Companion Planting Flowers for Your Vegetable Garden

It doesn’t take rocket science to understand why we love flowers. I mean just look at these beauties! They are Nature’s purest form of eye candy!

If you’re looking for an overall guide to Companion Planting, I’ve got you covered too, with this Free 5 page Guide!

Flower Power

As I’ve grown up (well, a little anyways) and understand more of the science behind why flowers naturally create a more balanced garden, I’ve fallen head over heels all over again. They are essential for organic vegetable gardening. Plus my gardens are more colorful, fruitful and ALIVE because of these growing works of art. I mean who wouldn’t want to get a chance to work with beautiful nature to grow more and bigger veggies!

While planning and plotting a fresh new local garden (I’m loving my design + consult sessions!) I kept hearing myself going on and on about the importance of saving space for flowers in the garden. Turns out I’m pretty jazzed about the power of pollinators and beneficial insects in the vegetable garden. So, I figured if it was that important to gush about one on one, it was probably worth a deeper dive here 😊

All About the Annuals

I talk more about using flowers in companion planting and garden planning in the blog post Garden Dreams to Garden Goals. But honestly, just bringing in the nectar sources from any of these flowers will make your garden hum – literally! The flowers listed here can all be started by seed. I tend to direct sow them into the garden soil (follow soil temperature guidelines on seed packet) because I run out of room under my grow lights. But you can start any of the plants listed indoors to get an early bloom- aka nectar source going. And, please- take all these ideas with a pinch of salt (or garden lime- who has the tequila), because what works for one garden(er) won’t necessarily work for another. And therein lies the ephemeral magic of gardening!

Calendula

Variety: Calendula Resina, Seed Savers Exchange

This flower IS sunshine reflected. I’d grow this plant for its bright blooms alone, but the powerful medicinal properties make it (dare I say) my favorite beneficial garden flower. Calendula was one of the first flowers I grew for its herbal properties. It has taught me so much, so of course it holds a special place in my big old flower loving heart. Calendula also attracts the good guys such as ladybugs, lacewings and hoverflies that help control aphids, thrips and other destructive pests. Easy to start from seed, I have direct sown in mid-May and gotten bumper crops of petals late in the season. If you want earlier harvests start seeds indoors, though I’ve heard they are a bit tricky to transplant. I grow a swath of these among my rhubarb in the veggie patch and in another sunny corner of the yard to ensure I have enough of the powerful petals to make some of my soothing calendula salve. They seem to be deer and rabbit safe. They do tend to reseed, so plant where you’re OK with them continuing to pop up.

Cosmos

Variety: Sonata Mix

These are true show stoppers and can easily take over a LARGE portion of the garden. They run tall, 5-6 feet, and a packet of seeds can cover a good 4 square feet. That being said, I’ll always have some of these beauties in my gardens, because- well, just look at them! The color and simple yet full petal design combined with being drought tolerant makes them a keeper! They also play their part in happy garden insect play- attracting the bright green/metallic long-legged fly, (shown on white Cosmos) hover flies, bees, parasitic wasps, butterflies and even bird. The chickadees and hummingbirds frequented mine last Summer. Those beneficial bugs and birds nibble the pests (aphids, squash beetles etc) that prefer to eat my veggies.

Marigold

Varieties: French Marigold (Tagetes patula)
Mexican Marigolds (Tagetes minuta) + Lemon Gem (Tagetes tenufolia)

I’ll admit there was a time I thought I was too cool for the old school marigold. But when you plant true varieties (not the puffed up hybrids please!) they attract all the right insects and are so easy to collect seeds from, you’ll never want for color again! My favorites just might be from the White Bear Lake Seed Library (read more about the WBL Seed Library HERE). I planted these in both my home garden and the YMCA Community Gardens last Summer and they were marvelous! The kids especially loved their vibrant colors and collecting all those seeds (there’s a reason everyone had them in their gardens for centuries). Technically they produce a substance called alpha-terthienyl, a chemical that suppresses nasty nematodes and cabbage worms. Some botanists think the smell conceals other vegetable odors too, keeping more bugs further away from your precious crops! Marigolds keep my tomatoes, peppers and eggplants happy by keeping away some bad bugs!

Zinnia

Variety Pictured: Magellan Mix from Jung Seed

Zinnias deter cucumber beetles and tomato worms. They attract predatory wasps and hover flies, which eat insects that would otherwise destroy garden plants. Zinnias attract hummingbirds, which eat whiteflies before those flies can damage tomatoes, cucumbers and potatoes. They manage to do all that while bringing a striking color pop to the garden border. The colors look like you amped up the ‘color saturation’ filter every time. They *can form tidy little rows of color blasts- depending on the variety you chose. Heights range from 12 inches to 5 feet, and every color under the sun. Which also means there will be a zinnia you’ll fall for 😉 And they keep blooming into the fall here in Minnesota. A pollinator favorite, these zingers brighten the veggie patch with their own colors and their colorful visitors.

Sweet Alyssum

Full disclosure, I’ve meant to plant this for years, but somehow last year was the first time it made it into my gardens. Tucked in along the rows of potatoes. They were pretty much teeny tiny powerhouses of pure plant magic. And as I started writing this, I realize that I once again forgot to order them… Good thing Gardens always give you another season 😉

Garden Growth

The concept that I can work with nature, using plant’s natural chemical reactions has captured my imagination and keeps me exploring! The practice of using trap crops (plants that draw insects to them rather than nearby vegetable plants) and companion planting (using certain plants to mutually benefit each other’s growth) is fascinating. I practice the basics both in how I plant my veggies and which flowers I plant where. But I never get too hung up on specifics, I figure it has to look good to me as much as the bugs 😉

As I mentioned earlier, there are as many ways to garden as there are gardens. And soil is a living breathing, changing medium to work with, different even a few feet over let alone in a different town or state. But we can sway things in our favor- and make our gardens more colorful lively places at the same time by bringing in a mix of proven flower power.

I’m continuing to learn new and better combinations, varieties and uses for these multi-tasking beauties.

For an easy way to ID some of the common insect visitors, check out the very visual Good Bug/Bad Bug book. Written by Jessica Walliser, I will attest that kids and adults alike enjoy being identifying bugs using this book! She also has a great podcast episode with Garden Expert, Joe Lamp’l on The Joe Gardener Show. So cool to get a glimpse of just how much is going on in our gardens!!

Everyone has their own list of favorites flowers. Maybe developed because of a friend giving you a plant, memories of grandma’s garden, or even an Instagram photo…  so tell me, what are your favorites and why??? Are you adding any flowers to your vegetable patch this season?

I’m working on a perennial pollinator guide next, so many flowers to chose from!

Ready to Dig In and get planting!
Michelle