Contents
Description
Silphium Radula Var. Gracile is a stunning plant that belongs to the Asteraceae family. It is native to North America and is also known as the Compass Plant. This plant has a unique characteristic of orienting its leaves in a north-south direction. It can grow up to a height of 5-8 feet and has a spread of 2-3 feet. Silphium Radula Var. Gracile produces yellow flowers that bloom in the summer months. This plant is perfect for home gardens and landscaping.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Silphium |
Appearance
The leaves of Silphium Radula Var. Gracile are deeply lobed and can be up to 2 feet long. The leaf margins are serrated, and the leaf surface is covered with fine hairs. The stem of the plant is sturdy and can be hairy or smooth. The flowers of this plant are yellow and bloom in the summer months. Silphium Radula Var. Gracile can grow up to a height of 5-8 feet and has a spread of 2-3 feet. This plant adds a unique texture to gardens and landscapes.
Care Guide
Silphium Radula Var. Gracile requires well-drained soil and full sun exposure for optimal growth. This plant is drought-tolerant and can survive in hardiness zones 4-9. It is best to water the plant deeply once a week during the growing season. Fertilize the plant once a month during the growing season with a balanced fertilizer. Silphium Radula Var. Gracile can tolerate poor soil but prefers soil with a pH of 6.0-7.5.
Common Pests & Diseases
Silphium Radula Var. Gracile is generally free from pests and diseases. However, it can be susceptible to powdery mildew, rust, and leaf spots. Proper care and maintenance can prevent these diseases. If the plant is infected, remove the affected leaves and apply a fungicide.
Habitat
Silphium Radula Var. Gracile is native to North America and can be found in the prairies, savannas, and open woodlands. It grows well in well-drained soil and full sun exposure. This plant is a perfect addition to home gardens and landscaping.
Question and Answer
Q: Can Silphium Radula Var. Gracile tolerate drought?
A: Yes, this plant is drought-tolerant and can survive in hardiness zones 4-9.
Q: What is the best time to fertilize Silphium Radula Var. Gracile?
A: It is best to fertilize this plant once a month during the growing season with a balanced fertilizer.
Q: What are the common diseases that affect Silphium Radula Var. Gracile?
A: This plant can be susceptible to powdery mildew, rust, and leaf spots.
Q: How tall can Silphium Radula Var. Gracile grow?
A: This plant can grow up to a height of 5-8 feet.
Related Plants
- Silphium laciniatum
- Silphium integrifolium
- Silphium terebinthinaceum
- Silphium perfoliatum
References
- https://www.gardeningknowhow.com/ornamental/flowers/silphium-plant/growing-silphium-plants.htm
- https://www.wildflower.org/plants/result.php?id_plant=SIRA3
- https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277844&isprofile=1&basic=silphium
