Origin
Sullivantia ohionis Torr. & Gray ex Gray is a perennial herbaceous plant that is native to the eastern United States and Canada. It can be found growing in moist forests, along stream banks, and in other damp areas.
Common Names
Sullivantia ohionis Torr. & Gray ex Gray is commonly known as Ohio sullivantia, Ohio fameflower, and Sullivant's coolwort.
Uses
There is limited information about the traditional uses of Sullivantia ohionis Torr. & Gray ex Gray. However, some Native American tribes reportedly used the plant to treat a variety of ailments, such as headaches and stomach issues.
In contemporary gardening, Sullivantia ohionis Torr. & Gray ex Gray is often planted in woodland gardens or shade gardens. Its delicate, white or pale pink flowers and attractive foliage make it a popular choice for native plant landscaping projects as well.
General Appearance
Sullivantia ohionis Torr. & Gray ex Gray typically grows to be around 1-2 feet tall, with a spreading habit. The plant produces several stems that are smooth and tinged reddish-purple. The leaves are dark green, with a deeply lobed or toothed shape that gives them a delicate, fern-like appearance.
The Ohio sullivantia produces small, white or pale pink flowers in spring or early summer that grow on a long stem and are arranged in a loose, branching cluster. The flowers are followed by small, hard, egg-shaped fruits that remain on the plant throughout the summer and into the fall.
Overall, the Sullivantia ohionis Torr. & Gray ex Gray is a lovely native plant that can add beauty and interest to a woodland garden.
Light Requirements
Sullivantia ohionis Torr. & Gray ex Gray thrives in shaded to partially shaded areas. They can grow in full sun, but too much direct sunlight can cause leaf scorching and affect their overall growth and health. It is best to place them in locations where they receive dappled sunlight or morning sun and afternoon shade.
Temperature Requirements
The plant can tolerate a range of temperatures, but they thrive in cooler temperatures. The ideal temperature range is between 60 to 75 °F (16-24 °C). They are hardy in USDA Zones 4-9, which shows that they can tolerate a wide range of temperatures. However, they might need some extra protection during extreme weather conditions.
Soil Requirements
Sullivantia ohionis Torr. & Gray ex Gray prefers moist, well-draining soil with a neutral to slightly acidic pH level. They require soil that is rich in organic matter. Soil that is too compacted or wet can cause root rot and fungal diseases. They prefer soils that are loose, loamy, and rich in organic content. Adding organic matter and improving soil drainage can help ensure the plant thrives.
Cultivation
Sullivantia ohionis Torr. & Gray ex Gray, commonly known as Ohio sullivantia, is a perennial herbaceous plant that requires well-draining, fertile soil for optimal growth. It prefers partial shade or filtered sunlight and can tolerate a wide range of soil pH levels.
The plant can be propagated from seed or by dividing the root ball in the spring or fall. It is best to plant young plants in the growing environment to allow them to establish well. Avoid planting near aggressive plants as it can quickly get crowded out.
Watering Needs
Ohio sullivantia prefers moderately moist soil. Water when the top inch of soil feels dry to the touch. However, do not overwater as it can lead to root rot. Be cautious when watering as it prefers moist soil but not soggy soil.
During times of drought, be sure to provide supplementary watering, as it can lead to dehydration and wilting, making them susceptible to pests and diseases. Water in the morning to reduce the risk of developing fungal infections.
Fertilization
A single application of slow-release, balanced fertilizer in the spring will provide all of the nutrients it needs for a growing season. It is unnecessary to fertilize later in the season as it can lead to weak and lanky growth.
Ohio sullivantia is known for its low nutritional requirements, and overfeeding can damage the plant's roots or produce weaker plants.
Pruning
Deadheading spent flowers in the summer will help promote more blooms and keep it looking tidy. Once fall arrives, cut back any dead or yellow foliage and remove any accumulated debris.
During the growing season, it is unnecessary to prune sullivantia, but thinning out the overcrowded area will keep it looking attractive and healthy.
Additionally, any scraggly growth can be removed to tidy up the overall appearance of the plant. Plan to do any significant pruning during the dormant season in late fall or early spring, just before the growing season resumes.
Propagation of Sullivantia ohionis Torr. & Gray ex Gray
Sullivantia ohionis Torr. & Gray ex Gray, also known as Ohio saxifrage, is a native perennial herb found in eastern North America. It typically grows in shaded, moist environments such as ravines, woods, and rocky slopes. Propagating Sullivantia ohionis can be done through several methods.
Seed Propagation
Seeds can be collected from the plant in late summer and early fall. After cleaning, they should be sown in a well-draining substrate and kept moist. Germination may take several weeks to a few months, and the seedlings should be kept in a shaded location until they are large enough to transplant.
Division
Sullivantia ohionis can also be propagated through vegetative means by dividing the plant. This method is best done in early spring or late fall when the plant is dormant. The clump should be carefully dug up and divided into smaller sections, each with healthy roots and shoots. These sections should be replanted in a well-draining substrate and kept moist until established.
Cuttings
A third method of propagation is by taking stem cuttings. This method is best done in early summer when the plant is actively growing. Healthy stems with several leaves should be selected, and the bottom leaves should be removed. The cutting should be placed in a rooting hormone and planted in a well-draining substrate, kept moist, and in a shaded location until rooted.
With these various propagation methods, Sullivantia ohionis can be readily multiplied and used to enhance shaded areas and woodland gardens.
Disease Management
Sullivantia ohionis Torr. & Gray ex Gray is known for being susceptible to various diseases, including:
- Powdery Mildew: This is a fungal disease that appears as white powdery spots on the leaves and stems. It can be managed by removing any infected plant parts and spraying with a fungicide.
- Anthracnose: Another fungal disease that causes dark spots with pinkish borders on the leaves. It can be controlled with fungicides and proper sanitation practices, such as removing affected leaves and debris from around the plant.
- Root Rot: This disease is caused by soil-borne fungi, and it leads to the decay of the root system. Proper drainage and aeration can help prevent this disease.
Pest Management
Sullivantia ohionis Torr. & Gray ex Gray is also subject to various pests, including:
- Aphids: These are tiny insects that suck the sap from the leaves, causing them to curl and wilt. They can be removed by spraying the leaves with a strong stream of water or treating the plant with an insecticide.
- Spider Mites: These pests are difficult to see with the naked eye, but their presence can be identified by the fine webs they spin on the leaves and stems. They can be controlled with insecticidal soap or oils.
- Slugs and Snails: These pests can cause damage by munching on the leaves and stems. They can be controlled by using baits or traps.
Regular monitoring of the plant can help detect any signs of disease or pest infestation early, and prompt action can prevent further damage. It is advisable to use preventive measures, such as pruning, mulching, and maintaining proper hygiene, to keep the plant healthy.
