Divergent sunflower offers various varieties such as Variety A, known for its compact size and vibrant yellow petals. Variety B stands out with its tall stature and dark center. Variety C boasts a unique branching pattern and pale yellow blooms. When selecting seeds, opt for plump, firm ones without signs of damage. For seedlings, choose those with sturdy stems and healthy leaves. Ensure the roots are well-developed and not root-bound. It is essential to select varieties, seeds, and seedlings that align with your gardening goals and preferences.
Divergent sunflower
- Scientific name
- Helianthus divaricatus
Basic Information
- Asteraceae Family Helianthus Genus Divergent sunflower Species
- Asteraceae > Helianthus > Helianthus divaricatus
- 83%
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- Forb/herb
- Perennial
- Height
- 100cm ~ 150cm
- Flower Color
- Leaf Color
- Anthesis
- summer, fall
- Sunlight Exposure
Full Sun Long hours of sunlight from morning to afternoon Partial Shade A location in the shade of a tree or where either the morning or afternoon is shaded Full Shade A place where there is no direct sunlight
- Full Sun
- Hardiness Zones
This is an indicator to know to which zone each plant can winter. Knowing the zone of each plant gives you an idea of the cold temperature resistance when grown in the ground without a roof. 2: -42.7 to -40.0 3: -39.9 to -34.4 4: -34.3 to -28.9 5: -28.8 to -23.3 6: -23.2 to -17.8 7: -17.7 to -12.2 8: -12.1 to -6.7 9: -6.6 to -1.1 10: -1.0 to 4.4 11: 4.5 to 10.0
- 4-8
- Cold resistance
- Good
- Heat resistance
- Fair
- Habitat of origin
- United States
- Growth Rate
- Normal
What is Divergent sunflower (Helianthus divaricatus)?
What is Divergent sunflower (Helianthus divaricatus)
Flower meaning
Divergent sunflower, scientifically known as Helianthus divaricatus, is a perennial plant native to North America. It is characterized by its slender, branching stems that can reach heights of up to 5 feet. The leaves are opposite, lance-shaped, and rough to the touch. The flowers of Helianthus divaricatus are bright yellow with a dark center, resembling a typical sunflower. They bloom in late summer to early fall, attracting pollinators like bees and butterflies. This plant is well-suited for naturalizing in woodland gardens or along borders due to its spreading habit. Helianthus divaricatus produces small, black seeds that are enjoyed by birds. It is relatively easy to grow, thriving in well-drained soil and partial shade. This species is valued for its ability to add a pop of color to shaded areas and its low maintenance requirements.
Calendar of Divergent sunflower (Helianthus divaricatus)
Calendar
Divergent sunflower is susceptible to various pests and diseases, including aphids, powdery mildew, and downy mildew. Aphids are small insects that feed on plant sap, causing yellowing and distortion of leaves. Powdery mildew appears as a white powdery substance on leaves, inhibiting photosynthesis. Downy mildew causes yellow spots on leaves, leading to premature leaf drop. To prevent aphids, introducing natural predators like ladybugs can help control their population. Regularly inspecting plants for signs of powdery mildew and downy mildew and promptly removing infected leaves can prevent the spread of these diseases. Withering in Divergent sunflower can be caused by a combination of factors, including insufficient water, poor soil quality, or root rot due to overwatering.
How to grow Divergent sunflower (Helianthus divaricatus)
Watering
The flower language commonly used in America for the Divergent sunflower is: - Adoration - Loyalty - Longevity One typical example is "Adoration," symbolizing deep love and admiration. This flower language is often associated with the Divergent sunflower due to its vibrant appearance and the way it turns its face towards the sun, representing adoration and devotion.
Soil and Fertilizer
Divergent sunflowers thrive in full sun exposure, requiring at least 6-8 hours of direct sunlight daily. They exhibit excellent heat tolerance, preferring temperatures between 70-85°F. Cold tolerance is limited, with temperatures below 50°F potentially causing damage. To overwinter, Divergent sunflowers should be planted in well-draining soil and mulched to protect roots from freezing. Optimum temperature for growth ranges from 60-75°F. These plants should be placed in areas with good air circulation to prevent diseases. They are best suited for regions with long, sunny days. Divergent sunflowers are known for their strength in sunlight, but excessive heat can lead to wilting. It is recommended to provide shade during the hottest part of the day.
Sunlight and Place
For the Divergent sunflower, watering frequency should be every 3-4 days during the growing season. This plant thrives in well-draining soil, so ensure the soil is moist but not waterlogged. During the dormant season, reduce watering to once every 10-14 days to prevent root rot. Monitor soil humidity by inserting a finger 1-2 inches into the soil; if it feels dry, it's time to water. Water in the morning to allow excess moisture to evaporate during the day, reducing the risk of fungal diseases. Avoid overhead watering to prevent water from sitting on the leaves, which can lead to mildew.
Advanced Information of Divergent sunflower (Helianthus divaricatus)
Pruning
Divergent sunflower thrives in well-drained soil with a pH level between 6.0 and 7.5. It requires a nutrient-rich soil with high organic matter content for optimal growth. Fertilizers rich in nitrogen, phosphorus, and potassium are beneficial for Divergent sunflower. Application of a balanced fertilizer with an N-P-K ratio of 10-10-10 or similar is recommended during the early growth stages. During the flowering stage, a fertilizer with a higher phosphorus content can promote blooming. Fertilizers should be applied according to the manufacturer's instructions, typically every 4-6 weeks during the growing season. Regular soil testing can help determine the specific nutrient requirements of Divergent sunflower and adjust fertilizer applications accordingly.
Planting and Harvest
Divergent sunflower benefits from regular pruning to maintain its shape, promote new growth, and enhance flowering. Pruning is best done in late winter or early spring before new growth emerges. Remove dead or damaged branches, cutting them back to healthy growth nodes. Additionally, prune any crossing or overcrowded branches to improve air circulation and prevent disease. After pruning, clean your tools with a disinfectant to avoid spreading infections. Dispose of the pruned material properly to prevent the spread of pests and diseases. Regular pruning will help keep your Divergent sunflower healthy and vibrant.
Propagation
Divergent sunflower thrives best when potted due to its adaptability to various soil types and its manageable size. To pot this plant, choose a container with drainage holes, fill it with well-draining soil, and plant the sunflower at the same depth as its current container. Water thoroughly after planting and place in a location with full sun exposure. Repotting should be done every 2-3 years or when the plant outgrows its current pot. When repotting, gently remove the plant from its current container, loosen the roots, and place it in a slightly larger pot with fresh soil.
Pests and Diseases
Divergent sunflower can be propagated through seeds, division, and cuttings. Seeds are sown in well-draining soil, kept moist, and placed in a sunny location. Division involves separating the plant into smaller sections with roots attached, ensuring each division has sufficient roots and shoots. Cuttings are taken from healthy stems, dipped in rooting hormone, and placed in a growing medium until roots develop. To maximize propagation success, utilize a combination of methods to increase the number of new plants. Harvest seeds when mature, divide plants in early spring, and take cuttings in the growing season for optimal results.
Habitat of Divergent sunflower (Helianthus divaricatus)
Habitat
Toxicity of Divergent sunflower (Helianthus divaricatus)
Health Benefits
- edible
- Inedible
- Toxic
- No toxicity
NO DATA
Toxic for dogs and cats
NO DATA