When it comes to planting sea holly, also known as eryngiums, there are a few key factors to consider. These unique and striking plants thrive in sunny locations with well-draining soil. So, let’s dive into the specifics of where to plant eryngiums for optimal growth and beauty.
1. Sunlight: Eryngiums are sun-loving plants, so it’s essential to choose a location that receives full sun for most of the day. They need at least 6-8 hours of direct sunlight to thrive. If you have a spot in your garden that gets ample sun exposure, that would be an ideal place to plant eryngiums.
2. Soil Conditions: Eryngiums prefer soil that is well-draining and not overly rich in nutrients. They can tolerate poor soil conditions, so you don’t need to worry about providing them with highly fertile soil. In fact, too much fertility can lead to excessive foliage growth at the expense of flower production. If your soil tends to be heavy and clayey, consider adding organic matter like compost or sand to improve drainage.
3. Dry Soil: Another important factor to consider is the moisture level of the soil. Eryngiums are drought-tolerant plants and prefer soil that remains relatively dry, especially during winter. Planting them at the foot of a wall or near raised beds can help ensure the soil remains dry, as these areas tend to have better drainage. Avoid planting eryngiums in low-lying areas where water tends to collect, as this can lead to root rot and other issues.
4. Spacing: Eryngiums can grow quite large and have a sprawling habit, so it’s important to give them enough space to spread out. Planting them away from the edge of borders or paths is a good idea to prevent their sharp spikes from causing any harm. Aim for a spacing of about 18-24 inches between plants to allow for proper air circulation and growth.
In my personal experience, I have found that planting eryngiums in a sunny spot near a wall in my garden has worked exceptionally well. The soil there is well-draining, and the plants receive plenty of sunlight throughout the day. Additionally, the wall provides some protection against strong winds, which can be beneficial for eryngiums as they have delicate foliage.
To summarize, the best place to plant eryngiums, or sea holly, is in a sunny location with well-draining soil. Choose a spot that receives full sun for at least 6-8 hours a day. Plant them away from the edge of borders or paths to avoid any mishaps with their sharp spikes. Consider planting them at the foot of a wall or in raised beds to ensure the soil remains dry, especially during winter. With the right conditions, eryngiums will thrive and add a unique touch to your garden.
