Have you ever planted nasturtiums just for their cheerful, peppery blooms—only to discover they’re so much more than garden eye candy? I used to think they were just colorful filler between my tomatoes. Then I learned the truth: nasturtium uses stretch far beyond aesthetics. From kitchen to compost, these vibrant plants pull double—sometimes triple—duty in my garden.
Preferences vary, of course. Some gardeners love them for their bold reds and oranges; others swear by their pest-repelling powers. Personally? I’m hooked on how they feed my soil, my salad bowl, and even my natural remedies cabinet. If you’ve only ever seen nasturtiums as decorative ground cover, you’re missing out—big time.
I’ve grown nasturtiums for over a decade, mostly in my raised beds in USDA Zone 7. At first, I planted them because they’re low-maintenance and bloom like crazy. But over time, I started noticing how aphids avoided my kale when nasturtiums were nearby… and how my scrambled eggs tasted brighter with a few flower petals tossed in. That’s when I realized: this plant is a quiet powerhouse.
In this guide, I’ll share exactly how I put nasturtiums to work—edible, medicinal, ecological, and even decorative. Whether you’re a beginner or a seasoned grower, you’ll walk away with practical, proven ways to get more from every seed you sow.
Edible Delights: Nasturtium Uses in the Kitchen
Let’s start with the most delicious part: eating them. Every part of the nasturtium plant—leaves, flowers, seeds—is edible and packed with a peppery, slightly spicy kick. I toss whole flowers into summer salads for a pop of color and flavor that beats any store-bought garnish.
The leaves? Think of them as nature’s peppery spinach. I blend them into pesto, stuff them into sandwiches, or chop them into omelets. Honestly, once you start using nasturtium greens, regular lettuce feels a little bland.
And don’t sleep on the seeds. Pickled nasturtium seeds—often called “poor man’s capers”—are a tangy, crunchy condiment I make every August. Just soak the green seed pods in a vinegar brine with garlic and dill for two weeks. They’re perfect on fish, charcuterie boards, or even stirred into grain bowls.
How to Harvest for Maximum Flavor
- Pick flowers in the morning after the dew dries—they’re crispest then.
- Harvest young leaves before the plant flowers for the mildest taste.
- Collect seed pods when they’re green and firm, not brown and dry.
Pro tip: Never wash nasturtium flowers too vigorously—they bruise easily. A gentle rinse is all they need.
Natural Pest Control: Nasturtium Uses in the Garden
Here’s a secret most gardeners don’t know: nasturtiums are magnetic for aphids. But that’s a good thing. I plant them as trap crops around my broccoli, kale, and cabbage. The aphids flock to the nasturtiums instead of my veggies—saving me hours of spraying and hand-picking.
I’ve also noticed fewer cucumber beetles and squash bugs in beds where nasturtiums grow freely. While science is still exploring the exact mechanism, many gardeners—myself included—swear by their repellent effect on soft-bodied pests.
Even better? Nasturtiums attract beneficial insects like hoverflies and predatory wasps. These little heroes lay eggs near aphid colonies, and their larvae feast on the pests. It’s like hiring a natural cleanup crew.
To be fair, they won’t eliminate all pests. But paired with companion planting (like basil and marigolds), nasturtiums create a resilient, self-regulating garden ecosystem.
Soil Health and Compost Boosters
Nasturtiums aren’t just pretty—they’re soil builders. Their deep taproots break up compacted earth, improving drainage and aeration. I’ve planted them in tough, clay-heavy spots just to loosen the soil before rotating in heavier feeders like squash.
When the plants finish blooming, I chop and drop them right in place. They decompose quickly, adding organic matter and nutrients back into the soil. Believe me, my compost pile loves a good layer of nasturtium greens—they’re rich in vitamin C and minerals.
They’re also light feeders, so they won’t compete heavily with neighboring plants for nutrients. That makes them ideal companions for nutrient-hungry crops like corn or tomatoes.
Medicinal and Wellness Nasturtium Uses
Did you know nasturtiums have natural antibiotic properties? I’ve used them in herbal remedies for years. The leaves and flowers contain high levels of vitamin C and antimicrobial compounds, traditionally used to support immune health.
I make a simple infused vinegar by steeping fresh nasturtium leaves and flowers in apple cider vinegar for two weeks. I take a teaspoon daily during cold season—it’s zesty, warming, and feels like a natural shield.
Some herbalists also use nasturtium tea for mild urinary tract support. While I haven’t tried it personally, I’ve heard great feedback from fellow gardeners who swear by it. Always consult a healthcare provider before using plants medicinally, of course.
Decorative and Creative Nasturtium Uses
Let’s not forget the beauty factor. Nasturtiums bloom in vibrant shades—crimson, gold, tangerine, even deep mahogany. I use them in cut flower arrangements, floating whole blooms in summer punch bowls, or pressing them into homemade paper.
They’re also fantastic in hanging baskets and window boxes. I’ve trained trailing varieties down stone walls, creating a waterfall of color that draws compliments from every visitor.
And here’s a fun one: I once used nasturtium petals to dye Easter eggs. Crush the flowers, mix with vinegar, and soak hard-boiled eggs for a natural, speckled finish. The kids loved it—and so did the Instagram feed.
Key Takeaways: Why Nasturtiums Belong in Every Garden
- Edible from root to bloom: Flowers, leaves, and seeds are all safe and flavorful.
- Natural pest deterrent: Use as trap crops to protect brassicas and cucurbits.
- Soil improvers: Deep roots aerate soil; chopped plants enrich compost.
- Medicinal potential: Rich in vitamin C and antimicrobial compounds.
- Visually stunning: Perfect for borders, containers, and creative crafts.
FAQ: Your Nasturtium Questions, Answered
Can I eat nasturtium seeds raw?
Yes—but they’re quite peppery and best enjoyed pickled. Raw green seed pods are edible in small amounts, but most people prefer them fermented for a milder, tangy flavor.
Do nasturtiums come back every year?
In warmer zones (8–11), they can self-seed and act as perennials. In cooler climates, treat them as annuals—though they often reseed on their own if conditions are right.
Are nasturtiums safe for pets?
Generally yes. Nasturtiums are non-toxic to dogs and cats. However, large quantities might cause mild stomach upset due to their strong flavor. Better safe than sorry—keep an eye on curious pets.
Growing Tips from My Garden to Yours
If you’re planting nasturtiums, skip the fertilizer. They actually bloom better in poor to average soil. Too rich, and you’ll get lush leaves but fewer flowers. I sow seeds directly in spring after the last frost—no need to start indoors.
Water moderately. They’re drought-tolerant once established, but consistent moisture keeps blooms coming. And don’t deadhead too aggressively—letting some flowers go to seed encourages self-sowing for next year.
For best results, plant in full sun. They’ll tolerate partial shade, but flowering drops significantly. I’ve tried growing them under dappled light—beautiful foliage, but barely any blooms.
Final Thoughts: A Plant That Gives Back
Looking back, I can’t imagine my garden without nasturtiums. They’ve saved my kale from aphids, spiced up my meals, and even brightened my mood on rainy days. More than just a pretty face, they’re a true garden ally.
If you haven’t tried growing them yet, I hope this inspires you to toss a few seeds into your next planting. Start small—maybe a single border or container—and see how they transform your space.
Thanks for reading, and happy growing! If you’ve got your own nasturtium uses or tips, I’d love to hear them. Drop a comment below or subscribe to my newsletter for more garden wisdom straight from my backyard. After all, the best advice always comes from real experience—not just textbooks.