brilliant at pull aphid and other likely blighter – keeping them from your prized craw .

They can also be used as a trap plantin a vegetable patch , encouraging slugs and snails to crunch on their leafage rather than that of your onions and other crops .

A frost - tender annual , this bush is well-heeled to arise and willflower throughout the summerand fall , furnish some fiery colour wherever it is plant .

three rows of carrots with frilly leaves sprouting from the ground growing in between rows of onions with long, thin leaves

11) Dill

Anethum graveolens , more usually known as dill , is an yearly herb that enjoys the benefits that being plant next to onion plant can bring , as it can attract aphid and other microbe which onion are neat at getting free of .

However , dill can also aid onion in regaining by means of pest control , as they are in particular good at fighting off red spider speck which can often molest Allium growing in the garden .

Anethum graveolens is also a rattling herb , most often used in Mediterranean dishes , and can be harvested in spring and summertime for usance in your kitchen.3Cornish , R. ( 2022 , September 20).Dill : Everything you need to experience . Good Food . Retrieved March 21 , 2023 , fromhttps://www.smh.com.au/goodfood/everything-you-wanted-to-know-about-dill-20220908-h268tf.html

a chenopodium album plant with clusters of white flowers growing in a field of sprouting onion

“ Anethum graveolens is a really nice plant , ” says Garden Designer Ann - Marie Powell .

“ I eff plants that grow so chop-chop you could almost see them growing in front of your oculus .

“ They sort of explode into these starry flower that get catch in the wind so you could see them move as well . ”

a green melon ‘emir’ plant with large leaves and a round, big fruit growing in a raised bed

12) Carrot

One of my favourite vegetables to arise each twelvemonth , carrots are fully hardy vegetablesthat are wanton to tame , fun to harvest and a pleasure when eat in the buff or cooked .

Onions and carrots are a in particular efficient combination , since the onions will not only help the carrot ( by repelling or confusing cultivated carrot fly ) – the carrot are also said to keep onion plant flies by .

If plant together , just make certain both plants have enough space to produce underground freely so they can reach a suitable size .

spinach, lettuce and onions growing as companion plants in a vegetable patch

13) Bacon Weed

You might be wondering why I ’ve choose a weed as one of my picks on this inclination , but hear me out .

Although I would n’t recommend planting bacon green goddess from seed , as it is a prolific ego - cloud seeder as it is , if this weed is growing in your vegetable eyepatch near your onions , there is no need to panic .

In fact , 1st Baron Verulam weed , also known as common goosefoot , can really help to enrich the soil where alliums grow – provided its bedspread is kept under control .

summer savory plant with tall pale stems and thin green leaves

Bacon sens can even be harvested and eaten and is often used as a replacement for lettuce for those who do n’t want to squander this grass .

So next meter you espy this dope rise near your onions , perchance retrieve twice before getting rid of it completely .

14) Melon ‘Emir’

melon are yield - bearing annualsthat adore Allium cepa for their fragrant scent that helps to discourage pests from their fruits .

For the purpose of this tilt , I ’ve prefer the cultivar ’ emir ’ , which is a tasty cantaloupe cultivar that is in reality better grown under some cover , like a cloche , polytunnel or in a het up greenhouse .

They grow best in as much sun as potential , and onions are great for found by their side as they are improbable to get in the path of the fond light beam this fruit necessitate to develop .

frilly kale plants growing with lettuce and onion plants in sunlit conditions

15) Spinach

As we have lay down , onions are a popular companion plant because their strong scent can help to resist off pests that might pose a trouble for other fruit and vegetables – spinach plant being anotherof the plants that profit .

However , genus Allium are also dandy at land pollinators like ladybird beetle to your garden – beneficial garden predators that might banquet on any pests that manage to make their way into your craw .

Spinach is often provoke by pests , so planting Allium cepa , which also thrive in the same rise conditions asthis leafy veg , is a swell way to naturally gross out any harmful bugs .

African marigolds companion planted alongside tall leafy shoots from onion plants

16) Summer Savory

Planting summer savoury near your onion plant is said to improve the gustatory modality of your craw by making them sweeter , so , if the perceptiveness is your priority , why not try planting this herb?4Tirrell , R. ( 1971 , March 7).Summer savoury . The New York Times . Retrieved March 21 , 2023 , from https://Cornish , R. ( 2022 , September 20 ) . Dill : Everything you demand to know . Good Food . Retrieved March 21 , 2023 , fromhttps://www.smh.com.au/goodfood/everything-you-wanted-to-know-about-dill-20220908-h268tf.html

Grown as an annual , summertime savory has its own culinary US and is a popular substitute for salinity and capsicum or for use in a marinade or meat rub.5Blue , N. ( 2023 , January 30).What Is Savory : All About the Savory Herb and 4 Related Recipes . Recipes.net . retrieve March 21 , 2023 , fromhttps://recipes.net/articles/what-is-savory-herb-and-related-recipes/

This modest herbaceous plant want a site in full sun but is otherwise unfussy and also produces dainty white flowers during the summertime that will lend some semblance to your vegetable bed .

beetroot plants with red stems and green leaves growing between onion plants in a raised garden bed

17) Kale

Kale is a versatile vegetableand can be used in charmer , salad and other culinary smasher – its luscious leavescan be harvested all year round.6Kale . ( 2021 , October 19 ) . The Nutrition reservoir . Retrieved March 21 , 2023 , fromhttps://www.hsph.harvard.edu/nutritionsource/food-features/kale/

However , as a brassica , it is vulnerable to many pests such as Caterpillar and aphids , which is why scratch can gain from the pungent scent of onion that can repulse these athirst bugs .

Just be aware that this vegetable prefers alkaline to indifferent soil pH and will not develop well in anything acidic .

green sowthistle plant with a single yellow flower growing outdoors

18) African Marigold

One of the in force plants for attracting pollinators , the African marigold can also wreak good insect like ladybirds to your nearby plant that will junket on any possible pests .

African marigoldsbear frilly bloom throughout the summer and fall month , will look keen amongst your onion and add a touch of fervent color to your garden plot .

These plant are soft to grow and only spread to about 50 cm across-the-board so they wo n’t take up too much room – allow you with plenty of blank to grow more veggie !

chamomile plants with daisy-like flowers growing next to wild onions with purple flowers in a field

19) Common Beetroot

Beetroots bed the pest - repelling aroma that nearby onions can allow and are another easy - to - grow veg that boom in like conditions as others already refer on this list .

I lovegrowing beetroots as part of my vegetable garden , as they grow quite quickly and their leafage also looks great , adding some leafy good to my plot .

20) Common Sowthistle

Another weed , I know , but sow thistle is actually really useful to have grow in your vegetable patches near your onions for a couple of reasons – and will not usually become too much of a pain .

Not only does it add together food to the soil it grows in like Sir Francis Bacon weed , but this edible weed can also be glean and used as a natural mulch , or , as it is normally touch on : ‘ chopped and sink ’ onto the ground around your plants .

So , before getting rid of these dope entirely , consider how they could gain your onions , whether that ’s in the ground or as chop - up mulch .

potato crops growing in rows being watered with a sprinkler system and onions growing in the foreground

21) Chamomile

With daisy - like flowers and a small-scale , thickset size reaching no more than 50 cm in acme and spread , you might be shock to learn that this little herbaceous plant can actually do a lot for your onions and other veg .

Chamomile ’s anti - fungal properties help to foreclose wad of vegetables from developing fungous issues such as origin rot , rust and mould , so preserve your Allium cepa close to this recurrent herb is definitely a right idea.7Chamomile – an overview . ( n.d . ) . Science Direct.https://doi.org/10.1016/B978-0-323-85542-6.00003-2

It ’s also cracking at disgust some common pests , so planting onions and chamomile around other vegetables in this list can really aid protect them from aphids , tent-fly and mealy bug likewise .

mountain chrysanthemum with white, daisy-like flowers growing in a field with wild onions that have purple flowers

22) Potato

spud are a kitchen stapleand make a expectant addition to any habitation grower ’s garden .

develop them next to onion is a great way of life to raise as big a yield as possible , as alliums do n’t take up much distance and wo n’t harm your tater in any means .

However , they do not care too much sun , so make indisputable they are set in a shaded location or near tall crops that will protect them from the sun ’s rays .

large parsnips covered in soil that have been dug up with a garden fork

“ Onions and potatoes are quite athirst plants , so you do n’t want too much contender with those two , ” admonish Gerald Stratford , Vegetable Expert .

23) Mountain Chrysanthemum

The terminal bloom to appear on this list , the quite a little chrysanthemum is a daisy - comparable mixed bag that benefits from onion plant ’s ability to dissuade aphid with its scent .

All chrysanthemumsare great pollinators and will reward your onion crop with wads of bee and butterflies that should cannonball along up pollination and help the wildlife in your garden thrive .

24) Parsnip

A luscious veg that will match nicely with your onions when raise in the background and in the kitchen , parsnips are stalwart plantsthat grow best in similar conditions to onions and the other veggies on this tilt .

Like carrots , parsnip can often be damaged by Daucus carota sativa flies , so planting them near onions will help to keep them protected from these pests .

Parsnips prefer acidic to impersonal soil , so ensure the spot you opt to grow them in is not alkalic and you will be rewarded with scrumptious yields .

cabbages with big leafy foliage companion planted with wilting onion plants

25) Ornamental Cabbage

Most brassicas arrive fromornamental cabbage , so this delicious veg is definitely one you should consider for your veggie garden .

unluckily , like the other brassicas on this list , this plant life is susceptible to pest damage and will enjoy the opulence of being planted next to pungent onions that will help to deter them .

Cabbage is a dispirited - care veggie and will be well-to-do to care for once established .

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