How big do rouge cardinal clematis get?

Rouge Cardinal clematis, scientifically known as Clematis x jackmanii ‘Rouge Cardinal,’ is a beautiful and popular flowering vine that can add a splash of color to any garden or landscape. When it comes to the size of this particular clematis variety, it can grow to be quite substantial.

In terms of height, Rouge Cardinal clematis can reach an impressive 8 to 12 feet tall. This makes it a great choice for covering walls, fences, or trellises, as it can provide a stunning vertical element to your garden. The vines are vigorous and can quickly climb and spread, creating a lush and full appearance.

In addition to its height, Rouge Cardinal clematis can also have a substantial spread. The vines can easily reach 3 to 6 feet wide, making it important to provide adequate space for it to grow and spread out. This wide spread can create a lovely and full display of flowers, adding a touch of romance and beauty to your outdoor space.

When it comes to the flowers themselves, Rouge Cardinal clematis produces large, velvety deep red blooms that can measure up to 6 inches in diameter. These eye-catching flowers are a favorite among gardeners and can attract pollinators such as butterflies and bees.

To ensure that your Rouge Cardinal clematis reaches its full potential in terms of size and blooming, it is important to provide the right growing conditions. These clematis prefer a good quality soil with high nutrient levels, so it is essential to prepare the planting holes properly. Adding at least two forkfuls of well-rotted manure or garden compost to the soil can help improve its fertility and provide the necessary nutrients for the plant to thrive. If you don’t have access to these organic amendments, you can consider using a soil improver compost specifically designed to enhance soil quality.

In addition to soil fertility, Rouge Cardinal clematis also appreciates a soil that is moist but well-draining. This means that while it needs regular watering to keep the soil consistently moist, it should not sit in waterlogged conditions, as this can lead to root rot and other issues. Ensuring proper drainage can be achieved by adding organic matter to the soil, such as compost or well-rotted manure, which can improve the soil structure and prevent waterlogging.

Rouge Cardinal clematis can grow to be quite large, both in terms of height and spread. It is important to provide adequate space for it to grow and thrive, as well as ensuring the proper soil conditions for optimal growth. With the right care and attention, this stunning clematis variety can become a showstopper in your garden, providing a burst of color and beauty for years to come.

Photo of author

Caroline Bates

Caroline is a Miami-based landscaper who specializes in drought-tolerant landscapes. She is the mother of two young children and also enjoys writing for GreenPacks.org in her spare time. Caroline takes great pride in her work, and loves being able to share her knowledge with others through her writing.