You can definitely grow ornamental kale from seed. It’s a great way to add color and texture to your garden or landscape. The first thing to keep in mind is that ornamental kale seeds require light for germination, so it’s important not to cover them with soil when planting.
To get started, you’ll want to sow your seeds about 6-10 weeks before the first frost. This will give them enough time to germinate and establish themselves before the colder temperatures set in. If you’re unsure of when the first frost will occur in your area, you can check with your local agricultural extension office or use online resources to get an estimate.
When sowing the seeds, you can either start them indoors or directly sow them in the garden. If starting indoors, fill seed trays or pots with a good quality seed starting mix. Moisten the mix before sowing the seeds to ensure good contact between the seeds and the soil.
Sprinkle the seeds evenly over the surface of the soil, making sure not to overcrowd them. Gently press the seeds into the soil, but avoid burying them too deep. Remember, they need light to germinate, so a light dusting of soil or vermiculite on top is sufficient.
Once the seeds are planted, mist the soil with water to keep it moist. It’s important to keep the soil consistently moist throughout the germination process, but be careful not to overwater as this can lead to fungal diseases.
Place the seed trays or pots in a warm location with plenty of light. A sunny window or a grow light are both good options. The ideal temperature for germination is around 70-75°F (21-24°C). It usually takes about 7-14 days for the seeds to germinate, but this can vary depending on the conditions.
As the seedlings emerge, make sure they are getting enough light. If they start to stretch or become leggy, it’s a sign that they need more light. You may need to adjust the position of your grow lights or move the seedlings closer to a window.
Once the seedlings have developed their first set of true leaves, they can be transplanted into individual pots or into the garden. If transplanting into the garden, make sure to space the plants about 12-18 inches apart to allow for proper air circulation and growth.
Ornamental kale plants prefer full sun to part shade and well-draining soil. They can tolerate some heat, but they thrive in cool weather. Until it gets cool, the plants won’t have much color. However, as the temperatures drop, the leaves will start to develop their vibrant colors, ranging from deep purples to pinks and whites.
To keep your ornamental kale plants healthy and looking their best, make sure to water them regularly, especially during dry periods. Mulching around the plants can help retain moisture and suppress weed growth. Additionally, a balanced fertilizer can be applied every few weeks to provide the plants with the nutrients they need.
Ornamental kale can also be combined with warm-season annuals for a beautiful foliar contrast. The bold, textured leaves of the kale can provide a striking backdrop for vibrant annual flowers such as marigolds, petunias, or zinnias. This combination can add visual interest and enhance the overall beauty of your garden or landscape.
Growing ornamental kale from seed is a rewarding and relatively easy process. By following the right planting and care techniques, you can enjoy the stunning colors and foliage that ornamental kale brings to your garden or landscape. So why not give it a try and add a touch of beauty to your outdoor space?
