Rather than focusing on specific crops in isolation, more growers are adopting this more ecological approach to food production. In other words, by combining specific plants, they are recreating nature's untamed ecosystems.
But it doesn't mean your garden needs to be overgrown and unruly!
Companion planting is intentionally selecting and spacing beneficial plants to maximize their growth. As an added bonus, this can make your landscape look more lovely and lush.
Tips for Successful Companion Planting
While monoculture entails planting enormous quantities of the same species (for example, a large field of corn), companion planting mixes different species into a planting to form a polyculture.
These interactions between plants might be mutually beneficial (symbiotic) or neutral to one plant but advantageous to the crop (commensal). In any case, adding companions into your garden has a plethora of potential benefits and very few drawbacks if you avoid a few common blunders.
Does Companion Planting Work?
The answer is yes, but perhaps not in the way you expect.
Many different forms of companion planting are used in effective organic gardening practices.
This article discusses Tips for Successful Companion Planting and offers practical advice for incorporating companion planting principles into your home garden.
Understand What Not To Plant Next To Each Other
Some plants demand different amounts of light and water and should not be planted close to each other.
Some plants share pests or illnesses and should be planted as far apart as feasible. Fortunately, there are only a handful to be aware of, such as:
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Crops
with Similar Pests
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Keep
corn away from tomatoes;
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They
share a common pest (corn ear-worms).
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Do not
plant potatoes near tomatoes;
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It may spread blight.
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Separate members of similar crop families
if possible.
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Some plants share common pests or diseases
and should not be planted near each other if possible.
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Practice Companion Planting to Attract Beneficial Insects and Pollinators
Your garden will become more appealing to beneficial insects and pollinators as you use polyculture practices (see Tip #4 below) and provide diverse habitats and food.
Pesticides should not be used to eliminate beneficial insects. Pesticides are dangerous because they frequently have unforeseen repercussions and do not distinguish between good bugs and pests.
• Companion planting is used to attract beneficial insects and pollinators.
• Pesticides should be avoided at all costs.
• Plant as many insect-friendly plants as you can (see list below).
• Incorporate flowering annuals, herbs, and perennials into your garden design.
• Plant stems should be left in place for nesting bees and other insects.
• Organic pest management measures should be used sparingly and with caution.
• Create a variety of habitats and food sources for beneficial insects.
• In order to attract more beneficial insects and pollinators to your garden, follow these steps:
• Allow flowering plants and flowers to bloom and postpone cleaning.
• In your garden, use no-till practices.
• Companion planting is used to attract beneficial insects and pollinators.
Beneficial Insect and Pollinator-Friendly Plants:
Alfalfa, Alyssum, Angelica, Marigold, Mint, Parsley, Prairie Sunflower, Queen Anne’s Lace, Rudbeckia, Scabiosa, Statice, Sunflowers, Tansy, Thyme, Lemon Balm, Lobelia, Lovage, Mallow, Tithonia, Zinnia. Basil, Borage, Buckwheat, Butterfly Weed, Caraway, Chervil, Clover, Coreopsis, Coriander (Cilantro), Cosmos, Dandelion, Dill, Fennel, Lavender,
Implement Polyculture Practices in Your Garden
Monoculture: Each bed or area of land has a single type of plant. Pests find it much easier to find their intended crop in a monoculture.
Polyculture: A variety of plants in each bed or plot of land.
More than any single
companion plant combination, adding a wide variety of herbs, flowers, vegetables, and fruit to your garden can benefit it. Planting diversity draws a greater range of beneficial insects and pollinators. Provide food and shelter for pollinators and beneficial insects in your garden.
I started gardening utilizing square foot gardening methods. This is the strategy I am still using now.
The natural polyculture that comes from interplanting numerous different species of fruit, vegetables, herbs, and flowers within the same bed is one of the reasons this strategy is successful.
How to Implement Polyculture Practices:
1. Learn how different crops grow so that you can plant crops that demand similar amounts of light and water near one other.
2. Refrain from planting all of one variety of vegetable in one spot. Distribute it around your garden.
3.
Plant multiple varieties of the same crop (squash, beans,
tomatoes, etc.) in different regions of the garden.
4. Don't be afraid to mix up the vegetables, herbs, and flowers in each bed.
5. Fill any empty spots (or squares) in your garden.
6. Incorporate perennial herbs into your garden beds.
7. Plant crops at different times of the year. As cool-season crops are harvested, add warm-season crops. Once the cool-season crops have been harvested, the warm-season crops will be ready to take advantage of the extra space.
Learn which flowers and herbs are useful to insects and pollinators, and put flower or herb seeds in each garden bed at planting time.
Use Companion Plants As Supports or Shade for One Another
Although this happened by mistake in my garden (cucumbers discovered a nearby sunflower), I've subsequently learnt to exploit it to my advantage. With a little forethought, you can leverage the physical traits of plants to assist one another, such as tall stalks providing support for vining crops.
Tall plants' vertical space helps you to grow more in less space. Other advantages of vertical planting include greater sunlight and airflow, increased pollination, ease of harvesting, and pest detection.
Plant higher crops (or vertical crops) to shade smaller, more sun-sensitive plants.
Crops That Can Provide Vertical Support Include:
Amaranth, Corn, Okra, Roselle Hibiscus, Sunflowers, Tithonia (Mexican sunflower).
Crops That Can Provide Vertical Support
Sprawling or climbing plants include: Asparagus Beans, Pole Beans, Small Winter Squash Varieties (Delitica, Mini-Jack Pumpkin), Malabar Spinach, Cherry-Type
Tomatoes, Peas, Cucamelons, and Cucumbers.
Sprawling or Climbing Plants
Crops that can provide shade include: Luffa, Asparagus, Sunflowers, Corn, Cucumbers, and Winter Squash.
Crops That Can Provide Shade
Strawberries are inter-planted with onions for pest control and with asparagus to provide shade during the hot months. Strawberries are inter-planted with onions for pest control and with asparagus to provide shade during the hot months.
Low-Maintenance Pollinator Garden Ideas
Attract Beneficial Insects
Flowering plants not only attract pollinators, but they can also increase the activity of other helpful insects in your garden. These beneficial insects will eat pests, reducing the need for harsh insecticides.
Plants such as cosmos, calendula, and marigolds attract parasite wasps and hoverflies that prey on cabbage loopers and other pests. These plants can be beneficial in the cultivation of broccoli, cauliflower, and other brassicas, which are frequently attacked by caterpillars.
If you're dealing with aphids, dill, alyssum, and coriander can attract ladybugs, which can help keep aphid populations under control.
Control Weeds
Large leaves protect plants from the light, but they do more. Planting leafy greens and other plants with broad leaves in your garden beds can really help keep the soil covered. As a result, weed growth will be naturally suppressed, reducing the demand for weed killers. Leafy plants can also assist regulate moisture levels for surrounding plants by covering the soil and slowing evaporation rates.
Companion Planting Chart Here
Challenges of Companion Planting
Companion planting in your yard may be an art as much as a science. There are numerous factors to consider, especially when attempting to plant for pest control or other symbiotic benefits.
Whether you're a novice or a seasoned gardener, no season is without its challenges. As climatic pressures intensify and weather changes become more extreme, our gardens must be more resilient than ever before.
What if there was a way to repel pests, reduce weed pressure, and increase the health of your garden without using extra chemicals?
Companion planting does this. This approach builds symbiotic interactions in the garden by drawing on old agricultural knowledge. Certain flowers, herbs, and vegetables encourage the growth of their neighbors, allowing you to maximize space, yields, and flavor.
It all starts with research, preparation, and diligence if you want to become a pro inter-planter.
Gardeners, thankfully, have been doing this for decades (if not millennia), and they've left a lot of knowledge for us to learn from. Furthermore, contemporary science has validated the benefits (and negatives) of specific partner
combinations.
Potential Drawbacks
Companions Compete with Crop for Water
Water retaining capacity and irrigation may be an issue in your garden depending on the soil type. When there is a scarcity of water, stronger and deeply rooted plants can "steal" water from your vegetables. This can also occur if certain plants are planted too close to a crop.
Because carrots,
tomatoes, peppers, squash, and potatoes have deep taproots and root hairs, shallow-rooted crops have a tougher time retaining water.
When selecting companion plants, be sure that deep-rooted vegetables or herbs do not drain moisture from shallow-rooted crops such as spinach, lettuce, corn, radishes, or onions.
Solution.
The simplest method to avoid this error is to keep the soil continuously moist. Mulches, soaker hoses, and drip irrigation are excellent strategies to guarantee that all of the plants in a bed receive adequate water.
Soil and Light Requirements
It is critical to follow plant requirements for soil fertility.
It's tough to modify the soil composition within a few square feet when planting two species in the same location. Brassicas, for example (broccoli, kale, cauliflower, cabbage, and so on) demand well-drained, loamy, somewhat alkaline soil.
Potatoes prefer sandy, somewhat acidic soil. If these crops were planted close to each other, one of them might be unhappy due to differences in pH or soil texture.
Solution.
Prior to planting, learn about each species' soil preferences (pH, drainage, organic matter, and texture). Check out this chart to learn about common garden plant pH preferences.
Different Maintenance Needs
It is critical to consider whether the care requirements of your crops and companions are compatible.
You can probably tell that the most crucial secret to
companion planting is to plant like with like.
Feathered friends swarm together! Plants with
similar requirements do as well. When you try to blend species with vastly differing maintenance requirements, things are bound to go wrong.
Potatoes, for example, must be hilled to keep their tubers underground. If they were planted near broccoli, cucumbers, or strawberries, those crops may become buried or suffer from stem rots as a result of excess soil mounded up at their base. It would also be tough to maneuver your shovel or hoe into the space to mound up the soil around the potato plants.
Solution.
Make sure you are informed of your crop's upkeep requirements as well as the prospective companions. Pruning, hilling, mulching, and weeding might become more difficult if two plants are physically incompatible.
Shading Out Your Crop
Make certain that companion plants do not begin to shadow other crops in the garden that require full sun.
Many of the amazing benefits of symbiotic planting are negated if one plant gets too large and begins to shade out the other. Because sunlight is the source of energy for photosynthesis and plant growth, this competition for light can be detrimental to your crop.
For instance, in the event that you let your cucumbers vine along the ground (I advocate trellising them), tall friends such as sunflowers or rambunctious nasturtiums can provide a shady canopy over them.
Tomatoes and bush beans are another example.
Tomatoes' robust, towering growth will quickly shade out beans planted near their base.
However, keep in mind that partial shadow might be helpful to some crops. For example, head lettuce placed 6-8" from tomato plants may benefit from the canopy's light shade. This can also keep you from bolting in the heat of summer.
Solutions.
Because most important garden crops require full sunlight, use low-growing partners whenever possible. It is important to trellis vining crops to conserve space while still allowing
companions to benefit them.
It is also beneficial to consider the solar aspect (how the sun shines on your landscape). You are less likely to encounter problems in a south-facing garden where plants are appropriately spaced and receive the necessary warm sunlight.
Planting Allelopathic Companions
Some plants, like people, are simply not intended to be together. Certain plants can actually limit the growth of others, causing a chain reaction of bad consequences for your crop.
Allelopathic plants create substances in their root zone that can cause injury or even death to surrounding plants. They use these substances to inhibit the growth of their neighbors, allowing them to thrive in nature (survival of the fittest, right?).
Perennials that are very allelopathic include black walnut, rhododendron, sumac, and elderberry. Brassicas and mustards, fennel, sunflowers, and buckwheat are examples of garden vegetables with mild allelopathic qualities.
Incompatible Plants
Make sure your
companion pairing does not include any allelopathic or unsuitable plants. The following are the most common incompatible combinations:
Mint or alliums with Asparagus: Both mint and alliums contain volatile oils that can be beneficial in repelling pests but can also inhibit asparagus growth.
Beans and Onions: These plants are known to suppress each other's growth, especially during seed germination.
Potatoes and sunflowers: Sunflowers produce terpenes and phenolic chemicals that are toxic to or inhibit potato growth. They can also be used to block them out.
Fennel: Fennel produces soil chemicals that inhibit the growth of the majority of competition. It's best kept in its own garden section.
Final Thoughts
Companion planting does not have to be difficult, but planning ahead of time greatly boosts your chances of success. Let's go over the essentials of
companion planting.
Before planting two species in the same bed, consider the following:
1. Did you provide enough space for both plants to mature to their full size?
2. Will the species compete for resources such as water and nutrients? Do they have similar fertility requirements?
3. Will one plant shade out the other or compete for sunlight when fully grown?
4. Does a certain plant attract or repel pests? Are they prone to the same pests?
5. Can the companions have a poor relationship? Is one of them allergenic?
If these factors are not appropriately managed, you may end up with two crop failures at the same time. But don't worry, if you try out a partner combo that doesn't work, it's happened to the best of us! The companion plant can be easily pruned back or pulled up and replanted in a new area of the garden.
FAQ
Do different types of soil affect companion planting?
Yes, different types of soil can affect companion planting. Soil type can impact the availability of nutrients, water retention, and pH levels, all of which can influence the growth and health of plants. For example, plants that prefer acidic soil may not grow well in alkaline soil, and plants that require well-draining soil may struggle in compacted or clay soils. Companion planting aims to pair plants that have mutually beneficial relationships, such as those that improve soil health or repel pests. Therefore, it's important to consider soil type when selecting companion plants and to adjust soil conditions as necessary to create an environment that supports healthy growth
How long does it take to see the benefits of companion planting?
The timeline for seeing benefits of companion planting can vary depending on various factors, such as the types of plants being grown, the planting techniques used, and environmental conditions. In some cases, benefits may be seen immediately, such as when plants are used to repel pests or improve soil quality. Other benefits, such as improved yields or disease resistance, may take longer to become noticeable and may require several growing seasons to fully develop.
Generally, it is recommended to practice companion planting consistently and over the long-term to see the greatest benefits. This can involve experimenting with different plant combinations and observing how they interact with each other over time. With patience and careful observation, the benefits of companion planting can be significant and sustainable in the long run.
Can companion planting help deter specific pests?
Yes, companion planting can help deter specific pests by using the natural properties of certain plants to repel or distract them. For example, planting marigolds with vegetables can repel nematodes, while planting onions or chives with carrots can deter carrot flies. Similarly, planting basil or mint with tomatoes can help repel tomato hornworms, and planting nasturtiums with squash or pumpkins can distract squash bugs. Companion planting can also attract beneficial insects that prey on pests, such as planting flowers to attract ladybugs that feed on aphids. Overall, companion planting can be an effective and natural way to reduce pest damage in gardens and farms.
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