Nasturtiums (Tropaeolum majus) are more than just attractive, vibrant flowers; they are also edible and can add a peppery flavor to salads and other dishes. These fast-growing annuals are perfect for Minnesota gardeners looking to add color and flavor to their gardens. In this article, we will explore the best practices for growing nasturtium in Minnesota’s unique climate, including soil preparation, planting tips, care, pest management, and harvesting.
Minnesota is known for its diverse climate, which ranges from humid continental in the north to more moderate conditions in the southern region. With cold winters and short summers, growers need to be strategic when it comes to choosing plants that thrive in these conditions. Nasturtiums are ideal for Minnesota gardeners because:
To grow nasturtium successfully, it’s essential to understand the local microclimates where you live—whether that’s the cooler northern regions or the warmer southern areas of the state.
Before getting started with your nasturtium garden, you’ll want to select the right variety. Nasturtiums come in two main types: trailing and dwarf.
These varieties spread out and can grow up to 10 feet long. They are excellent for hanging baskets or as ground cover. Some popular trailing varieties include:
Dwarf varieties are compact and typically reach about 12 inches in height. They’re well-suited for container gardening or small garden spaces. Popular dwarf varieties include:
Choosing the right variety will help you maximize your growing space and aesthetic appeal.
Nasturtiums prefer well-draining soil but can thrive in poorer soils compared to many other plants. Here’s how to prepare your soil:
Nasturtiums do not require high fertility levels, so avoid over-fertilizing as this can lead to lush foliage with fewer flowers. Incorporate a balanced fertilizer into your soil before planting if necessary, but keep it minimal.
In Minnesota, the growing season is relatively short due to the cold winters. Here’s how to time your nasturtium planting:
You can start nasturtiums indoors if you want an early start; however, direct sowing outdoors usually yields better results in Minnesota.
Nasturtium seeds can take between 7 to 14 days to germinate depending on temperature and moisture conditions. To speed up germination:
While nasturtiums are relatively drought-tolerant once established, they perform best with consistent moisture during their early growth phase. Here are some tips for watering:
Applying a layer of mulch around your nasturtiums can help retain soil moisture while also suppressing weed growth. Organic mulches such as straw or shredded leaves also contribute nutrients as they break down.
Nasturtiums are generally resistant to pests but may attract some unwanted visitors such as aphids or spider mites. Here’s how to manage potential pest problems:
Encourage beneficial insects like ladybugs or lacewings by planting nasturtiums nearby. These insects will feed on pests that might threaten your garden.
If you notice signs of infestation, consider using neem oil as an organic pesticide. Spray directly onto affected areas following package instructions.
For larger pests like caterpillars or slugs, manual removal is effective if spotted early.
To keep your nasturtiums healthy throughout the growing season:
One of the most delightful aspects of growing nasturtiums is their culinary uses. Here’s how you can harvest them:
Use scissors or sharp shears to cut leaves or flowers from the plant without damaging stems. Always wash them gently before consumption.
Nasturtium leaves add a peppery kick to salads and sandwiches while the flowers make a beautiful garnish for dishes or can be used in salads as well!
Growing nasturtium in Minnesota can be a rewarding experience that adds both beauty and flavor to your garden. By understanding local climate conditions, choosing suitable varieties, preparing your soil properly, and providing adequate care throughout their growth cycle, you can easily cultivate these stunning plants successfully. Whether you enjoy their culinary benefits or simply appreciate their vibrant colors in your landscape design, nasturtiums are sure to enhance any Minnesota garden!