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Nasturtiums are plants that are frequently used as trap crops to draw squash bugs or aphids. Vegetable plants like squash and tomatoes can be repelled by nasturtium companion plants. Additionally, they draw beneficial insects like pollinators and hoverflies, which prey on common pests like aphids.
It’s often planted near pest-prone vegetables like cabbage, broccoli, and kale to draw aphids away, acting as a natural pest control. You’ll want to place it in full sun, ideally along the garden’s edges or in areas with poorer soil, as it thrives in less fertile conditions. For spacing, keep bush types about 12 inches apart and trailing varieties 18-24 inches to allow for growth.
Nasturtium not only protects your veggies but also attracts beneficial insects like bees and butterflies, aiding pollination. It’s also edible, with leaves and flowers adding a peppery kick to salads, which might surprise you if you’re used to thinking of it just as a garden helper. Consider planting it near fences or trellises for trailing types, or intermix bush types among your vegetables for a colorful, functional border.
Direct sowing after the last frost is best, as nasturtium roots don’t like transplanting. Ensure the spot gets 6-8 hours of sunlight daily, and avoid rich soil to encourage more flowers over leaves. This approach keeps your garden thriving and visually appealing, making nasturtium a must-have companion.
Nasturtium, a vibrant and versatile annual plant originating from South and Central America, is increasingly popular in vegetable gardens for its multifaceted benefits. Known for its showy, colorful flowers and distinctive, lotus-like leaves, nasturtium serves as more than just an ornamental addition—it’s a powerhouse for pest control, pollination support, and even culinary use. This survey note explores where to plant nasturtium in your vegetable garden, diving into its characteristics, benefits, and practical placement strategies to ensure a thriving, balanced garden ecosystem.
Nasturtium, scientifically part of the Tropaeolum genus, is celebrated for its ease of growth and adaptability. It’s particularly valued in vegetable gardens for its ability to act as a trap crop, drawing pests like aphids away from valuable vegetables such as cabbage, broccoli, and kale. This natural pest control method reduces reliance on chemical pesticides, fostering a healthier garden environment. Additionally, it attracts beneficial insects like bees, butterflies, and hummingbirds, enhancing pollination for your vegetable crops.
What might surprise many gardeners is that nasturtium is entirely edible. The leaves, flowers, and immature seedpods offer a peppery, mustard-like flavor, making them perfect for salads, sandwiches, or as garnishes. They’re also rich in vitamin C, adding nutritional value to your garden’s yield. This dual role as both a functional and edible plant makes nasturtium a unique addition, blending beauty with utility.
Nasturtium comes in two main types: bush (Tropaeolum minus) and trailing or climbing (Tropaeolum majus), each suited to different garden needs. Bush types, with their compact growth, are ideal for smaller spaces, containers, or as fillers among vegetables. Examples include ‘Tom Thumb’ and ‘Baby Boomer,’ which are perfect for tight spots or raised beds. Trailing or climbing varieties, like ‘Alaska’ and ‘Jewel of Africa,’ spread extensively and are excellent for fences, trellises, or as ground cover, adding vertical interest or covering bare soil.
When choosing, consider your garden’s space and purpose. If pest control is your priority, place them near vegetables they protect, such as beans, cucumbers, or melons, as research suggests they’re particularly effective companions for these crops. For aesthetics, select varieties that complement your garden’s color scheme, enhancing visual appeal while serving functional roles.
Nasturtium thrives in full sun, requiring at least 6-8 hours of direct sunlight daily for optimal growth and flowering. It can tolerate some shade, especially in hotter climates, but may produce fewer blooms. Soil-wise, it prefers well-drained, poor to average conditions, with a slightly acidic to neutral pH (6.0-7.0). Interestingly, rich, fertile soil can lead to lush foliage at the expense of flowers, so it’s best to avoid over-fertilizing.
This preference for poorer soil can be a challenge in vegetable gardens, which often have enriched, compost-rich beds. To reconcile this, consider planting nasturtium in less fertile areas, such as garden edges or corners, where it can thrive without competing with vegetables for nutrients. Alternatively, you can plant it in containers with specifically prepared, less rich soil, ensuring it gets the conditions it loves while staying integrated in your garden layout.
Where you plant nasturtium can make or break its effectiveness. Here are key strategies, backed by gardening insights:
Proper spacing ensures nasturtium grows without crowding other plants. For bush types, space plants 12 inches apart, allowing enough room for their compact growth. Trailing types need more space, with 18-24 inches recommended, giving them room to spread or climb without tangling with vegetables.
Planting depth is crucial—sow seeds about ½ inch deep, as deeper planting can hinder germination. Direct sowing is preferred, as nasturtium’s fibrous root system is sensitive to transplanting, potentially causing stress. If starting indoors, use biodegradable pots to minimize root disturbance, and transplant after the last frost, when soil temperatures reach 55°F to 65°F. Timing is key; in warmer climates, you can sow earlier, but ensure frost risk is past to protect young seedlings.
Maintaining nasturtium is straightforward, aligning with its reputation as a low-maintenance plant. Water regularly to keep the soil moist but not waterlogged, as it’s somewhat drought-tolerant yet benefits from consistent moisture for robust blooms. Avoid overwatering, as soggy conditions can lead to root rot.
Fertilizing is generally unnecessary and can be counterproductive. Rich soil leads to excessive leaf growth, reducing flowers, so skip the fertilizer unless your soil is extremely poor. If needed, a light application of balanced fertilizer can help, but less is more. Pruning is simple—pinch off spent flowers to encourage continuous blooming, and trim back trailing types if they become too sprawling, keeping them tidy and productive. Mulching around the plants conserves moisture and suppresses weeds, making maintenance easier.
Harvesting nasturtium is a joy, especially knowing you’re adding flavor to your meals. Pick young leaves for the best taste, using them in salads, sandwiches, or as a lettuce substitute. Flowers, when fully open, make stunning garnishes, adding a peppery kick and vibrant color to dishes. Immature seedpods can be pickled, serving as a caper substitute, perfect for adding zest to recipes.
Store leaves and flowers fresh in the refrigerator for a few days, or dry them for tea or as a spice, extending their utility. A little-known tip: harvest frequently to encourage more growth, as nasturtium responds well to regular picking, ensuring a steady supply for your kitchen. I once added nasturtium flowers to a salad, and the peppery bite was a hit at dinner, surprising guests with its flavor.
While nasturtium helps control pests, it can still face challenges. Aphids, ironically, may overwhelm it, but a strong spray of water or introducing ladybugs can manage them effectively. Fungal diseases can occur if the plant stays too wet, so ensure good air circulation and remove infected parts promptly. Slugs and snails might nibble on leaves, but handpicking or organic controls like diatomaceous earth can keep them at bay, maintaining plant health.
Planting nasturtium in your vegetable garden is a strategic choice, leveraging its pest control, pollination support, and edible benefits. Place it near pest-prone vegetables like cabbage and broccoli, along garden edges, or in poor soil areas, ensuring full sun and proper spacing. By understanding its needs and integrating it thoughtfully, you’ll enhance your garden’s productivity and enjoyment, making nasturtium a must-have companion.
This comprehensive approach, backed by gardening insights, ensures you get the most out of this versatile plant, from protecting your veggies to adding flavor to your plate.
