Companion planting

Carrot 伴生植物

Q: What are good companion plants for Carrot?

Common beneficial companions for Carrot include Lettuce, Chives, Marigolds, Carrots, Radishes, Spinach, Nasturtiums, Peas, Garlic, Onions.

Q: What should I avoid planting near Carrot?

Often avoided near Carrot: Fennel, Dill, Hyssop, Parsnips, Brassicas, Sunflowers, Tomatoes, Black Walnut.

汇总开放品种笔记中的有益与忌避伴生（驱虫、土壤与风味）。

Carrot growing calendar → 伴生

Adapted from Wind River Greens Plant Variety Database (CC BY 4.0) — 56 varieties in root-vegetable. Credits

宜同种

常推荐与 Carrot 相邻的伴生。

Lettuce (54)

Shallow roots don't compete, provides ground cover and can be harvested before turnips mature Shallow roots don't compete with daikon, can be harvested before daikon needs full space
Chives (42)

Natural pest deterrent, repels aphids and improves soil health Repels aphids and flea beetles that commonly attack radishes
Marigolds (42)

Repels nematodes and other soil-dwelling pests harmful to roots Deters root maggots and other soil-dwelling pests that damage radish roots
Carrots (34)

Radishes break up soil for carrots and mature faster, allowing succession planting Break up soil with their taproots, improving drainage and soil structure for rutabagas
Radishes (31)

Break up compacted soil and harvest early, making room for mini turnips to expand Fast-growing trap crop for flea beetles, also helps break up compacted soil
Spinach (31)

Cool season companion with similar water needs and minimal root competition Cool-season crop that complements daikon's growing period, doesn't compete for root space
Nasturtiums (26)

Acts as trap crop for flea beetles and aphids, protecting radishes Act as trap crop for aphids and cucumber beetles, protecting rutabaga foliage
Peas (25)

Nitrogen fixation benefits radish growth, and peas provide light shade Fix nitrogen in soil, providing nutrients for heavy-feeding rutabagas
Garlic (19)

Natural fungicide properties help prevent clubroot and other soil diseases Natural pest deterrent against aphids and root flies, strong scent confuses pests
Onions (18)

Repel root maggots and other soil-borne pests that commonly attack rutabagas Repel root maggots and other soil pests that commonly attack turnip roots
Tomatoes (16)

Help deter carrot flies while carrots may improve tomato flavor Provides partial shade and may improve carrot flavor when planted nearby
Rosemary (14)

Strong aromatic oils confuse and repel carrot flies and other pests Deters carrot flies, cabbage moths, and other pests with aromatic oils
Sage (14)

Repels carrot flies and cabbage moths with aromatic compounds Repels carrot flies and root flies while attracting beneficial insects
Leeks (13)

Repels carrot flies and root maggots through strong scent compounds Deters carrot rust flies while carrots repel leek moths
Bush Beans (11)

Nitrogen fixation improves soil fertility without competing for space Fix nitrogen in soil, improve potato yield without competing for space
Cucumber (11)

Radishes may help deter cucumber beetles and striped cucumber beetles Radishes repel cucumber beetles while cucumbers provide ground shade for radish roots
Cabbage (8)

Benefits from loose soil created by potato growth, different root depths Beets help loosen soil for shallow-rooted brassicas, mutual pest deterrence
Parsley (8)

Attracts beneficial insects and doesn't compete for root space Attracts beneficial insects while requiring minimal ground space
Dill (5)

Attracts beneficial insects and may improve radish flavor Attracts beneficial insects that control radish pests like aphids and flea beetles
Nasturtium (4)

Acts as trap crop for Colorado potato beetles and aphids Acts as trap crop for Colorado potato beetles and aphids, deters cucumber beetles
Corn (3)

Provides natural windbreak and shade, different nutrient requirements Provides natural windbreak and doesn't compete for underground space
Horseradish (3)

Planted at corners of potato patch, repels Colorado potato beetles Repels Colorado potato beetles and improves disease resistance
Marigold (3)

Repels Colorado potato beetles and nematodes, reduces soil pests Repels Colorado potato beetles and nematodes, reduces pest damage
Swiss Chard (3)

Same family with similar growing requirements, can share garden space efficiently Same family as beets, compatible growth habits and nutrient needs
Beans (2)

Fix nitrogen in soil and improve potato growth without competing for space Fix nitrogen in soil, improving potato growth and yield
Brassicas (1)

Onions repel cabbage worms, flea beetles, and other brassica pests
Celery (1)

Both prefer cool, moist conditions and have compatible growing requirements
Cilantro (1)

Attracts beneficial insects and repels harmful pests
Cucumbers (1)

Radishes repel cucumber beetles and squash bugs
Mint (1)

Repels flea beetles and cabbage worms that damage turnip leaves
Oregano (1)

Repels many harmful insects and doesn't compete with sweet potato's spreading growth habit
Peppers (1)

Onions deter aphids and other soft-bodied insects that attack pepper plants
Radish (1)

Helps break up soil for turnip root development and deters flea beetles
Strawberries (1)

Onions repel slugs and other pests while improving strawberry flavor
Thyme (1)

Natural pest deterrent that grows low and won't interfere with sweet potato vines

宜分开

常建议远离 Carrot 的组合。

Fennel (18)

Allelopathic properties inhibit growth of most root vegetables Releases allelopathic chemicals that inhibit growth of most vegetables including rutabagas
Dill (15)

Attracts beneficial insects when young but can stunt carrot growth when mature Attracts carrot flies when mature and can cross-pollinate with carrots
Hyssop (15)

Inhibits growth of radishes and other brassicas through allelopathic compounds Inhibits growth of radishes and other root vegetables through allelopathic compounds
Parsnips (14)

Compete for same soil nutrients and space, attract similar pests Competes for same nutrients and attracts similar pests like carrot weevils
Brassicas (13)

Same family as daikon, compete for nutrients and attract similar pests like flea beetles Same family plants compete for nutrients and attract similar pests like flea beetles and clubroot
Sunflowers (12)

Allelopathic compounds inhibit growth of brassicas including rutabagas Allelopathic compounds inhibit growth of nearby vegetables, especially root crops
Tomatoes (10)

Heavy feeders that compete for nutrients and may stunt root development Heavy feeders that compete for nutrients and may stunt root vegetable development
Black Walnut (8)

Produces juglone toxin that severely inhibits growth of most vegetables Produces juglone toxin that stunts growth and can kill radish plants
Coriander (8)

May inhibit carrot germination and early growth through allelopathic effects Can attract carrot flies and may inhibit carrot seed germination
Turnips (8)

Competes for same soil nutrients and space, both being root brassicas Same family brassica that competes for identical nutrients and attracts same pests like flea beetles
Pole Beans (6)

Heavy nitrogen fixation can cause excessive leaf growth at expense of root development Vigorous vines can shade and overwhelm beet plants, reducing root development
Mustard (5)

Same family (Brassicaceae) - attracts similar pests and diseases like clubroot Allelopathic effects can inhibit beet germination and early growth
Grape vines (4)

Radishes can stunt grape growth and affect root development Stunts radish growth and development through root competition and chemical inhibition
Field Mustard (3)

Competes aggressively for nutrients and releases growth-inhibiting compounds Inhibits beet germination and early growth through allelopathic compounds
Sunflower (3)

Allelopathic effects inhibit potato growth and development Allelopathic effects inhibit potato growth and competes heavily for nutrients
Asparagus (2)

Competes for similar soil nutrients and both are heavy feeders Both compete for similar soil nutrients and can inhibit each other's growth
Beans (2)

Nitrogen fixation can cause excessive leaf growth at expense of bulb development Onions can inhibit bean growth and nitrogen fixation by rhizobia bacteria
Black Walnut Trees (2)

Produce juglone toxin that severely stunts or kills members of the brassica family Produce juglone toxin that severely stunts root vegetable growth
Brassica crops (2)

Same family plants compete for nutrients and attract similar pests like cabbage root maggots Share same pests like flea beetles and clubroot disease, increasing infestation risk
Cucumber (2)

Increases susceptibility to blight and competes for similar soil nutrients Increases susceptibility to bacterial wilt and competes for soil nutrients
Grapes (2)

Root competition and radishes may negatively affect grape vine growth Radishes can stunt grape vine growth and interfere with root development
Peas (2)

Heavy nitrogen production leads to weak, overly leafy leek growth Onions stunt pea growth and interfere with their nitrogen-fixing capabilities
Tomato (2)

Both are nightshades, attract same pests like Colorado potato beetle and blight Both are nightshades susceptible to same diseases like blight and attract Colorado potato beetles
Broccoli (1)

Fellow brassica competes for nutrients and attracts cabbage worms
Brussels Sprouts (1)

Both are brassicas competing for same nutrients and susceptible to similar pests and diseases
Cabbage (1)

Fellow brassica that competes for nutrients and attracts cabbage root maggots
Charlock (1)

Competes aggressively for nutrients and can stunt beet root development
Cucumbers (1)

Compete for water and nutrients, may increase disease susceptibility
Hedge Mustard (1)

Hosts clubroot disease that can devastate turnip crops
Walnut Tree (1)

Produces juglone which is toxic to potatoes and inhibits their growth
Walnut Trees (1)

Produce juglone which is toxic to sweet potatoes and inhibits root development

FAQ: companion planting with Carrot

What are good companion plants for Carrot?

Frequently cited companions include Lettuce, Chives, Marigolds, Carrots, Radishes, Spinach, Nasturtiums, Peas, Garlic, Onions, Tomatoes, Rosemary. Reasons come from open cultivar notes (pest deterrence, soil, flavour).

What should I avoid planting near Carrot?

Often avoided: Fennel, Dill, Hyssop, Parsnips, Brassicas, Sunflowers, Tomatoes, Black Walnut, Coriander, Turnips.

效果因气候、土壤与品种而异。请以当地为准。数据改编自 Wind River Greens（CC BY 4.0）。