Plants are living breathing things that need food, water, and sunlight to grow and flourish, not so different from we humans. It is human nature to search out companionship from others. When we have this suitable companionship, we tend to flourish in our lives and live a richer existence. Did you know that plants fair better with companions as well?
Maybe you have heard of a three sisters garden. That is a method of planting that incorporates three different vegetables planted near one another so that they may aid each other as they grow. One is corn. Corn will grow tall and will act as a trellis of sorts for the next plant that is placed in front of each stalk and that is climbing beans. As the beans mature they will climb the corn stalks and save you from having to trellis them. Last, you would plant squash between each stalk of corn to help keep the weeds at bay and aide in maintaining moisture for the other plants by shading the ground. While this may be the most common companion planting, it certainly isn't the only one.
Your tomatoes will enjoy the company of some basil and marigolds. Basil is thought to produce a sweeter taste in tomatoes when grown together. Though there is no scientific proof of this claim, gardeners have sworn by its validity for ages. Some gardeners even claim that they taste a hint of basil in their tomatoes. But aside from the claims that basil improves the taste of tomatoes, there is scientific proof that planting basil and marigolds with tomatoes can ward off some unwanted pests. Insects that normally wreak havoc on tomato plants and their fruit are kept away by the pungent scent of the basil and marigolds. Marigolds planted between tomato plants also help to repel root-knot nematodes. These pesky little plant-parasitic nematodes are responsible for about 5% of the world's crop loss every year.
If you plant marigolds or nasturtium among your cucumbers you will be able to keep the aphids and beetles away. However, you don't want to plant aromatic herbs with cucumbers as they may stunt the growth of your cukes.
Basil planted with peppers is thought to improve flavor and keep away aphids and spider mites. Also if you are planting onions you can plant them alongside your peppers to help keep insects away.
Planting rosemary and summer savory with your beans help to keep away beetles. Summer savory will also improve the growth rate of most climbing beans. A customer mentioned that she always puts savory in her beans when she cooks them.
If you want to try your hand at carrots, plant onions with them to help keep the carrot flies away. Generally speaking, you should not plant root crops with other root crops so that they will not compete for available phosphorus in the soil. However, onions are an exception to the rule. Planting sage and rosemary among your carrots is thought to keep some foraging furry friends at a distance as well.
Mint planted among your lettuce and leafy vegetables is a tremendous help with keeping away slugs. It is also thought that spearmint and peppermint actually help to sweeten the taste of your leafy plants. It is best to keep peppermint and spearmint in a container as they are aggressive.
In general, a good companion just makes life sweeter and less stressful. Without all the pests to bother them, your plants will grow happier and be more productive.