Nasturtiums, with their vibrant blooms and peppery leaves, are a delightful addition to any garden. These annuals are not only stunning but also versatile, serving as both ornamental plants and edible companions for various dishes. If you’re in Massachusetts and looking to add nasturtiums to your garden, this guide will provide you with all the necessary information to grow them successfully.
Nasturtium (Tropaeolum majus) is a flowering plant that belongs to the family Tropaeolaceae. Native to South America, these plants thrive in a variety of climates, including the temperate zones of Massachusetts. Their flowers come in shades of red, orange, and yellow, while their leaves have a distinctive round shape. Beyond their beauty, nasturtiums are valued for their culinary uses; they can be added to salads or used as garnishes due to their peppery flavor.
Before planting nasturtiums in Massachusetts, it’s essential to select the right variety based on your garden’s conditions and your aesthetic preferences. Here are some popular varieties:
Climate: Massachusetts has a varied climate, with warm summers and cold winters. Nasturtiums thrive in well-draining soil and prefer full sun but can tolerate partial shade.
Garden Space: Depending on the variety you choose, consider your available space. Climbing nasturtiums need vertical space, while dwarf varieties can fit in smaller areas or containers.
Culinary Use: If you plan to use nasturtiums in your cooking, opt for organic seeds to ensure they are free from harmful pesticides.
The best time to plant nasturtiums in Massachusetts is during the spring after the last frost date. Typically, this falls between late April and early May.
Nasturtiums can be started indoors or sown directly into the garden:
Starting Indoors: For an earlier bloom, start seeds indoors about 4-6 weeks before the last frost date. Use peat pots or seed trays filled with seed-starting mix. Keep them in a warm location with plenty of light until it’s time to transplant them outside.
Direct Sowing: If you prefer a more straightforward approach, sow seeds directly into well-prepared soil once the danger of frost has passed. Make sure the soil temperature is consistently above 60°F for optimal germination.
Nasturtiums thrive in well-drained soil with a pH level between 6.0 and 7.0. Here’s how to prepare your garden bed:
Choose a Location: Select a spot that receives full sunlight (at least 6 hours per day). While nasturtiums can tolerate partial shade, they produce fewer flowers under lower light conditions.
Clear the Area: Remove any weeds or debris from the chosen area to prevent competition for nutrients.
Amend the Soil: Incorporate organic matter such as compost into the soil to enhance its fertility and drainage capabilities.
Seed Depth: Plant seeds about ½ inch deep and space them approximately 10-12 inches apart if you’re planting multiple seeds.
Watering: Water the area thoroughly after planting but avoid overwatering; nasturtiums prefer slightly dry conditions once established.
Once your nasturtiums are planted, regular care will help them flourish throughout the growing season.
Water nasturtiums regularly but allow the soil to dry out between waterings. Overly wet soil can lead to root rot and other fungal diseases.
Nasturtiums do not require much fertilization; excessive nutrients can lead to leafy growth at the expense of flowers. A light application of a balanced organic fertilizer during planting is usually sufficient.
While nasturtiums are generally resistant to pests due to their peppery taste, they can sometimes attract aphids or caterpillars:
Aphids: If you notice aphids on your plants, spray them off with a strong stream of water or introduce beneficial insects like ladybugs.
Caterpillars: Handpick any visible caterpillars or use an organic insecticidal soap if infestations become severe.
One of the benefits of growing nasturtiums is their edible nature. You can harvest both leaves and flowers once they have reached maturity:
Leaves: Select young leaves for a milder flavor and use them fresh in salads or sandwiches.
Flowers: Harvest flowers when they are fully open; they make excellent garnishes or additions to salads.
If you’re not using your harvested leaves and flowers immediately, store them in a sealed container in the refrigerator for up to a week.
In Massachusetts, nasturtiums are typically grown as annuals due to cold winters; however, you can collect seeds from mature plants before the first frost hits:
Seed Saving: Allow some flowers to go to seed and collect them when they turn brown and dry on the plant.
Storage: Store seeds in a cool, dry place until you’re ready to plant them next spring.
Growing nasturtiums in Massachusetts can be an enjoyable and rewarding experience that adds beauty and flavor to your garden and kitchen alike. With minimal care requirements and versatility as both ornamental and culinary plants, these vibrant flowers are perfect for gardeners of all skill levels.
By following this guide on planting, caring for, harvesting, and overwintering nasturtiums, you’ll not only cultivate an eye-catching garden but also enrich your culinary repertoire with fresh ingredients straight from your backyard!