When comparing Hoya carnosa and Hoya australis, there are a few key differences that can help you distinguish between the two. As an avid gardener and landscaping enthusiast, I have had the pleasure of growing both of these beautiful plants, and I can share my personal experiences with you.
1. Leaf Shape: One of the most noticeable differences between Hoya carnosa and Hoya australis is the shape of their leaves. While both plants have attractive foliage, the leaves of Hoya australis tend to be rounder in shape compared to the slightly more elongated leaves of Hoya carnosa. This distinction becomes more apparent as the plants mature.
2. Leaf Thickness: Another characteristic that sets these two plants apart is the thickness of their leaves. Hoya carnosa is known for its thick and waxy foliage, which gives it a glossy appearance. On the other hand, Hoya australis has slightly thinner leaves, which may not have the same waxy texture as its counterpart. When touched, the leaves of Hoya carnosa feel more substantial, while the leaves of Hoya australis are more delicate.
3. Leaf Size: While both plants have similar-sized leaves, there may be some variations in leaf size between individual specimens. Generally, the leaves of Hoya carnosa can grow larger than those of Hoya australis. However, it’s important to note that this can vary depending on the specific cultivar or growing conditions.
4. Flower Structure: Both Hoya carnosa and Hoya australis produce stunning clusters of star-shaped flowers. However, there can be slight differences in the structure and arrangement of these flowers. Hoya carnosa blooms typically have a sweet fragrance and can come in various colors such as pink, white, or red. Hoya australis, on the other hand, often has white or pale pink flowers that are less scented. Additionally, the flowers of Hoya australis may have a more open structure compared to the denser flower clusters of Hoya carnosa.
5. Growth Habit: While both plants are vines and can be trained to climb or trail, there can be variations in their growth habits. Hoya carnosa tends to have a more compact and bushy growth habit, making it suitable for hanging baskets or compact spaces. Hoya australis, on the other hand, has a more trailing habit, with long, cascading stems that can be trained to climb trellises or allowed to hang down from elevated planters.
The key differences between Hoya carnosa and Hoya australis lie in their leaf shape, thickness, size, flower structure, and growth habit. While they share some similarities, such as their vining nature and ability to produce beautiful flowers, these subtle distinctions can help you identify and appreciate each plant’s unique characteristics. As a gardener, I encourage you to explore and enjoy the beauty of both Hoya carnosa and Hoya australis in your own green spaces.
