Skip to main content

Do your plants need vitamins? Here’s what you need to know

Plant nutrition can be a complicated topic. There’s a wide assortment of products available on the market, ranging from fertilizers to supplements to sprays. Which ones do you actually need, and which are just for show? Here’s everything you need to know to guide you in making informed decisions about your garden.

Do my plants need vitamins?

There’s a variety of nutrients plants need, and different plants need things in different amounts. It’s a good idea to research the types of plants you have to see what their specific needs are. In general, plants do absorb and use vitamins, but most of their nutrients are derived from minerals and elements.

A hand gently dropping small blue fertilizer beads onto the soil around a young plants
Image used with permission by copyright holder

Some vitamins are still useful for plants, but, in general, they’re not quite as important as making sure your plants have enough nitrogen, phosphorus, and potassium. There also isn’t as much research into which vitamins are helpful and what specifically they do.

A good place to start is testing your soil to see what nutrients are naturally occurring. Once you know what you already have, then you can start adding in supplements. You can get a home soil test kit online, or you can see if your local landscaping or gardening businesses offer soil tests as a service. If they do, they can usually also offer advice on what products would be best for your specific soil.

What vitamins do my plants need?

Since research is limited, there are a lot of unsubstantiated claims as well as some tentative findings. That’s important to keep in mind. Three vitamins have been studied, but the research isn’t definitive yet. It’s good to keep a look out and see what future research might say about vitamins and plants.

Some studies showed that vitamin C is helpful for photosynthesis and could offer some protection from smog and ozone. This would make vitamin C supplements very useful for gardening or farming in urban areas where higher levels of smog can damage plants.

A hand holding an orange
Herman Delgado / Unsplash

Vitamin E has also been found to potentially make plants more resistant to cold. This is a very interesting finding as it could lead to the development of more cold-resistant plants and make gardening and farming easier to maintain in more northern areas.

Vitamin B has been the subject of several studies with mixed results. Some studies found that vitamin B helped strengthen plants, but other studies found no such improvement. There isn’t yet consensus on what, if anything, vitamin B does to help plants, so research will just have to continue.

Should I give my plants vitamin supplements?

While the research on the potential benefits of vitamins isn’t yet clear, there haven’t been any reports of small doses of vitamins harming plants. If you want to add vitamins to your garden, then you certainly can! You just want to be sure you’re adding garden supplements, not human-grade multivitamins.

When you’re looking for a garden supplement and comparing products, check to see if the product lists all the vitamins and minerals included. If they make claims about what the vitamins they’ve added do for plants, see if they mention a study or support their claims. If they aren’t backed by science, they may not be trustworthy!

Of course, whenever you’re adding anything to your garden, you want to read the instructions carefully. More isn’t always better! Too much of one nutrient can stop a plant from absorbing and using another nutrient or cause other problems.

A row of four small plants potted in cube shaped pots. Three plants are living, one is dead.
Theera Disayarat/Shutterstock

If you want to add vitamins to your garden, but aren’t entirely sure if they’d work for you, you can always run a little experiment at home! All you need is two separate garden spaces or two of the same pots or planters. Make sure all the other conditions are the same, and then add vitamins to one and not the other. This can be a great way to teach the scientific method to children, and an excellent way to see for yourself which vitamins work for you!

While the jury is still out on vitamins, there are plenty of ways you can experiment and be your own judge. Whether you decide to add vitamins, or stick to the minerals that we know for sure work, the important thing is that you enjoy your garden!

Editors' Recommendations

Cayla Leonard
Cayla Leonard is a writer from North Carolina who is passionate about plants.  She enjoys reading and writing fiction and…
How to grow lantana: Everything you need to know
Grow beautiful lantana flowers with this guide
Pink and yellow lantana flowers

Lantana is a beautiful and colorful flower that comes in several bright colors, including orange and pink. Not only is it lovely for humans, but it also attracts tons of butterflies, bees, and even hummingbirds. If that sounds like the perfect flower to you, then you’re in luck! Lantana is fairly easy to grow, and this guide to lantana care will answer all your questions, from where to plant it to what other plants it pairs well with. So grab your lantana seedlings and a trowel and let’s get started!
Planting lantana

Start planting your lantana after the last frost of the year has passed. Lantana is a tropical plant, and it thrives in hot, humid conditions and frost can damage it, especially if it is young or recently planted. Choose a planting location that is in full sun, with rich, well-draining soil. Lantana can tolerate some light shade, but the flowers will be brighter and more numerous if your lantana is in full sun. Lantana enjoys wet soil, but it can still develop root rot or other fungal infections if left in standing water for too long.

Read more
Curious how you can grow your own blackberries? Here’s our complete guide
Grow fresh blackberries with these tips and tricks
Ripe blackberries on the bush

For those of us who grew up in rural areas, reaching into a bramble thicket to harvest some ripe, juicy blackberries is a defining childhood memory. Even if you grew up elsewhere, there’s a good chance you’re a fan of these berries. They're delicious on their own or added to tarts, pies, or smoothies.

If you're craving fresh blackberries, then you should know that blackberries are easy to grow and propagate at home! We’ve got everything you need to know about how to grow blackberries and add this fruit to your garden. Here is your handy guide.
What variety of blackberries should you grow?

Read more
What’s a French drain? A fantastic way to rid your garden of excess water
Build your own French drain with these tips
A person digging into grass with a garden fork

All plants need some amount of water, but they also all have a limit. Too much water can be even worse than too little water in some cases. During rainy weather, if water is pooling in parts of your garden it could spell disaster for your plants. Luckily, there are ways to drain the extra water away from your garden and direct it elsewhere. This simple guide to French drains will explain everything you need to know to answer the question, "What is a French drain?" and to learn about installation and maintenance.
What is a French drain?

As the name implies, a French drain is a type of drainage system. Think of it as a reverse irrigation channel; rather than carrying water to thirsty plants, it takes water away from drowning ones. The system itself is fairly simple. You put a pipe in a trench, which slopes away from the garden toward a storm drain, drainage ditch, or rain barrel.

Read more