Hypericum Tetrapterum

Description

Hypericum Tetrapterum, commonly known as the Square-Stalked St. John’s Wort, is a flowering plant belonging to the Hypericaceae family. It is native to Europe and is widely distributed across the continent. The plant is named after its square-shaped stem and its tetra-winged fruit. It is a perennial herb that can grow up to 60cm in height and 40cm in width. The plant produces yellow flowers that bloom from June to August and it can be easily grown in gardens or containers.

Taxonomic Information

Appearance

The Square-Stalked St. John’s Wort has a unique appearance, with its square-shaped stem and tetra-winged fruit. The leaves are opposite, ovate, and dark green in color, with a prominent mid-vein. The plant produces yellow flowers that are 2-3cm in diameter and have five petals. The flowers have numerous stamens that are bright yellow in color. The fruit is a capsule that splits open to release numerous small seeds. The plant is a perennial herb that can grow up to 60cm in height and 40cm in width, and it generally has a bushy appearance.

Care Guide

Hypericum Tetrapterum is a low-maintenance plant that is easy to care for. Here are some tips to help you take care of your plant:

• Water: The plant prefers moist but well-drained soil. Water the plant regularly, especially during dry spells.
• Fertilization: Fertilize the plant once a month during the growing season with a balanced fertilizer.
• Soil: The plant prefers well-drained soil that is rich in organic matter. It can tolerate a wide range of soil types.
• Sunlight: The plant prefers full sun to partial shade. It can tolerate some shade but may not flower as well.
• Hardiness Zones: The plant is hardy in USDA zones 5-8.

Common Pests & Diseases

Hypericum Tetrapterum is generally not susceptible to many pests or diseases. However, it can be affected by the following:

• Aphids: These small insects can suck the sap from the plant, causing stunted growth and yellowing leaves. Use an insecticidal soap to control them.
• Spider mites: These tiny pests can cause yellowing leaves and webbing on the plant. Use an insecticidal soap to control them.
• Botrytis blight: This fungal disease can cause brown spots on the leaves and flowers. Remove infected plant parts and treat the plant with a fungicide.
• Root rot: Overwatering or poorly-drained soil can lead to root rot. The plant may wilt, and the leaves may turn yellow. Improve drainage and reduce watering to prevent this.

Habitat

Hypericum Tetrapterum is native to Europe and can be found in a variety of habitats, including meadows, woodlands, and rocky areas. It prefers well-drained soil and can tolerate a wide range of soil types. It is a hardy plant that can grow in USDA zones 5-8.

Question and Answer

Q: Is Hypericum Tetrapterum toxic to pets?
A: Yes, the plant is toxic to pets if ingested. Keep it away from pets and children.

Q: Can Hypericum Tetrapterum be grown in containers?
A: Yes, the plant can be grown in containers as long as it has sufficient space and drainage.

Q: How often should I water my Hypericum Tetrapterum?
A: Water the plant regularly, especially during dry spells. Make sure the soil is moist but well-drained.

Q: How tall does Hypericum Tetrapterum grow?
A: The plant can grow up to 60cm in height and 40cm in width.

Related Plants

• Hypericum perforatum (Common St. John’s Wort)
• Hypericum calycinum (Rose-of-Sharon)
• Hypericum inodorum (St. John’s Wort)

References

• “Hypericum Tetrapterum (Square-Stalked St. John’s Wort).” Gardenia.net. Accessed 12 October 2021. https://www.gardenia.net/plant/hypericum-tetrapterum-square-stalked-st-john-s-wort
• “Hypericum Tetrapterum.” Missouri Botanical Garden. Accessed 12 October 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=g770
• “Hypericum Tetrapterum.” Plants for a Future. Accessed 12 October 2021. https://pfaf.org/user/Plant.aspx?LatinName=Hypericum+tetrapterum