Nasturtiums are one of those rare garden plants that truly do it all. With their vibrant, cheerful blooms, peppery edible leaves and flowers, and natural ability to protect neighboring plants from pests, they earn a well-deserved spot in any garden. Whether you’re growing in containers on a patio or filling out a vegetable bed, nasturtiums deliver beauty, flavor, and function all in one easy-to-grow package. Today, you’ll learn exactly how to grow them successfully, how to use them in the kitchen, and how they can actively defend your garden.

Why Grow Nasturtiums?

Nasturtiums bring a level of versatility that few annuals can match.

First, their blooms are simply stunning. Expect warm shades of orange, red, and golden yellow that instantly brighten garden beds, borders, and containers. Their slightly wild, cottage-garden look goes along beautifully with both structured and relaxed planting styles.

Second, they are incredibly low-maintenance. Nasturtiums prefer poorer soils and minimal fuss, making them ideal for beginner gardeners or anyone who wants reliable color without constant upkeep.

Finally, they are highly adaptable. Compact dwarf varieties work well in containers and edging, while trailing and climbing types spill elegantly from hanging baskets or weave through vegetable beds. This flexibility allows you to integrate them almost anywhere in your garden design.

Growing Nasturtiums: Step-By-Step

Growing nasturtiums is straightforward, but a few best practices will ensure strong, healthy plants.

Choosing the right variety is your first step.

• Dwarf varieties are perfect for containers and borders.
• Trailing types work well in hanging baskets or spilling over raised beds.
• Climbing varieties can be trained up trellises for vertical interest.

Planting basics:
Nasturtiums are best grown from seed, as they germinate quickly and don’t always transplant well. In most U.S. regions, sow seeds directly outdoors after the last frost. Plant seeds about ½ inch deep in well-draining soil.

They thrive in full sun, though they will tolerate partial shade (with slightly reduced flowering). Avoid overly rich soil—too much fertility encourages leafy growth at the expense of blooms.

Watering and care:
Water regularly during establishment, then allow the soil to dry slightly between waterings. Once established, nasturtiums are relatively drought-tolerant. Deadheading spent flowers can encourage continuous blooming, though it’s not necessary.

Common mistakes to avoid:

• Over-fertilizing (leads to fewer flowers)
• Overwatering (can cause root issues)
• Planting too early in cold soil

Eat: Culinary Uses for Nasturtiums

Nasturtiums are not just ornamental; they’re entirely edible and surprisingly delicious.

What can you eat?

• Flowers
• Leaves
• Seed pods

All parts have a mild, peppery flavor similar to arugula, making them a standout addition to fresh dishes.

Flavor and nutrition:
Nasturtiums are rich in vitamin C and contain natural compounds with antibacterial properties. Their bold taste adds both visual appeal and a flavor kick.

Easy ways to use them:

• Toss flowers and leaves into salads for color and spice
• Use blooms as edible garnishes on appetizers or desserts
• Pickle the green seed pods to create a homemade “caper” substitute

They’re an excellent way to elevate simple dishes into something memorable, perfect for entertaining or everyday meals.

Defend: Nasturtiums as Garden Protectors

One of the most valuable roles nasturtiums play is in natural pest management.

They act as a trap crop, attracting pests like aphids, whiteflies, and squash bugs away from your vegetables. Instead of attacking your prized crops, pests are drawn to the nasturtiums.

At the same time, nasturtiums attract beneficial insects such as ladybugs and hoverflies, which help control pest populations naturally.

Companion planting tips:
Plant nasturtiums near:

• Tomatoes
• Cucumbers
• Squash
• Beans

For example, many gardeners plant nasturtiums at the edges of raised beds. Aphids often colonize the nasturtiums first, allowing beneficial insects to move in and keep the problem contained—protecting the rest of the garden.

Nasturtium Companion Planting Chart

Crop	Benefits of Planting with Nasturtiums	Placement Tip
Tomatoes	Helps deter aphids and whiteflies; attracts beneficial insects	Plant at the base or edges of tomato beds
Cucumbers	Acts as a trap crop for aphids and beetles	Let trailing types spread beneath vines
Squash & Zucchini	Distracts squash bugs and aphids	Plant nearby, but not overcrowding the main plants
Beans	Attracts pollinators and reduces pest pressure	Interplant between rows
Peppers	Helps reduce aphids and improves biodiversity	Place in containers or along garden borders
Brassicas (Cabbage, Kale, Broccoli)	Draws cabbage pests away as a trap crop	Plant a few feet away to lure pests off the main crops
Radishes	Helps deter cucumber beetles and other small pests	Mix directly into planting rows
Potatoes	May help repel certain beetles and improve overall garden health	Plant along the edges of potato beds

 

How to Use This Chart in Your Garden

• Border Strategy: Plant nasturtiums around the perimeter of raised beds to act as a first line of defense.
• Trap Crop Method: Place them slightly away from your main crops to “pull” pests toward them instead.
• Container Gardens: Pair nasturtiums with vegetables in large containers for both beauty and protection.
• Mix & Match: Don’t be afraid to interplant—nasturtiums play well with most vegetables.

Quick Tip

For best results, plant nasturtiums a week or two before your vegetables so they are established and ready to attract pests early.

Nasturtium FAQs

Will they take over my garden?
Not aggressively. While trailing varieties can spread, they are easy to manage and pull if needed. In some climates, they may self-seed lightly.

Are they safe for pets and kids?
Nasturtiums are generally considered non-toxic and safe when consumed in normal garden amounts. As with any plant, moderation is key.

Do they survive frost?
No—nasturtiums are frost-sensitive annuals. They will decline quickly after a frost, so plan to replant each spring.

Nasturtiums truly live up to their “grow, eat, defend” reputation. They offer vibrant color, culinary versatility, and practical pest control—all while being one of the easiest plants you can grow. Whether you’re a beginner gardener or an experienced grower looking to add function to your planting strategy, nasturtiums are a smart and rewarding choice.

If you’re planning your garden this season, consider pairing nasturtiums with your vegetables and tracking your results.