Nasturtiums are one of the most delightful and versatile plants you can grow in your garden. With their stunning flowers and edible leaves, these vibrant plants add not only color but also flavor to salads and dishes. Growing nasturtium in Oregon can be a rewarding experience, as the state’s varied climate provides the perfect backdrop for this resilient species. In this article, we will explore how to grow nasturtium successfully in Oregon, covering everything from soil preparation to pest management.
Nasturtium (Tropaeolum majus) is a flowering plant that belongs to the family Tropaeolaceae. It is native to South America and is well-known for its bright orange, yellow, and red flowers. The plant is not only ornamental but also edible, making it a fantastic addition to any garden. Both the leaves and flowers have a peppery taste, similar to arugula, and can be used in salads or as a garnish.
There are two main types of nasturtiums you may consider growing:
Choosing the right variety for your space will help ensure a successful growth experience.
Nasturtiums thrive best in full sun, requiring at least 6 hours of direct sunlight each day. However, they can also tolerate partial shade, especially in hotter regions of Oregon where summer temperatures can soar. If you live in areas with particularly warm summers, consider planting nasturtiums in locations that receive morning sun but some afternoon shade.
Nasturtiums are not picky about soil quality but do prefer well-draining soil rich in organic matter. While they can adapt to poor soils, too much fertility can lead to excessive leaf growth at the expense of flowers.
In Oregon, you can sow nasturtium seeds directly into the ground after the last frost date, which typically ranges from late April to mid-May depending on your specific location within the state. For an earlier start, you can also start seeds indoors 4-6 weeks before the last frost date.
If you started your nasturtium seeds indoors, wait until all danger of frost has passed before transplanting them outdoors. Harden off seedlings by gradually exposing them to outdoor conditions over a week before planting them in your garden bed or containers.
Nasturtiums prefer moderately moist soil but are sensitive to waterlogging. Water them thoroughly after planting and then allow the top inch of soil to dry out between watering sessions. Be careful not to let them go completely dry, especially during hot spells.
Applying a layer of mulch around your plants helps retain soil moisture while suppressing weeds. Organic mulches such as straw or shredded leaves work well while also enriching the soil as they break down.
Nasturtiums generally do not require heavy fertilization due to their adaptability to poor soils. If you decide to fertilize, use a balanced fertilizer sparingly early in the season; avoid high nitrogen fertilizers, as they promote foliage at the expense of blooms.
Despite their resilience, nasturtiums can attract certain pests:
One of the joys of growing nasturtium is being able to harvest its edible parts. You can begin harvesting leaves when they are young and tender—about 3-4 inches long—which provides an excellent peppery addition to salads or sandwiches.
Flowers can also be harvested once they bloom fully; simply pluck them off at their base. They make colorful garnishes for dishes or can be used in salads for added visual appeal.
In most regions of Oregon, nasturtiums are annuals that will die back with frost. However, if you have a particularly mild winter environment or want them to come back next year:
Growing nasturtium in Oregon presents an opportunity not only for aesthetic enhancement but also for culinary exploration within your home garden. With proper selection of variety, attention to site conditions, moderate watering practices, and effective pest management strategies, you’ll find this plant both easy to cultivate and rewarding throughout the growing season. Whether you’re looking for a stunning addition to flower beds or an edible option for your kitchen table, nasturtiums provide an excellent solution tailored perfectly for Oregon’s diverse gardening conditions. Happy gardening!